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Case notes on veterinary investigations in sheep, cattle and other species


ALPHABETICAL LIST OF DISEASE ENTITIES

A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

3D Syndrome

 

Review of cases submitted to investigate the cause of cattle deaths in western New South Wales (so called 3D syndrome) | April 2015
Written by: Graham Bailey and Erika Bunker
A syndrome with the key signs of drooling and diarrhoea leading to death has been reported by graziers with combined losses across all properties where 3D syndrome has been investigated in the hundreds ... Read more


Abomasal emptying defect

 

Abomasal emptying defect of sheep | March 2012
Written by: Colin Peake and Patrick Staples
Abomasal emptying defect is an idiopathic syndrome of abomasal distension and impaction described in Suffolk and Hampshire sheep primarily ... Read More


Abomasal ulceration

 

Abomasal ulceration | September 2011
Written by: Andrew Biddle
For a number of years, calves around 3 months of age had been dying suddenly with the only sign prior to death being bloating ... Read more


Abortion

 

A case of abortion in cattle due to infection by Salmonella chester | September 2011
Written by: Andrew Biddle
For a number of years, calves around 3 months of age had been dying suddenly with the only sign prior to death being bloating ... Read more

 

Actinobacillus seminus as a cause of abortion in an Australian sheep flock | October 2014
Written by: Bruce Watt and Helen Peam
The owner of a mob of 150 mixed age first cross ewes reported that 2-3 weeks prior to lambing, seven ewes aborted or produced stillborn premature lambs ... Read More

 

Brucella ovis as cause of abortion | Posted March 2016
Written by: Rahul Shankar and Jillian Kelly
A producer noticed several aborted fetuses about his lambing paddock, stocked with 3-4 year old ewes. ... Read More

 

Campylobacter abortion in sheep | Posted April 2017
Written by: Rahul Shankar
Making a definitive diagnosis of campylobacter abortion can often prove difficult as animal health staff are often told about the issues at a time when testing is not worthwhile when owners notice abortions/perinatal deaths but only began investigation around marking or weaning time ... Read More

 

Coliform abortion in a heifer | December 2011
Written by: Bruce Watt
An 8kg foetus was aborted from one of a mob of 28 Hereford cross heifers ... Read more

 

Drought lot Listeria abortions and some unexpected other diseases | March 2012
Written by: Tony Morton
A series of drought years had degraded the lucerne based pastures on a property north of Wagga Wagga. As a result the sheep enterprise relied on stubbles for summer feed and drought lots in late autumn utilising pea and canola pit silage and grain ... Read More

 

Listeria ivanovii abortion in sheep associated with decaying plant matter | December 2011
Written by: Tanya Rajkumar, Katie Boulton, Elizabeth Braddon and Ian Masters, Helen McGregor, Michael Hornitzky and Bruce Watt
Within the Listeria genus, Listeria monocytogenes and Listeria ivanovii are the most important pathogenic organisms in animals, with sheep being more susceptible to infection than cattle ... Read More

 

Salmonella abortion in dairy cattle | August 2010
Written by: Andrew Thompson
A full laboratory rundown on an abortion storm in a dairy herd ... Read more

 

Yersinia enterocolitica abortion in a doe | September 2012
Written by: Ian Poe and Bruce Watt
In sheep, Y enterocolitica caused a severe generalised bacterial infection of the foetus. The following report is of a case of placentitis and abortion in a maiden Boer doe ... Read more

 

Yersinia enterocolitica abortion in ewes | September 2012
Written by: Bruce Watt
In early August 2010, the owner of a mob of 180 mature Merino White Suffolk ewes noticed five dead premature foetuses and two live premature lambs ... Read More


Acorn calf

 

Acorn calf syndrome | August 2007
Written by: Chloe Hawthorne
A producer finds a dead calf that looks more bulldog than calf ... Read more

 

Acorn calves in Southeastern Australia | August 2010
Written by: Brigit Pitman
Acorn calves display a clinical syndrome of skeletal abnormalities, with a domed head ... Read more


Actinobacillosis

 

Actinobacillosis in dairy heifers | July 2012
Written by: Eliz Braddon
Many dairy owners and dairy practitioners are aware of wooden tongue as a problem from time to time in individual cattle. This case outlines the coming together of a number of factors to result in an ‘outbreak’ of wooden tongue ... Read more

 

Two “Outbreaks” of Actinobacillosis in beef cattle | September 2015
Written by: Megan Davies, DV Narrabri
Actinobacillosis, or Wooden Tongue is not an uncommon condition in cattle, but is generally seen sporadically in individual animals. It does not spread readily unless predisposing environmental conditions cause a high incidence of oral lacerations ... Read More


Anaemia

 

A case of Mycoplasma ovis | March 2015
Written by: Linda Searle
M. ovisis a bacterial infection which may not cause any clinical signs but when numbers are large enough it leads to massive destruction of erythrocytes and subsequently anaemia and jaundice ... Read More

 

Anaemia caused by theileriosis | July 2012
Written by: Ted Irwin
Benign theileriosis has been causing increasing occurrences of disease on the coast and inland in NSW. It is a protozoal organism spread by ticks that parasitises the blood cells leading to anaemia in cattle. ... Read more

 

Bovine anaemia caused by Theileria orientalis group | September 2012
Written by: Andrew Biddle
In March 2012 significant losses were incurred on two neighbouring properties as a result of infection with Theileria orientalis ... Read more

 

Mycoplasma ovis in north western NSW | July 2012
Written by: Libby Read
Mycoplasma ovis (formerly Eperythrozoon ovis) causes the disease known as eperythrozoonosis in sheep flocks throughout Australia ... Read More


Animal Welfare

 

Animal welfare case and lice offences | March 2012
Written by: A G Morton
After 35 years it still amazes me how long (10 years in this case) neighbours will tolerate welfare or stock disease problems before bringing the issue to anyone’s attention ... Read more

    

Animal welfare in developing countries | Posted April 2017
Written by: Nigel Brown
This presentation is based on my own experiences having worked as a veterinarian in about 36 different countries, primarily those are in the Middle East and North Africa but I have recently worked in Mongolia for five years ... Read more

                 

Australian wildlife health network | March 2012
Written by: T. Grillo and G. Curran
The Australian Wildlife Health Network (AWHN) links, informs and supports people and organisations who deal with wildlife disease, and work or have an interest in wildlife health across Australia ... Read more

 

Bobby calf welfare at Bega saleyards | March 2012
Written by: Ian Lugton and Camellia Leong
Bobby calves, mostly males under 2 weeks of age, are often considered to be low-value products of the dairy industry. Bega has the only saleyard on the far south coast selling bobbies ... Read more

   

Can livestock animal welfare reform come fast enough? | March 2012
Written by: Glenys Oogjes
Animals Australia is a non-profit charitable organisation financed through community support. It is a federation of 40 groups, and also has a large individual membership and supporter base. We have representation on all major state and national animal welfare committees ... Read more

    

Developments in animal welfare | April 2013
Written by: Amanda Paul
A number of issues have arisen in the last 12 months that have raised questions around the participation of LHPA vets in animal welfare. The first is the Crown Solicitor’s advice regarding functions of LHPAs ... Read more

    

DPI NSW perspective on animal welfare issues | March 2012
Written by: Amanda Paul
Animal welfare is an issue that generates significant media interest and also generates a significant amount of Ministerial correspondence in NSW ... Read more

  

Ethics of grazing livestock—a brief overview | June 2015
Written by: Bruce Watt
While those who consider that animals have similar rights to people will always regard livestock production as unethical, those of most other philosophical persuasions can accommodate grazing livestock provided welfare is guaranteed ... Read More

 

‘Failure to feed’ RSPCA welfare case: lessons | March 2012
Written by: Shaun Slattery
In 2007 the then Narrabri RLPB was requested by the RSPCA to provide advice in a ‘failure to feed’ case. This was the start of RSPCA enforcement and legal proceedings that continued for four years ... Read more

 

Feral goats in peri-urban settings, a health and welfare issue | July 2012
Written by: Linda Dillenbeck and Matt Ball
The form of agriculture practiced in the peri-urban environment can have biosecurity, welfare and food safety concerns. This case study provides an example of a disease investigation where goats were being used ... Read more

    

Moral status of animals: Comparing deontological and consequentialist view on livestock farming | June 2015
Written by: Elizabeth Watt
In this paper, I will discuss the status of animals according to two overarching philosophical theories: deontological ethics and consequentialism. I will outline the views of two classical theorists from both schools of thought ... Read More

    

New compulsory animal welfare standards | March 2012
Written by: Dr Kevin de Witte
The development of the Australian Animal Welfare Standards and Guidelines for land transport of livestock, cattle and sheep represents a significant collaboration between governments, the industry councils and animal welfare non-government organisations ... Read more

 

Welfare revolution of topical anaesthesia on wool sheep farms in Australia: is there a place for zylazine and / or NSAIDs ? | March 2012
Written by: Peter Windsor, Crystal Espinoza and Sabrina Lomax
Mulesing of Australian Merino lambs with the ‘skin wrinkle’ phenotypes, provides effective life-long protection against the risk of ‘breech strike’ caused by Lucilia cuprina, the sheep blowfly. It is estimated that at least 2million sheep would die annually of flystrike if mulesing were banned ... Read More


Anthrax

  

Anthrax outbreak at Bourke | March 2011
Written by: Brian Hodge
Anthrax occurs in a belt of country which extends from a line between Albury and Tocumwal on the Murray River, northwards through Narrandera, Condobolin, Nyngan and Bourke ... Read more

  

How to host an anthrax incident | March 2011
Written by: Dan Salmon
Anthrax is not uncommon in parts of the Riverina, in an area between Deniliquin and Jerilderie half of the properties have had at least one animal diagnosed with anthrax during the past 40 years ... Read more

  

Relevance of historical anthrax data in current property risk assessments | August 2015
Written by: Barbara Moloney and Dan Salmon
Very early reports of anthrax cases can be found in the Sydney Morning Herald (1851) and the Department of Mines Annual Reports going back to at least 1886 ... Read more


Aortic rupture

 

Aortic rupture (spontaneous) in Dorper ewes | July 2013
Written by: Bill Johnson
Spontaneous rupture of a major blood vessel is an uncommon cause of sudden death in grazing livestock. This report describes two sheep in a flock which died suddenly on the same day ... Read More


Arborival disease

 

Arboviral Disease in Horses | September 2011
Written by: Sara Biasutti
As of February 2011 an increase in muscle soreness, joint pain and neurological disease was reported in NSW horses ... Read more


Arthritis

 

Arthritis in sheep | August 2010
Written by: Bruce Watt
Infectious arthritis is a common problem in young Australian sheep and ... Read More

 

Erysipelas arthritis in crossbred ewes | August 2007
Written by: Bruce Watt
A case of poor performance in a ewes flock that culminated in severe arthritis and ... Read More

 

Post-mulesing arthritis | March 2012
Written by: Greg Curran
About a week after mulesing, flockowners saw lambs with large swollen joints, were lame and found it difficult to move, feed and water ... Read More


Ataxia

 

Enzootic ataxia | March 2011
Written by: Judy Ellem
A staggering syndrome with deaths occurred in a flock of cross-bred ewes and lambs on the western edge of the Warrumbungle Mountains ... Read more

 

Neurogenetic progressive ataxia in merino sheep: segmental axonopathy and cerebellar abiotrophy | March 2011
Written by: Bruce Watt, Mandi Carr, Zoe Spiers and Kaiser Dawood
Studies conducted in the mid 1980s on progressive ataxia in Merino sheep identified two distinct clinical and pathological syndromes ... Read More


Avian influenza

 

HPAI Young 2013 – Lessons Learned from an Emergency Response | August 2015
Written by: Eliz Braddon
Australia has an obligation to respond to any outbreak of avian influenza (AI). That response is dependent on the viral subtype diagnosed ... Read more


A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | ↑ Top

Bacteraemia

 

Coliform bacteraemia, with meningitis and other sequelae, in a neonatal beef calf | December 2016
Written by: Ian Poe
The calf was noted to initially have a depressed appearance and difficulty standing, later it began to display opisthotonus before becoming recumbent and dying ... Read more


Balanitis

 

Ulcerative balanitis in rams – ‘An enigmatic disease of unknown aetiology’ | November 2016
Written by: Bruce Watt and Petrea Wait and Shaun Slattery
Balanitis or balanoposthitis is occasionally encountered, especially in young rams, usually associated with joining ... Read More


Beef measles

 

Beef measles, should we bother about looking for it in Australian abattoirs? | August 2015
Written by: David J Jenkins
Cysticercus bovis or beef measles in the bovine intermediate host manifests as small, blister-like cystic lesions about 5-10mm in length occurring most commonly in cardiac, tongue, diaphragm and/or masseter musculature, but muscles throughout the body may be ... Read more


Besnoitiosis

 

Bovine besnoitiosis, an emerging disease | April 2013
Written by: Bruce Watt
Bovine besnoitiosis (elephant skin disease) is a costly endemic disease in the Middle East, Asia, tropical and subtropical Africa and is also emerging as a significant problem in Europe ... Read more


Blackleg

 

Review of known knowledge about blackleg in the Tweed-Lismore region of NSW | December 2012
Written by: Lydia Poad and Matt Ball
Eighty seven laboratory reports were found in archives covering the period between 1968 and 2012. Forty seven of these reports were consistent with the case definition for blackleg ... Read more


Blackleg

 

Blackleg causing acute myocarditis in a Hereford cross calf | Decemer 2012
Written by: Bruce Watt and Steven Hum
Blackleg commonly kills unvaccinated cattle between 3 months and two years of age, usually commencing in skeletal muscles but occasionally the heart or diaphragm is affected ... Read more

 

Blackleg in calves west of the Blue Mountains in NSW | December 2012
Written by: Bruce Watt, Kim Bensch and Michelle Monaghan
Blackleg is a common cause of death on the coast of NSW but is rarely diagnosed west of the mountains ... Read more

 

Blackleg in cattle: a retrospective | March 2011
Written by: Keith Hart
Blackleg is a gangrenous myositis caused by the bacterium Clostridium chauvoei, which is commonly found in the soil and in the gut contents of normal cattle ... Read more


Bloat

 

Bloat in cattle on grazing oats and wheaten hay | August 2008
Written by: Bruce Watt
Bloat has been estimated to cost 47 million dollars per year. In August 2007, deaths on grazing oats led to an investigation... Read more

 

Bloat on faba beans in weaned lambs | Posted: October 2010
Written by: Gabe Morrice
A trail of faba beans to get the lambs into the yards, followed by a big drink of water leads to losses ... Read More

 

Frothy bloat in lactating merino ewes | October 2014
Written by: Nik Cronin
and Rahul Shankar, District Veterinarian Young, Riverina Local land Services

In April a producer reported losing lactating ewes on a fresh lucerne paddock, six ewes out of 450 over a few days ... Read More

 

Frothy bloat in sheep | October 2010
Written by: Ian Masters and Bruce Watt
This report details two cases, one confirmed by autopsy ... Read More

 

Bluetongue virus

  

Bluetongue viruses - the current situation in Australia and beyond | April 2013
Written by: Peter Kirkland
The most recent large scale epizootic with a high morbidity and mortality occurred on a number of the Mediterranean Islands and later in most of the countries bordering the northern Mediterranean coast between 1999 and 2002 ... Read more


Bone problems

 

Bone problems in lambs on grazing cereals | August 2008
Written by: Bruce Watt
Lambs are reported to develop skeletal problems due to calcium deficiency, internal parasitism, copper deficiency... Read More


Botulism

 

A case of botulism in a dairy herd | March 2015
Written by: Helen Schaefer
This case demonstrates the challenge it can be to diagnose a disease which has limited diagnostic aids, particularly when it does not present as classically recognised ... Read more

 

Botulism causing high mortality in a small beef herd| December 2016
Written by: Nigel Gillan
Botulism is a disease caused by toxins produced by the anaerobic bacterium Clostridium botulinum, and is characterised by progressive, flaccid paralysis and in some situations morbidity and mortality may be high ... Read more


Bovine enzootic haematuria

 

Bovine enzootic haematuria with multiple neoplasms in a mature angus cow | December 2016
Written by: Amy Masters and Pat Shearer
Bracken fern causes two distinct diseases in cattle: an acute haemorrhagic syndrome associated with leukopaenia, thrombocytopaenia and anaemia; and a syndrome of multiple urinary bladder tumours known as bovine enzootic haematuria ... Read more


Bovine heritable arthrogryposis multiplex congenita

 

Bovine heritable arthrogryposis multiplex congenita (BHAMC) | August 2009
Written by: DJ Gardiner
A number of cases of arthrogryposis are investigated in the Mudgee / Merriwa district ... Read more


Bovine johnes disease

 

Bovine Johnes Disease - Case report | August 2008
Written by: Phil Kemsley
A report into the nature of spread of Bovine Johnes Disease in a coastal dairy environment ... Read more

 

Bovine Johnes Disease ELISA FAQ | August 2010
Written by: Steven Hum
The ELISA test employed by EMAI, how it works and what the results mean ... Read more

 

BJD in a Market Assurance Program (MAP) herd (1) |Posted December 2011
Written by: Matt Ball
In September 2011 BJD was diagnosed by a private veterinarian in a single cow in a North Coast dairy herd that was enrolled in the Market Assurance Program (MAP) for BJD ... Read more

 

BJD in a Market Assurance Program (MAP) herd (2) |Posted September 2012
Written by: Matt Ball
For at least 15 years the herd has been closed having entered the Market Assurance Program (MAP) and was assigned a herd status of MN1 in 1998 ... Read more

 

BJD in Spanish dairy farms: A case report | July 2013
Written by: Marta Ramis, Monica Espada and Delia Lacasta
One Holstein cow from a dairy farm near the Veterinary Faculty of Zaragoza was referred to the Ruminant Clinical Services. Signs of clinical BJD were observed when the affected cow developed a profuse liquid diarrhoea ... Read more

 

Eradication of bovine johne’s disease using risk assessments | August 2015
Written by: Gabrielle Morrice
Following a positive reaction in a steer sold to an export feedlot, four co-owned properties were investigated for the presence of BJD. The properties were well separated ... Read more

 

Eradication of johne’s disease from a beef herd | June 2015
Written by: Dan Salmon
The long incubation period of Mycobacterium avium spp paratuberculosis, the causative agent of bovine Johne’s disease (BJD) during which time none of the available tests have any predictive value makes eradication of established disease from grazing beef herds almost impossible ... Read more


Bovine respiratory disease complex

 

Bovine respiratory disease outbreak in selenium deficient cattle in NSW | March 2011
Written by: Erin Davis and Dave Gardiner
At weaning time May 2009, while mustering a mob of 49 cows and 24 calves, the owner discovered one dead cow and calf with advanced decomposition. Many cattle in the mob were coughing ... Read more

 

Multiple agents causing respiratory disease and mortality in grass fed steers | October 2014
Written by: Alexandra Stephens
These two cases of Bovine Respiratory Disease Complex were seen in grass fed steers on good quality and quantity pastures and water with no crowding or inclement weather ... Read more

 

Unusual bovine respiratory disease outbreak | March 2011
Written by: Ian Lugton, Paul Hick and Peter Kirkland
Bovine respiratory disease (BRD) is the most important cause of morbidity and reduced production in intensively managed cattle. This complex is multifactorial in its aetiology ... Read more


Bovine spongiform encephalopathy

 

Mad cow disease in hindsight: Lessons learnt about disease control programs - A short literature review | March 2015
Written by: Dermot McNerney
BSE (Bovine Spongiform Encephalopathy, "Mad Cow Disease") was first reported in November 1986 in the United Kingdom and was thought at that time to be similar to Scrapie in sheep and goats ... Read more


Bovine vibriosis

 

Bovine vibriosis (campylobacteriosis) causing mid term abortions in a beef herd | June 2015
Written by: Belinda Edmonstone
Vibriosis causes serious economic loss in beef herds through reproduction wastage. An investigation conducted from 1992-94 showed that 46% of cases of infertility in cattle in NSW was caused by vibriosis ... Read more


Bovine viral diarrhoea virus

 

Bovine viral diarrhoea virus – potential for control and eradication in Australia | Posted April 2017
Written by: Kate Sawford and Genevieve Hannaford
In Australia, BVDV is endemic throughout the cattle population with greater than 80% of herds surveyed showing some level of exposure to the pathogen ... Read more

 

Bovine Viral Diarrhoea Virus - The economic impacts | August 2007
Written by: Mike Healy, Genevieve Chin and Ian Lugton
An analysis of all the impacts of the introduction of BVDV into a dairy herd ... Read more

 

‘Dummy’ calves - a BVDV syndrome | September 2011
Written by: Matt Ball and Adrian Philbey
The North Coast of NSW can be prone to arboviral disease in calves that are born from dams that originated from out of the region ... Read more

 

Pestivirus (BVDV) economics and management options for NSW beef herds | March 2015
Written by: Alex Stephens
This paper describes various economic models that show the cost of pestivirus management to be worthwhile. It then discusses the various control methods being recommended in the field and aims to present a methodical approach to recommendations ... Read more

 

Pestivirus prevalence and management in the Central Tablelands | August 2008
Written by: Bruce Watt
80-90% of herds show evidence of pestivirus exposure. In surveys in 2006 and 2008, all herds had evidence ... Read more


Brucellosis

 

Emerging zoonotic issues with leptospirosis & brucellosis | April 2013
Written by: Peter D Massey
There are more than 40 zoonotic diseases currently recognised of public health significance in NSW (Adamson et al, 2011). People with a zoonotic illness frequently present with non-specific symptoms so under-diagnosis may occur ... Read more

     

Introducing Brucella melitensis | Posted March 2016
Written by: Bruce Watt
Worldwide, brucellosis remains a major source of disease in humans and domesticated animals. In humans, ovine/caprine brucellosis caused by B. melitensis is by far the most important clinically apparent disease ... Read more

 

Surveillance of swine brucellosis and leptospria spp. in feral pigs (Sus scrofa) and the potential risks to humans and livestock in northern NSW, Australia | April 2013
Written by: Camila Ridoutt, Amanda Lee, David Jordan, Barbara Moloney and Peter Massey
Swine brucellosis exposure in humans follows occupational and recreational activities such as feral pig hunting or laboratory work as well as food borne infections from inadequately cooked feral pig meat ... Read more


Burns

 

Clinical observations on teat and udder damage to beef cattle after the Ournie-Tooma fire of 17th December 2009 | March 2011
Written by: Brigit Pitman and David Hall
On December 17th 2009 two grass fires caused extensive damage to property and livestock in the Hume LHPA. A Section 44 was declared for both fires and Emergency Operation Centres were opened ... Read more


A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | ↑ Top

Calf diptheria

 

Calf diptheria in Hereford calves | December 2011
Written by: Bruce Watt
Two calves approximately 2 months old in a mob of 25 Hereford cows with calves at foot were noticed to be sick ... Read more


Calicivirus

 

Calicivirus in farmed rabbits | July 2012
Written by: Phillip Kemsley
A large vertically integrated rabbit farm on the north coast of NSW experienced heavy losses of over 1,000 growers and breeders ... Read more


Campylobacteriosis

 

Bovine vibriosis (campylobacteriosis) causing mid term abortions in a beef herd | June 2015
Written by: Belinda Edmonstone
Vibriosis causes serious economic loss in beef herds through reproduction wastage. An investigation conducted from 1992-94 showed that 46% of cases of infertility in cattle in NSW was caused by vibriosis ... Read more


Carcinoma

 

Hepatic carcinoma as a cause of chronic weight loss and diarrhoea in a murray grey cow | May 2014
Written by: Bruce Watt and Rod Reece
Cases of chronic weight loss and diarrhoea of individual cows warrant investigation, in part because the differential diagnosis includes bovine Johne’s disease and other diseases of herd significance such as internal parasitism and fasciolosis. In this case the cow was found to be suffering from a hepatic carcinoma. ... Read more

 

Intestinal adenocarcinoma in an emaciated first cross ewe | March 2015
Written by: Patrick Shearer and Bruce Watt
Intestinal adenocarcinoma is a common tumour of older sheep. Most are discovered at slaughter as incidental findings; if clinical signs are present, weight loss and occasionally ascites are usually the only findings ... Read more


Cardiac abscess

 

Illthrift due to cardiac abscess | March 2012
Written by: Andrew Biddle
A 3 year old cow with sudden onset of weight loss was presented for examination. Testing indicated that pestivirus was not the likely cause ... Read more


Cardiomyopathy

 

Cardiomyopathy in an Angus heifer | December 2012
Written by: Bruce Watt and Steven Hum
The heifer, examined on 20 November 2012 was bright, alert and responsive and while in moderate body condition was judged to be about 80 kg lighter than her cohort ... Read more


Cattle tick

 

Entry and establishment of QLD Cattle tick to the North Coast of NSW through saleyard purchasing: a risk analysis for an uncertain future | July 2012
Written by: Matt Ball and Paul Freeman
Cattle tick and associated tick fever are significant diseases in Australia. Both QLD and NSW Governments have had a long and complex history of cattle tick control policies ... Read more


Chlamydia

 

An apparently new syndrome of chlamydia infection of cattle in the southern Riverina | April 2013
Written by: David Petersen, Dan Salmon and Matthew Petersen
Historically infection by Chlamydia spp has been a relatively infrequent diagnosis in the southern Riverina. When it has been diagnosed it has been seen as a sporadic infection of young cattle ... Read more

 

Chlamydial infection in sheep | March 2011
Written by: Bruce Watt
Chlamydia pecorum is a well know cause of polyarthritis in lambs especially rapidly growing weaned prime and British breed lambs. However, C. pecorum is implicated in keratoconjuctivitis ... Read more

        

Chlamydial infections of humans and animals - an update | March 2011
Written by: Adam Polkinghorne
Chlamydia are highly successful pathogens that can infect and cause disease in animals at nearly every level of taxonomy. In humans, chlamydial infections are the leading cause of preventable blindness ... Read more

 

Chlamydia serological study in a commercial sheep flock | Posted March 2016
Written by: Evelyn Walker and Assoc. Prof. Adam Polkinghorne
In sheep Chlamydia pecorum is mainly associated with keratoconjunctivitis and polyarthritis but also implicated in respiratory disease, abortions and enteritis ... Read More

 
 

Review of the records of chlamydia and SBE diagnoses in the Wagga Wagga RLPB | March 2011
Written by: Tony Morton, Megan McGrice and Joss Hoogstraten
There were 27 sheep investigations recorded with 11,505 sheep at risk, 516 sheep affected (includes deaths) and 44 deaths ... Read more

 
 

Sporadic bovine encephalitis and ovine chlamydiosis in the Narrabri district | March 2011
Written by: Shaun Slattery
These records contain sixteen reports of ovine chlamydiosis and thirty of sporadic bovine encephalomyelitis (SBE). On endemic properties ... Read more


Classical epitheliogenesis imperfecta

 

Classical epitheliogenesis imperfecta in a new born calf | January 2014
Written by: Robert Templeton
Classical epitheliogenesis imperfecta is a congenital condition characterised by failure of development of the skin and/or mucous membranes. It is not compatible with life ... Read more


Classical swine fever

 

Classical swine fever virus in Eastern Indonesia and Timor-Leste | March 2015
Written by: Kate Sawford
Many of the pig diseases exotic to Australia are spreading in neighbouring countries representing a threat to Australia’s pork industry as pig products from these regions could be imported illegally and fed to pigs ... Read more


Coccidiosis

 

Coccidiosis in a Commercial Layer Flock | September 2011
Written by: Eliz Braddon
A commercial layer operation experienced a sudden increase in mortalities in one layer shed with deaths occurring in birds in the bottom two rows of cages only ... Read more

 

Coccidiosis infection in merino lambs post weaning | July 2012
Written by: Steve Eastwood
In March 2012 a stud/commercial Merino operation experienced scouring in a mob of commercial Merino lambs ... Read More


Conjunctivitis

 

Branhamella ovis and Chlamydia pecorum isolated from a case of conjunctivitis (with some polyarthritis) in lambs | April 2013
Written by: Evelyn Walker
The eye lesions consisted of bilateral conjunctivitis, an ocular discharge ranging from clear to yellow, yellow crusts, and swollen conjunctivial membranes with or without hyperaemia ... Read More


Colitis typhlitis

 

Colitis typhlitis in weaned lambs | August 2007
Written by: Dan Salmon
Investigates two incidents of haemorrhagic enteritis following transport of weaned lambs over long distances ... Read More

 

Weaner sheep colitis of uncertain aetiology: a case study | Posted April 2017
Written by: Scott Ison, Erika Bunker and Jim Walsh
This case report describes an investigation of seasonal weaner colitis in a self-replacing fine wool merino flock with an apparent failure of, or resistance to, antibiotic treatment ... Read More


A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | ↑ Top

Dermatitis

 

Dermatitis in angus heifer weaners and angus cows grazed on mixed vetch pastures | August 2015
Written by: Colin Peake, Suzie Richards and Joanne Ward
Vetch is a plant that has often been sown in pastures for its high nutritional value and legume properties or between cropping rotations. It is likely that vetch toxicosis occurs sporadically ... Read more

 

Dorsal skin lesions after ram shearing in far northwest: a complex aetiology | March 2012
Written by: Greg Curran
While testing for ovine brucellosis in two ram flocks in Far Northwestern NSW in December 2011, a high prevalence of back lesions was observed. The lesions varied from severe to trace, with some rams not affected. The lesions involved loss of wool and skin, with some crusting ... Read More


Dermatophilosis

 

Dermatophilosis in weaner cattle | April 2011
Written by: Libby Read
Skin lesions were noticed on 4 of 63 calves at weaning of a group of Shorthorn calves following a particularly wet summer and abundant pasture growth ... Read more

 

High prevalence mild dermatophilosis (lumpy wool) in unweaned merino lambs following a wet spring | Posted August 2017
Written by: Will Berry and Bruce Watt
Dermatophilosis in sheep (lumpy wool) is a dermatitis caused by the bacterium Dermatophilus congolensis, but can affect a range of animal species including horses, cattle, goats and humans ... Read More


Developmental abnormalities

 

A sporadic chondrodysplasia of unknown aetiology in lambs | April 2013
Written by: Bruce Watt
This paper describes a sporadic chondrodysplasia in lambs. In the experience of the author, this disorder (or disorders) occurs at low prevalence across a wide area central NSW and it not associated with the presence of plants of the Trachymene genus ... Read More

 

Brachygnathia, cardiomegaly and renal hypoplasia syndrome in poll merino lambs | August 2010
Written by: Peter Windsor
A poll merino breeder reports episodic freak lambs with a poor survival rate ... Read More

 

Dermatosparaxis in a white dorper flock | March 2012
Written by: Jillian Kelly
Dermatosparaxis is an inherited connective tissue disorder that results in the deposition of abnormal collagen in the skin, leading to the skin losing its strength, and becoming fragile ... Read More

 

Developmental duplications (DD) in Angus calves | 4 December 2013
Written by: Laurence Denholm and Lisa Martin
Angus Australia, the American Angus Association and Angus breed societies in other countries have declared DD to be a recognized genetic condition in the Angus breed. The DD allele is transmitted in Angus and Angus infused breeds (Brangus, Black Simmental, etc) ... Read more

 

Polymenia (supernumerary limbs) in Angus calves | December 2011
Written by: Dr Laurence Denholm, Lisa Martin and Andrew Denman
Whilst sporadic cases of polymelia in cattle have been reported all around the world in both Bos taurus and Bos indicus breeds, in recent years the incidence of this congenital defect seems to be increasing in Angus calves in Australia ... Read more

 

Possible Arboviral Disease in Sheep | September 2011
Written by: Matt Ball
A farmer near Grafton reported lambs being born in the winter of 2011 with twisted necks, a syndrome had also been seen the previous year on both his property and on the neighbour’s property ... Read More

 

Spongy degeneration in the brain of an Angus calf | August 2010
Written by: Christina Kwan
A calf showing recumbency and depression has diffuse vacuolation of the brain ... Read more

 

Staggers in medium wool merinos | February 2015
Written by: Dr Cecily Moore
The occurrence of staggers in lambs in a medium wool merino flock was investigated with initial histopathological findings of the central nervous system consistent with a diagnosis of degenerative thoracic myelopathy ... Read More


Devil Facial Tumour

 

Devil facial tumour disease | March 2011
Written by: Benn Bryant
Devil Facial Tumour Disease (DFTD) was first recognised in free ranging Tasmanian devils (Sarcophilus harrisii) in the north-east of Tasmania in 1997. The disease subsequently spread and now ... Read more


Diarrhoea

 

Diarrhoea in calves: advances in research and diagnosis | March 2012
Written by: Andrew Thompson, Peter Kirkland, John House, Paul Sheehy and Alison Gunn
Neonatal calf diarrhoea (NCD) is a common problem in Australian beef and dairy enterprises. The disease epidemiology is complex and traditionally diagnosis is difficult ... Read more

 

Risk of diarrhoea in calves due to Cryptosporidium being transmitted to humans | March 2012
Written by: Belinda Walker, Bob McKinnon, Ross Kemp, Keith Eastwood, David Durrheim, Peter Massey, Philippe Porigneaux, Josephine Ng and Una Ryan
Cryptosporidia are protozoan parasites capable of causing diarrhoea in a very wide range of animals. Usually different species or strains of Cryptosporidia affect different species of animals, but there is some overlap ... Read more


Diptheria

 

Calf diptheria in Hereford calves | December 2011
Written by: Bruce Watt
Two calves approximately 2 months old in a mob of 25 Hereford cows with calves at foot were noticed to be sick ... Read more


Diseases of alpacas

 

Diseases of alpacas | Posted March 2016
Written by: Patrick Staples, State Veterinary Diagnostic Laboratory, EMAI, Menangle
This paper attempts to provide an introduction and overview of some of the diseases of alpacas that may be seen in Australia ... Read more


Diseases of bats

   

Emerging infectious diseases of bats | March 2012
Written by: Rod Reece
Approximately two thirds of the well-recognised diseases of humans are zoonoses; however, many of the high profile and significant new and emerging human diseases of recent years have derived from animals ... Read more


Drench resistance

 

Anthelmintic resistance survey in the Central West LHPA | April 2013
Written by: Evelyn Walker, Neil Charman, Jillian Kelly, and Susan McClure
Internal parasites are ranked the highest costing disease in the Australian sheep industry followed by flystrike, lice, and post weaning mortality ... Read More

 

Drench resistance on the northern tablelands | April 2013
Written by: Andrew Biddle
Resistance to anhelminthics is not a new phenomenon and starts the very first time a drench is used. In fact, the only way not to select for drench resistance in sheep is not to drench them at all ... Read More

 

Drench resistance survey - Lachlan LHPA | March 2012
Written by: Eliz Braddon
Within the Lachlan LHPA there is increasing concern, real or perceived, amongst ratepayers that the highly expensive anthelmintics they are using are failing to adequately control these parasites ... Read More

 

Lachlan drench resistance trial | April 2013
Written by: Elizabeth Braddon
In September 2011, the Lachlan LHPA undertook a targeted surveillance project to assess the drench resistance profile of our commonly used drenches against the three sheep internal parasite pathogens ... Read More


Dummy calf

 

‘Dummy’ calves - a BVDV syndrome | September 2011
Written by: Matt Ball and Adrian Philbey
The North Coast of NSW can be prone to arboviral disease in calves that are born from dams that originated from out of the region ... Read more


Dystocia

 

Dystocia in maiden Dorper ewes | September 2011
Written by: Derek Lunau
Dystocia is a common problem in lambing ewes. A definition of dystocia is lambing which takes more than one hour after rupture of the foetal membranes ... Read More


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Endemic salmonellosis

 

Endemic salmonellosis | September 2012
Written by: Matt Ball
A 3 month old calf was examined and found to be dehydrated, febrile and weak with rectal straining passing of stands of mucous. This calf had been treated with three daily doses ... Read more


Enteric disease

 

Monitoring the prevalence and impact of enteric disease in pigs | March 2015
Written by: Alison Collins
While histopathology is the gold standard in diagnosis for many enteric diseases, only very sick pigs are necropsied, so mild clinical and sub-clinical disease are often undiagnosed ... Read more


Enzootic bovine leucosis

 

Eradication of enzootic bovine leucosis in national dairy herd | April 2013
Written by: Dr Diane Ryan
In the mid-1990s, a scheme to eradicate Enzootic Bovine Leucosis (EBL) infection from Australia’s dairy herds began as voluntary State based programs. A National Dairy Enzootic Bovine Leucosis Eradication Program (NDEBLEP) was established in 2008 ... Read more


Epididymitis

 

Histophilus somni epididymitis in Dorper rams | March 2011
Written by: Dermot McNerney
A producer telephoned to advise that some rams had swollen scrotums. It was unclear for how long they had swollen scrotums but the affected rams appeared to have ... Read more


Epizootic haemorrhagic disease

 

Epizootic haemorrhagic disease - is this a disease of alpacas? | January 2014
Written by: Zoe Feigen, Diane Ryan and Bruce Watt
Epizootic Haemorrhagic Disease is viral disease, primarily of ruminants. Overseas, it causes severe disease in cervids and is associated with mild disease in cattle and bighorn sheep and carrier states in domestic sheep, goats and other wild ungulates ... Read more


Exotic diseases

   

Foreign fevers – Rift Valley fever, East Coast fever and classical swine fever | Posted April 2017
Written by: Nigel Brown
Rift Valley fever (RVF), East Coast fever (ECF) and classical swine fever (CSF) are three diseases with differing epidemiology and disease attributes which might be introduced into Australia ... Read more

 

Rabies preparedness and response in Northern Australia | Posted April 2017
Written by: Professor Michael Ward
A state-transition disease spread model has been developed and parameterized. Individual dogs are the unit of interest; at any point in time they can exist in only one of four mutually exclusive states ... Read more


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Facial eczema

 

Facial eczema in cattle - FMD excluded | December 2011
Written by: Kylie Greentree
This case study outlines a disease investigation that was in response to a farmer contacting the Emergency Disease hotline. The syndrome reported by the farmer could have been consistent with an exotic disease ... Read more

  

Facial eczema in the Bega Valley | Posted April 2017
Written by: Helen Schaefer
Facial eczema is a disorder mainly of sheep and cattle primarily involving liver damage, though is most often recognized as a form of photosensitisation affecting a number of the flock or herd at once ... Read more


Fasciolosis

 

Chronic fasciolosis with aberrant mature fluke | April 2013
Written by: Bruce Watt and Patrick Staples
Over the past three months, two of five mature White Suffolk rams died after losing weight. Most of the cohorts had also lost weight and appeared lethargic. They had grazed low-lying wet paddocks during joining in the summer ... Read More

 

Fascioliasis and severe worm burdens in young calves | May 2012
Written by: Jack Neville-Towle and Matthew Ball
In early February 2012, a beef producer contacted the Lismore District Veterinarian about a severely pale calf, concerned that the calf had contracted a congenital disease ... Read more


Fog fever

 

‘Fog Fever’ in a Limousin bull | May 2007
Written by: Bruce Watt
Dyspnoea and exercise intolerance following consumption of cabbages ... Read more


Foot abscess

 

Foot abscess in merino ewes and first cross lambs | July 2012
Written by: Toni Jericho and Shaun Slattery
Wet weather and flooding in late summer-autumn resulted in a number of reports of foot abscess in the western parts of the North West LHPA ... Read More

 

Within flock prevalence of non-footrot lesions in sheep and the impact of pre-lambing iodine supplementation on the expression of foot abscess | July 2012
Written by: Bruce Watt and Jeff Eppleston
Foot abscess (heel abscess, infectious bulbar necrosis, digital suppuration) is a necrotic then suppurative condition of the ovine foot predisposed by water maceration or other interdigital skin damage followed by a synergistic infection with ... Read More


Foot and mouth disease

 

EU FMD real time training - Nepal | April 2013
Written by: Andrew Biddle and Libby Guest
The experiences of each individual involved in EU FMD Real-time Training in Nepal are dependent on the village and enterprises they visited. A few of the practical lessons learned in Nepal are outlined ... Read more

  

FMD control in the Mekong region using village-based approaches to vaccination and biosecurity | March 2012
Written by: Peter Windsor
There has been dramatic progress in addressing poverty in southern Asia in recent years (FAO, 2009) although the region still contains the highest prevalence of underweight people in the world ... Read more

  

FMD eradication dreaming | April 2013
Written by: Peter Windsor
From a global perspective, FMD is more correctly considered a failure of the food security system affecting over 20million cattle and 4million pigs per annum, severely compromises international trade in animals and animal products, causes considerable financial losses ... Read more

  

Foot and mouth disease in Kenya: an overview of key features | March 2012
Written by: Paul Freeman
Foot and mouth Disease is a highly contagious disease of cloven footed animals. It is economically significant affecting both production and trade access ... Read more

   

Foot and mouth disease: A diagnostic challenge? | March 2015
Written by: Steve Eastwood
FMD is often described in context of the typical clinical presentation in pigs and cattle. What is less recognised is that presentation in sheep can be varied and often difficult to diagnose in the field ... Read more

    

Role of vaccination in foot and mouth (FMD) control | April 2013
Written by: Therese Wright
As vaccinated animals are less likely to be infected and, if they are infected can be expected to shed less virus, vaccination can be used to minimise spread of disease particularly in areas at high risk of rapid transmission or in an outbreak ... Read more


Footrot

 

Footrot: Past, present and future | March 2015
Written by: Dan Salmon
The Footrot Strategic Plan was relatively unique in the fact that there was very little government money involved in the actual program and there were no incentives of compensation schemes for the producers, all things that the textbooks proclaim are essential for successful disease control programs ... Read More


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Genetics

    

Genetics testing advances for livestock | March 2012
Written by: Brendon O’Rourke
Technical advances are facilitating the application of molecular genetics to enhance productivity in the livestock industries. This is being served by two pathways ... Read more


Glassers disease

 

Glasser’s Disease in Pigs | August 2010
Written by: Belinda Edmonstone
A purchase of 26 weaner pigs goes wrong when the count of the dead reaches nine ... Read more

 

Glasser’s disease (Haemophilus parasuis) in weaners | December 2012
Written by: Lydia Poad and Matt Ball
Four weaners that had been purchased became acutely lame and unable to stand two weeks after arrival. One of these weaners was found dead two days later ... Read more


Goitre

 

Goitre in lambs | March 2011
Written by: Ian Masters
A Poll Dorset stud reported unusually high lamb mortalities in a mob lambing down in May/June, 2010. About 25% of his lambs had been born dead or died soon after birth ... Read more


Grain engorgement

 

Grain engorgement in weaner lambs | May 2007
Written by: Eliz Braddon
Sudden death in weaner lambs with one animal with intriguing respiratory grunts ... Read More

 

Grain overload and polioencephalomalacia in Dorper cross lambs | September 2011
Written by: Andrew Biddle
Six lambs were found dead in the paddock and a visit was scheduled for the following morning when 4 more animals had to be picked up while mustering ... Read More

 

Grain poisoning in merino ewes on wheat stubble | August 2009
Written by: Katherine Marsh
Losses in ewes on wheat stubble with no apparent grain spills was investigated... Read More

 

Grain poisoning treated with virginiamycin and ad lib sodium bicarbonate | August 2009
Written by: Tony Morton
In the face of high mortality in sheep provided access to a paddock with grain spills ... Read More


Grass seed infestation

 

Grass seed infestation of ear of lambs with penetration through the auditory meatus | June 2011
Written by: Dan Salmon
Grass seed penetration is a significant problem of domestic animals with the barbed awns of many native and introduced grass species penetrating the ears ... Read More


Grass tetany

 

Grass tetany (hypomagnesaemia) in beef cattle: a selective review | March 2012
Written by: Bill Johnson
Grass tetany (hypomagnesaemia) kills more adult beef cows than any other disease in south-eastern Australia (Champness 2007). Sackett et al (2006) considered grass tetany the fourth most significant disease affecting southern beef production ... Read more


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Haemochromatosis

 

Haemochromatosis in two mobs of sheep | August 2010
Written by: Gabrielle Morrice
Two properties reported weight loss, lethargy and listlessness on a good diet ... Read More


Haemonchosis

 

Possible haemonchosis in camels | August 2007
Written by: FJA Neilson
Signs of anemia and high faecal egg counts ... Read more


Hendra virus

 

Epidemiology of 2011 hendra virus spillover events: Queensland perspective and general overview | March 2012
Written by: Nina Kung and Hume Field
Periodic spillover of Hendra virus (HeV) from its natural host (fruit bats, flying-foxes) results in catastrophic disease in horses and occasionally the subsequent infection of humans ... Read more

 

Hendra risk management and preclinical animals | March 2012
Written by: Therese Wright
Understanding the potential risks of viral shedding posed by animals that may be infected with Hendra virus but are not showing clinical signs allows these animals to be appropriately managed ... Read more

 

Hendra virus case studies | September 2011
Written by: Matt Ball
In 2011 the North Coast of NSW has had multiple properties diagnosed with Hendra virus with the last known occurrence of the disease in NSW in 2006 ... Read more

 

Hendra virus developments 2012 | April 2013
Written by: Therese Wright
In 2012, 12 horses died of Hendra virus in 9 incidents. All these incidents were confined to Queensland and all occurred on properties north of Gladstone ... Read more

 

Hendra virus experiences - 1 | March 2012
Written by: Ian Poe
Hendra virus was first isolated in Queensland following an outbreak at a racing stable in Hendra, Brisbane. Prior to 2011 there had been 14 incidents in Queensland and a single case in NSW ... Read more

 

Hendra virus experiences - 2 | March 2012
Written by: Matt Ball
During the winter of 2011 the North Coast of NSW had multiple properties diagnosed with Hendra virus (7 Infected Premises) and an unprecedented number of Hendra exclusions (over 60) ... Read more

 

Hendra virus experiences - 3 | March 2012
Written by: Phillip Kemsley
This case report reviews experiences with Hendra Virus disease in horses on an affected property at Wollongbar in June / July 2011. It also explores flying fox movements and weather events at the suspected time of virus spillover ... Read more

 

Hendra virus policy update | August 2015
Written by: Paul Freeman
The introduction of a Hendra virus vaccine, confirmation of infection in a second dog and recent developments in the understanding of recrudescent HeV infection have necessitated review of the management of vaccinated animals on infected premises, the risk posed by close contact companion animals and the policy of mandatory euthanasia of infected animals ... Read more

 

Hendra virus update | March 2012
Written by: Deborah Finlaison
This presentation will review the history of Hendra virus outbreaks, give an overview of the characteristics of the virus, and discuss the diagnostic tests for identification of Hendra virus infection and the samples that should be collected for exclusion testing ... Read more

 

Interesting Hendra virus exclusion | March 2011
Written by: Ian Poe
Over the last few years Hendra virus exclusions have become a regular occurrence for local private veterinarians and District Veterinarians working in the Mid Coast Livestock Health and Pest Authority ... Read more


Henipavirus

  

Henipavirus outbreak in the southern Philippines, 2014 | Posted March 2016
Written by: Debbie Eagles
This paper describes the investigation of an outbreak of neurological disease with high case fatality amongst people and horses in southern Philippines in 2014 ... Read more


Histophilosis

 

Histophilosis cases in the North West LHPA | March 2011
Written by: Libby Read and Shaun Slattery
Histophilosis is a bacterial disease of cattle found worldwide. It presents with clinical syndromes that include pneumonia, meningoencephalitis, myocarditis and arthritis ... Read more

 

Histophilus in feeder cattle | March 2012
Written by: Phillip Kemsley
In the week prior to the first property visit, three calves presented with fever (>41oC), marked respiratory distress, an oral white stable frothy discharge and malaena ... Read more

 

Investigating risk factors for two histophilus outbreaks in grass-fed cattle | April 2013
Written by: Bill Johnson
Histophilus somni caused significant mortalities in a pasture-based cattle enterprise on the Southern Tablelands during winter 2012. The same property experienced further losses in summer 2012-2013. Potential risk factors associated with the two outbreaks were compared in an attempt to prevent future losses ... Read more


Human metapneumovirus

 

Human metapneumovirus: zoonosis or reverse zoonosis? | March 2012
Written by: Jim McDonald
The World Health Organisation defines zoonosis as ‘an infection shared in nature by man and animals’. This is an elegant way of describing it and implies that there is no need to coin terms to define the direction of transmission ... Read more


Hydatids

 

Hydatids in Australia: the current situation in rural domestic dogs | 2015
Written by: David J Jenkins
The hydatid transmission situation in Australia is complicated by a widespread wildlife reservoir that is important in perpetuating transmission of the parasite. Wildlife provides a reservoir of infection that periodically “spills over” into domestic dogs, livestock and humans ... Read more


Hypocalcaemia

 

Hypocalcaemia and ketosis associated with handling in late pregnant ewes | Posted October 2013
Written by: Bruce Watt
In this outbreak, 21 of 250 mature merino ewes suffered from clinical hypocalcaemia after they were held off feed for 26 hours, as they were mustered, crutched and drenched. Sixteen of 21 ewes recovered with treatment. Five of 21 ewes either died or were euthanased ... Read More

 

Hypocalcaemia in sheep | March 2012
Written by: Gabe Morrice
Hypocalcaemia in sheep is a non-seasonal, feed related condition that occurs predominantly in late pregnant and lactating ewes and weaner lambs. There is an increased incidence in older ewes and in multiparous ewes ... Read More

 

Ovine hypocalcaemia conundrums | March 2012
Written by: Bruce Watt
Hypocalcaemia while sporadic, occasionally causes major losses especially in pregnant and lactating ewes. It was estimated for example that between 100,000 and 300,000 pregnant ewes die from hypocalcaemia each year in Victoria ... Read More


Hypomagnesaemia

 

Grass tetany (hypomagnesaemia) in beef cattle: a selective review | March 2012
Written by: Bill Johnson
Grass tetany (hypomagnesaemia) kills more adult beef cows than any other disease in south-eastern Australia (Champness 2007). Sackett et al (2006) considered grass tetany the fourth most significant disease affecting southern beef production ... Read more

 

Hypoagnesaemia in sheep | March 2012
Written by: Steve Whittaker and Brigit Pitman
Metabolic diseases have been identified as a cause of sheep deaths in NE Victoria since the 1960s. Metabolic diseases cause mortalities in Hume Livestock Health and Pest Authority sheep flocks each year ... Read More

 

Hypomagnesaemic tetany in poll hereford cattle | September 2012
Written by: Steve Eastwood
Hypomagnesaemic tetany (grass tetany) is most common in late pregnant and lactating cows. Clinical signs develop when there are low magnesium levels in the cerebrospinal fluid ... Read more

 

Lazy calving, dystocia and hypomagnesaemia | December 2011
Written by: Judy Ellem
Owner reported prolonged calving times, 7 to 8 hours from first noticing heifer calving to calf being produced ... Read more


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Johnes disease

  

Environmental survival of MAP across New South Wales | March 2012
Written by: J Eppleston, DJ Begg, G Curran, N Dhand, B Watt and RJ Whittington
Mycobacterium avium subsp. paratuberculosis (Map), the cause of Johne’s Disease (JD), is defined as an obligate parasite of animals, meaning its survival outside of animals is finite ... Read more

  

Faecal PCR test for Johne’s disease: a new and improved semi-automated test | March 2012
Written by: Ian Marsh, Karren Plain, Francesca Galea, Anna Waldron, Ann-Michele Whittington and Richard Whittington
The development of a direct faecal polymerase chain reaction (DPCR) test for both ovine Johne’s disease and bovine Johne’s disease has been a goal in Johne’s disease research since the mid 1990s ... Read more

  

Johne’s disease B, S or C strain type: What does it all mean? | March 2015
Written by: Ian Marsh and Richard Whittington
The term bacterial strain now exists in two broad contexts: bacterial taxonomy and bacterial epidemiology - taxonomically, a bacterial strain is a population of bacteria that descend from a single organism or pure culture, while the epidemiological definition of strain refers to a phenotypic ... Read more

  

New faecal PCR test for paratuberculosis | April 2013
Written by: Richard Whittington, Karren Plain and Ian Marsh
In this report the results of validation of a new faecal PCR for detection of Mptb are described. This test is called the High Throughput Johnes (HT-J) test and will be offered through animal health diagnostic laboratories in Australia following approval ... Read more


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Kangaroo gait

 

Kangaroo gait in lactating ewes | December 2016
Written by: Annabel Cadzow and Bruce Watt
Kangaroo gait in lactating ewes is an unusual neurological disease of low flock prevalence that typically affects multiple bearing ewes of larger breeds 3-6 weeks after lambing ... Read More


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Lameness

 

Illness and mortalities in crossbred lambs, Erysipelothrix rhusiopathiae cultured from a single joint | February 2015
Written by: Nik Cronin and Hanna Thomas
This report outlines a case of illness and mortalities in ten month old cross bred lambs with depression, lameness and joint swellings post shearing ... Read More

 

Lameness and foot lesions in Dorper sheep | June 2011
Written by: Jillian Lawrence and Libby Read
Three cases of lameness in Dorper sheep were investigated during December and January ... Read More

 

Lameness and losses in crossbred ewes affected by floodwater | December 2012
Written by: Belinda Edmonstone
At the end of February and beginning of March 2012, the Lachlan River catchment received heavy rain over what was already a saturated area, with eight hundred 2 year old crossbred ewes stranded in water for 5 days ... Read More

 

Lameness in sheep associated with Tribulus terresteris | July 2013
Written by: David Cervera, Luis Miguel Ferrer and Delia Lacasta
Two sheep farms running 2500 sheep in total were affected with lamenes, in one flock 70 of 1000 sheep were affected ... Read More


Leishmaniasis

 

Canine article removed for academic purposes | Originally posted March 2016


Leptospirosis

  

A survey of leptospiral exposure in livestock and feral pigs - interim results - Central West LHPA | April 2013
Written by: Jillian Kelly, Susan McClure and Neil Charman
Leptospirosis causing clinical disease has been diagnosed infrequently by veterinarians over the last five to ten years; however cattle producers in the area often enquire whether vaccination is necessary. This study aims to address this question ... Read more

 

Changes in the epidemiology of bovine leptospirosis in the Narrabri district from 1991 to 2012 | April 2013
Written by: Shaun Slattery
This paper describes the change in the annual incidence of bovine leptospirosis in the Narrabri district from 1991 to 2012. Bovine leptospirosis changed from a frequently diagnosed cause of infertility in the early 1990s, to rare by 2000 ... Read more

 

Emerging zoonotic issues with leptospirosis & brucellosis | April 2013
Written by: Peter D Massey
There are more than 40 zoonotic diseases currently recognised of public health significance in NSW (Adamson et al, 2011). People with a zoonotic illness frequently present with non-specific symptoms so under-diagnosis may occur ... Read more

   

Leptospirosis in the Riverina | April 2013
Written by: Dan Salmon
Leptospirosis became a serious disease of cattle during the early 1970’s, at which time it was also a significant zoonotic infection. After several years, leptospirosis became a less significant disease of cattle to the point of being a very rare diagnosis ... Read more

 

Surveillance of swine brucellosis and leptospria spp. in feral pigs (Sus scrofa) and the potential risks to humans and livestock in northern NSW, Australia | April 2013
Written by: Camila Ridoutt, Amanda Lee, David Jordan, Barbara Moloney and Peter Massey
Zoonotic diseases such as swine brucellosis and leptospirosis are infections of near global distribution with serious health implications for humans and animals. Swine brucellosis exposure in humans follows occupational and recreational activities such as feral pig hunting or laboratory work as well as food borne infections from inadequately cooked feral pig meat ... Read more

   

Survey of leptospirosis exposure in livestock in the north west, central west, central north, darling and lachlan livestock health and pest authorities of NSW | June 2015
Written by: N Charman, A Hodge, C Colantoni and J Kelly
This paper describes a survey conducted to determine the level of Leptospira borgpetersenii serovar Hardjo and Leptospira interrogans serovar Pomona exposure in sheep flocks, cattle herds and feral pig populations through a serological surveillance of unvaccinated flocks and herds ... Read More


Lice

 

Lessons from a regional lice control project in the tablelands of NSW | June 2015
Written by: Jeff Eppleston and Bruce Watt
This paper describes the results achieved during the three year project and highlights some of the challenges and obstacles encountered to achieving good regional lice control ... Read More

 

Sheep lice control - investments and activities | August 2009
Written by: Jane Littlejohns and Johann Schroderb
AWI has invested over $4 million on lice research and lice extension since 2000 ... Read More

 

Sheep lice: Industry situation and changing control practices | March 2011
Written by: Peter James
The most recent estimate of the cost of lice (Bovicola ovis) to the Australian sheep industry was $123m p.a. of which $84m was due to control costs ... Read more

 

Sheep lice prevalence in southern Tablelands NSW | September 2012
Written by: S Popp, Jeff Eppleston, Bruce Watt, S Mansfield and RD Bush
In response to suggestions that the incidence of louse infestations in New South Wales has increased markedly, a survey of 173 producers was conducted in the Tablelands Livestock Health and Pest Authority region using visual detection and a questionnaire to document retrospective lice history ... Read More

 

Sheep lice treatment trial: imidacloprid (avenge) resistance or faulty product application ? | March 2012
Written by: Ian Masters
In August 2011, a producer from the Illabo district discussed his concerns with DV Wagga about possible imidacloprid resistance in sheep that had been treated with Avenge off shears the previous year ... Read More

 

What lice?
Written by: Narelle Sales | March 2015
The problem with lice infestations on sheep is that by the time you can see them it may have already cost the producer money and will certainly cost more before they are cleared up. Having a test that can detect 1 or 2 lice in a flock ... Read More


Lightning strike

 

Lightning strike in the Riverina | March 2015
Written by: Rahul Shankar and Elizabeth Braddon
Every year thousands of animals worldwide succumb to lightning injuries. Animals are particularly vulnerable as they are usually placed outside during severe storm events. Animals that have a large separation between their front and back legs (such as cattle) are vulnerable ... Read more

 

Presumed lightning strike | March 2012
Written by: Bruce Watt
The owner of a sheep property 45 km east of Bathurst presented a photograph of 15 of 70 sheep found dead under a tree ... Read More


Listeriosis

 

Listeriosis associated with silage feeding in goats | December 2011
Written by: Bob Templeton, Keith Hart and Bruce Watt
Listeria monocytogenes occurs widely in the environment and can be isolated from soil, decaying plants and silage. Man and many animal species can also be asymptomatic carriers ... Read more

 

Listeriosis in silage-fed ewes | December 2011
Written by: Ruth and Howard Thompson, Erika Bunker and Bruce Watt
Listeria monocytogenes is a bacterium capable of surviving and multiplying in a wide range of environments including moist soil, the gastro-intestinal tract of normal animals and in silage that has been exposed to air and has a pH of above 4.5 ... Read More

 

Two cases of caprine listeriosis | December 2012
Written by: Jacob Stone, Michelle Monaghan, Alison Wardman and Bruce Watt
In early July, a buck showing signs of hypersalivation, stupor and recumbency before death was autopsied. Two weeks later, the owner found a 3-year-old doe that was separated from the group, showing signs of disorientation, circling, followed by recumbency, leg paddling and death ... Read more


Lupinosis

 

Case of lupinosis | December 2012
Written by: Eliz Braddon
An owner was confronted with 30 dead sheep and at least that many staggering and apparently blind out of 1000 two-year old Merino ewes ... Read More


Lyssavirus

   

Australian bat lyssavirus update | Posted March 2016
Written by: Paul Freeman, NSW DPI Wollongbar
Australian Bat Lyssavirus is endemic in both insectivorous bats and megabats of Australia, where the prevalence in wild populations is estimated at less than one percent but in bats that are showing neurological signs a much higher prevalence occurs ... Read more

   

Management of lyssavirus in animals that interact with bats | June 2015
Written by: Sarah Britton
Australian bats (including flying foxes and microbats) are the natural reservoirs for a range of viruses that may infect and sometimes kill humans and other animals. The viruses carried by Australian bats include Hendra virus, Menangle virus and Australian Bat Lyssavirus ... Read more


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Malignant oedema

 

Presumed false blackleg (malignant oedema) in Angus steers | October 2014
Written by: Bruce Watt and Erika Bunker
Clostridium septicum is the causal agent of a number of wound and tissue infections of livestock including malignant oedema, gas gangrene, ‘false blackleg’ and swelled head in rams. However, as Cl. septicum is a post-mortem invader, its isolation from tissues alone is insufficient to establish a diagnosis ... Read more


Mareks disease

 

Mareks disease in Australia - developments in monitoring and control | April 2013
Written by: Stephen Walkden-Brown and Peter Groves
Early studies into the virulence of Australian isolates of MDV using non-standardised methods, suggested that some isolates were highly virulent and able to overcome the protective effects of vaccination ... Read more


Mastitis

 

Mannheimia mastitis and concurrent pneumonia in merino ewes with lambs at foot | August 2007
Written by: Bruce Watt
This report describes an occurence of Mannheimia mastitis with pneumonia in two merino ewes with lambs at foot ... Read More

 

Ovine mastitis outbreak caused by suspected bite wounds to the udder | March 2012
Written by: Maria Sanchez, Marta Borobia, Luis M. Ferrer, Aurora Ortin, Jose M. Gonzalez and Delia Lacasta
In this paper it is described an outbreak of acute mastitis as a result of bite wounds in the udder in a pre-partum meat sheep ... Read More

 

Staphylococcus aureus mastitis in a jaundiced ewe | February 2015
Written by: Bruce Watt and Patrick Shearer
In this case jaundice is presumed to be due to the elaboration of toxins associated with staphylococcal mastitis as there is no evidence of hepatopathy or copper poisoning ... Read More


Meningitis

 

Bacterial meningitis in a ram | Posted August 2017
Written by: Rahul Shankar and Erika Bunker
A case report describing an animal exhibiting severe neurological symptoms that was also eligible for the National Transmissible Spongiform Encephalopathy Program ... Read More


Metabolic conditions

 

Ovine metabolic conditions encountered in Central West LHPA | March 2012
Written by: Greg McCann
Sheep at the best of times don’t give a lot away when being assessed by a clinician. This can be a daunting trait when the examining clinician does not have the benefit of experience ... Read More


Mineral deficiencies

 

Copper deficiencies in North Coast Hereford cows | January 2014
Written by: Ainslie Lund
Copper deficiency is quite common on the mid and north coast of NSW with many soils low in available copper, with availability strongly affected by molybdenum and sulphur levels and possibly iron as well ... Read more

  

Lack of response to trace mineral supplementation of sheep and cattle on the central tablelands of NSW | June 2015
Written by: Bruce Watt, Kate Crawford and Jeff Eppleston
In this paper we present the findings from two studies in sheep and cattle in which production responses following supplementation with selenium, vitamin B12 and a commercial mineral mix were absent in the face of low blood levels of GSHPX and/or vitamin B12 ... Read More

 

New concepts in the use of trace minerals in cattle | July 2012
Written by: Ann Kenny
Deficiencies in trace minerals can cause severe abnormalities and in some cases death. Conversely, high concentrations of trace minerals can cause acute or chronic toxicity, also leading to death in some cases ... Read more

 

Phosphorus deficiency in cattle on the southern and central tablelands of NSW | March 2011
Written by: Bill Johnson and Bruce Watt
Phosphorus deficiency in cattle may cause symptoms related to reduced appetite, including retarded growth rate of young cattle, low milk yield and impaired fertility ... Read more

 

Phosphorus deficiency in sheep - a case report | March 2012
Written by: Bill Johnson
Symptoms of primary phosphorus deficiency are seen frequently in NSW cattle, when grazing mainly native pastures in coastal, rangelands, and more recently tablelands areas ... Read More

 

Rationale for conducting a vitamin B12 response trial in an area with no indication of cobalt deficiency | December 2010 Written by: Bruce Watt and Jeff Eppleston
We conducted a response trial in which half of a mob of crossbred lambs was treated with vitamin B12 at lamb marking ... Read More

 

Reflections on selenium in the Lower Hunter | March 2015
Written by: Digby Rayward
Selenium is the most common trace element deficiency seen in the Lower Hunter. In non supplemented cattle we see the GSHPX levels bouncing along below or near the accepted normal range 40-300 and it takes very little changes in pasture conditions to push these stock into the clinically deficient zone ... Read more

 

Rickets in lambs on grazing cereal crops | March 2012
Written by: Belinda Edmonstone
Rickets is a disease of young growing animals characterised by defective calcification of growing bones. Bones are subject to pressure distortion and fractures. Rickets can be caused by a deficiency in vitamin D, calcium and/or phosphorus or an imbalance of the calcium: phosphorus ratio ... Read More

 

Selenium deficiency in weaned Hereford calves | March 2011
Written by: Bruce Watt
In April 2010, the owner of a mob of 120 calves called because he noticed that a marked ?tail? had developed in both the weaned heifer and steer mobs ... Read more

  

Selenium nutrition of sheep and cattle | March 2011
Written by: Bruce Watt and Jeff Eppleston
Selenium deficiency is characterised by myopathy and ill thrift in lambs and calves and infertility in ewes and cows. Selenium intoxication is a risk when livestock are overdosed ... Read more

 

Selenium deficiency on the Southern Tablelands in 2014 | April 2015
Written by: Alexandra Stephens
Clinical expression of selenium (Se) deficiency, in the form of white muscle disease in sheep and marked ill-thrift in cattle was seen in the spring of 2014 in the Yass and Monaro districts ... Read more

 

Subacute nutritional muscular distrophy (white muscle disease) in angus calves | March 2012
Written by: Bruce Watt and Tanya Rajkumar
Subacute nutritional muscular dystrophy is a myodegenerative disease caused by selenium deficiency. It affects both calves and lambs, targeting the limb muscles, while the acute form of the disease affects the myocardial and respiratory muscles ... Read more

 

Swayback in Western Division, NSW | March 2012
Written by: Dermot McNerney and Kaiser Dawood
A visit was made to the property three days after viewing a video clip of a ewe and a lamb both with coordination difficulties. The lamb had complete loss of function in the hind limbs ... Read More


Mortalities

 

Field investigation of kangaroo deaths in Sturt National Park and areas near Tibooburra in early 2010 | March 2011
Written by: Greg Curran
Kangaroo deaths were reported within about 100km of Tibooburra NSW, including within Sturt National Park. On investigation, the animals affected were red kangaroos ... Read more

 

Intestinal accident in fedlot lambs | August 2007
Written by: Eloise Cotton and Shaun Slattery
Sudden death in lambs with post mortem signs redolent of Redgut, but something is not quite right ... Read More

 

Neonatal lamb mortality | Posted March 2016
Written by: Scott Ison
Lamb survival in Australian flocks has become a focal point of industry groups and researchers in recent years. The recent MLA report listed Neonatal Lamb Mortalities as the most costly of 17 cattle, 23 sheep and nine goat diseases ... Read more

 

Sheep deaths associated with the administration of controlled-release capsules | December 2012
Written by: Bill Johnson
Ewes were standing away from the mob, some apparently blind and unaware of their surroundings, for about twenty-four hours prior to being found dead. ... Read More

 

Turtle mortalities on the Bellinger River | May 2015
Written by: Sarah Britton
In mid-February 2015, an increasing number of sick and dead turtles were reported from a section of the Bellinger River, presenting as emaciated and with severe eye lesions causing blindness ... Read more

   

Wild Bird Mortalities | April 2013
Written by: Matt Ball
A beef cattle producer, located at Eureka NSW (near Lismore), reported to the North Coast LHPA the death of wild birds on his farm. The deaths began in mid January 2013 and all the birds were being found in one particular paddock ... Read more


Mycotoxicosis

 

Mycotoxicosis in a merino flock | February 2015
Written by: Megan Davies
Mycotoxins are secondary mould metabolites produced by certain species of fungi commonly found in grain, hay and silage, and occur as a result of fungal contamination of the feed during growth, harvest or storage ... Read More


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Necrosis

 

Distal limb necrosis in a hereford calf | March 2011
Written by: Bruce Watt and Patrick Staples
Distal limb necrosis is occasionally encountered secondary to septicaemia, most notably from Salmonella, and from the ingestion of fungal toxins ... Read More


Nephritis


 

A study into reports of nephritis in lambs in the South Australian mallee | Posted April 2017
Written by: Jeremy Rogers & Elise Matthews & Kirsty Cordon
An apparently rising incidence of lesions described as “Nephritis” in lambs being inspected at two major abattoirs in South Australia led to a study attempting to define the syndrome, it’s costs to production (if any) and possible mitigations ... Read More

Neurological conditions

 

Flavivirus Neurological Disease in Horses - Information for Vets | June 2011
Written by: Belinda Walker
Since late February there has been an increase in reports of horses displaying unusual neurological signs across NSW. Similar cases have been reported in Victoria and South Australia ... Read more

  

Neurological cases in ruminants | September 2010
Written by: Ted Irwin
A number of maladies producing various neurological signs in different species ... Read more

 

Neurological signs and sudden death in horses located in close proximity | August 2015
Written by: Colin Peake, Suzie Richards and Jo Ward
This report details two cases involving neurological signs and sudden death in horses. Two different properties were involved, however both were in relatively close proximity to each other along the Lachlan River ... Read more


Nutrition

 

A review of vitamin B12 supplementation in sheep | April 2013
Written by: Elizabeth Barter
In recent years, the use of supplementary vitamin B12 in sheep to improve fertility and weight gain has increased. This use has extended to areas that do not have cobalt deficient soils and where deficiency of vitamin B12 in sheep is not suspected ... Read More

  

Malnutrition, condition score and disease | July 2012
Written by: Susan McClure
Pasture-fed livestock are at risk of nutritional imbalance for many reasons including availability and composition of the pasture on the one hand and the animal’s requirements for maintenance, growth and production on the other ... Read more

Vitamin B12 in sheep on the NSW southern tablelands | March 2011
Written by: Bill Johnson
Vitamin B12 is essential for normal growth in sheep, and is produced from cobalt in the rumen. Depending on the severity of the deficiency and age of the animal ... Read more


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Oedema

 

Ventral oedema in Angora goats | January 2014
Written by: Melissa Sullivan, Michelle Monaghan, Diane Ryan and Bruce Watt
South African angora goats produce some of the finest mohair in the world but unfortunately, this selection for high quality fleeces has been linked to traits of reduced fitness, including a susceptibility to ventral oedema, known colloquially as ‘water belly’ or ‘swelling disease’ ... Read more


Oesophagitis

 

Oesophagitis mortalities | Posted March 2016
Written by: Andrew Peters, Timothy Biffin, Emma Croser and Janet Wild
Sudden death was reported in 22 of 2100 merino crossbred weaner lambs (3-4 months old) showing symptoms that were rapidly progressive, including weakness, altered mentation, ... Read More


Omphalitis

 

Omphalitis in layer chicks | Posted September 2016
Written by: Kate Peffer
Omphalitis, colloquially known as yolk sac infection, is the main infectious cause of chicken mortality in the first week post-hatching and accounts for large economic losses to the poultry industry ... Read more


Osteomalacia

 

Osteomalacia in grower pigs | August 2008
Written by: Shaun Slattery and Siobhan Egan
Pigs becomes afflicted with hindlimb paralysis and loud squealing when disturbed ... Read more


Osteomyelitis

 

Vertebral abscesses causing hindlimb paresis in lambes | October 2010
Written by: Bruce Watt
Vertebral osteomyelitis is generally assumed to be an ascending infection post tail docking and/or mulesing ... Read More


Ovine brucellosis

 

Eradication of ovine brucellosis in Dorpers | Posted October 2013
Written by: Tahleah Haddow
Dermot McNerney, Senior Veterinary Officer, NSW DPI, Dareton

Historically the producer tested annually for ovine brucellosis and had found no evidence of infection for several years but testing had been neglected ... Read More

 

Review of a prolonged Brucella ovis eradication | March 2012
Written by: Michaela Woolford and Libby Read
Brucella ovis infection is a major cause of epididymitis and infertility in rams, resulting in reproductive failure and significant economic losses ... Read More


Ovine johnes disease

 

Gudair® vaccine efficacy | August 2010
Written by: Josephine Gollan, Jeff Eppleston, Navneet Dhand and Peter Windsor
The influence of management factors on the efficacy of Gudair® vaccine is studied ... Read More

 

OJD High Mortality | May 2007
Written by: John Evers and Bruce Watt
High losses reported in the unvaccinated wether portion of a mixed merino flock ... Read More

 

OJD Staggers | September 2011
Written by: BR Watt, Eliz Braddon, Sarah Robinson and Tony Morton
Oil based vaccines, as used in Australia to control ovine paratuberculosis, provoke a local tissue reaction that can include granulomatous cellulitis and lymphadenitis. If the vaccine is incorrectly administered ... Read More

 

OJD - Adverse reactions to Gudair® vaccine | May 2007
Written by: Tony Morton
Discharging abscesses, granulomatous lesions in Wiltshire Horns ... Read More

 

Ovine Johnes Disease | August 2007
Written by: Eliz Braddon
A producer worried about thin sheep, with sporadic losses, but finding no relief with a thorough drenching program ... Read More


Ovine segmental axonopathy

 

Ovine segmental axonopathy in two fine wool merino flocks | Posted August 2017
Written by: Petrea Wait, Katherine Loring, Patrick Shearer, Tom Westermann, Erika Bunker & Peter Windsor Cases of OSA are reported sporadically and incidence within affected flocks and age of affected animals varies, however, all cases are reported to be progressive, occur in adult fine wool merinos and cause hindlimb paresis, resulting in ataxia and recumbency ... Read More


Oyster farming

Oyster farming and inputs from veterinay science | April 2013
Written by: Richard Whittington and Ika Paul-Pont
Aquaculture is one of the fastest-growing industries producing animal protein to feed a growing global population ... Read more


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Parasites—external

 

Atypical chorioptic mange in cattle | October 2010
Written by: Libby Read and Shaun Slattery
A small herd of 16 adults and 2 calves developed intense pruritis in association with nodular skin lesions ... Read more

Blowfly strike waves: Biology and control | March 2011
Written by: Peter James
L. cuprina is by far the most important fly strike species, responsible for more than 90% of strikes. Brown blowflies (Calliphora spp.) can cause strikes in cooler weather in some areas and are often the species involved in wound strikes ... Read more

 

Paralysis ticks in the New England, an emerging problem? | April 2013
Written by: Lisa Martin
Since 2011, there have been numerous anecdotal reports of cattle losses to paralysis ticks (Ixodes spp.) in the Northern and Eastern Fall areas of the New England LHPA ... Read more


Parasites—internal

 

Age, liveweight and immunity of lambs to worms | July 2012
Written by: Susan McClure
Lambs frequently fail to develop protective immunity to gastro-intestinal nematodes resulting in direct losses from mortality and decreased production, and indirect costs associated with treating ... Read More

 

Barbervax: Potentially a new tool for the control of barber’s pole worm of sheep | April 2013
Written by: WD Smith, GFN Newlands, JL Fitzpatrick, R Dobson, and B Besier
An application is about to be submitted to the Australian Pesticide and Veterinary Medicines Authority (APVMA) seeking authority to launch "Barbervax", a novel vaccine to aid in the control of Barber’s pole worm ... Read More

 

Cattle nematodes on the mid-north coast of NSW | Posted March 2016
Written by: Jim Kerr
Investigation of weight loss in cattle in the Taree and Gloucester districts of NSW sometimes implicates gastrointestinal worms as a likely cause ... Read more

 

Cattle worms - update | April 2013
Written by: Stephen Love
As with other grazing livestock, use of anthelmintics plays an important role in worm control, although integrated parasite management, including nutrition and grazing management, is vigorously promoted, but variably adopted ... Read more

 

Cost of cattle parasites in Central Tablelands of NSW | August 2009
Written by: Jeff Eppleston and Bruce Watt
Monitoring of worm egg counts in 18 cattle herds in the Central Tablelands ... Read more

 

Cysticercus bovis: background to the NSW program and review of cases | Posted April 2017
Written by: Graham Bailey
The metacestodes (or larval cestodes) of Taenia secies tapeworms are the cause of cysticercosis in various farmed and wild animals and in humans ... Read more

 

Epidemiology of gastrointestinal nematodes in sheep grazing irrigated summer pastures | March 2012
Written by: Dan Salmon
The epidemiology of gastrointestinal nematodes in summer rainfall and winter rainfall and even the uniform rainfall area has been fairly well described. This paper is a belated report on trial work done many years ago ... Read More

 

Fascioliasis and severe worm burdens in young calves | May 2012
Written by: Jack Neville-Towle and Matthew Ball
In early February 2012, a beef producer contacted the Lismore District Veterinarian about a severely pale calf, concerned that the calf had contracted a congenital disease ... Read more

  

Field gastrointestinal worm count in sheep and goats | Posted April 2017
Written by: Bill Johnson
With practice, a field total worm count adds less than ten minutes to a routine autopsy, far less time than to collect and submit laboratory samples, and requires minimal equipment ... Read More

 

Haemonchus dipstick test for detecting Barbers Pole worm in sheep | August 2010
Written by: Mark Doherty
The use of a test to detect traces of haemoglobin in faeces reflecting worm burdens ... Read More

 

Haemonchosis in lambs one month post Ivermectin drenching in low rainfall South Australia | July 2017
Written by: Jeremy Rogers
An outbreak of haemonchosis killed lambs rapidly, without signs of scouring within one month of being drenched with ivermectin suggesting that drench resistance contributed ... Read More

 

Laboratory detection of Fasciola hepatica in live sheep | Posted March 2016
Written by: Rob Woodgate, Tara Cassidy and Stephen Love
In this paper we briefly review testing options and report some of the results to date in evaluating a faecal antigen ELISA test as an alternative for checking live sheep for F. hepatica ... Read More

 

Larval hypobiosis Teladorsagia (Ostertagia) circumcincta | March 2012
Written by: Dan Salmon
Inhibited fourth-stage larvae (L4) of Ostertagia ostertagi are an important factor in the development of clinical ostertagiasis of cattle in southern Australia before the development of effective anthelmintics ... Read More

 

Liver fluke in steers | February 2011
Written by: Matthew Ball with map by Keith Newby
A case study of liver flike in steers on the north coasat of NSW ... Read more

 

Lung worm infestation in north coast beef weaners | May 2014
Written by: Ainslie Lund
All animals showed signs of weight loss and scours prior to death. The owner had noticed some animals, but not all, had a cough ... Read more

 

Macracanthorynchus hirudinaceus in feral pigs | June 2015
Written by: Bruce Watt
The giant thorny headed worm, Macracanthorhynchus hirudinaceus, is primarily a parasite of pigs but can infest other species including dogs and humans ... Read More

 

Ostertagiasis Type I in yearling steers | August 2009
Written by: BR Watt and Jeff Eppleston
Type 1 ostertagiasis typically occurs in the winter and spring in beef weaners ... Read more

 

Ostertagiasis Type II in beef cattle on the Northern Tablelands | August 2009
Written by: Steve Eastwood
Type II ostertagiosis is an uncommon syndrome of synchronous maturation ... Read more

 

Turning the worm | March 2015
Written by: Stephen Love
Turning the Worm is a twist on ‘the worm turns’ which refers to people, groups or things that, after being badly treated for a long time, suddenly and forcefully resist. The worms we deal with can be a bit like that ... Read More

 

WormBoss: capturing the information from Integrated Parasite Management in sheep | April 2013
Written by: Lewis Kahn
Gastrointestinal nematode parasites impose the largest animal health cost to the Australian sheep industry. The majority of this cost is associated with production loss which occurs despite control strategies implemented on farm by sheep producers ... Read More


Peste des petits ruminants

   

Peste des petits ruminants (PPR) too early to panic but too late to ignore | March 2012
Written by: Bruce Watt
Gareth Bath, Dept Production Animal Studies, Faculty of Veterinary Science
University of Pretoria

"Perversely ... as one morbillivirus of farm animals ceases to be important, another moves to centre stage. Deaths among small ruminants due to PPRV continue to mount in the form of rolling epidemics moving across international borders ..." Read more


Pica

 

Fatal perforation of the reticulum and diaphragm caused by a cow eating a kangroo tibia | December 2011
Written by: Derek Lunau
A ten year old Hereford cross cow with a two month old calf at foot was reported to be losing weight and lethargic ... Read more


Pigeon paramyxovirus

 

PPMV1, Melbourne to Sydney reflections on the tales of two cities | April 2013
Written by: George Arzey
On 2/9/2011 a veterinarian in Melbourne was alerted by a call from Vic DPI informing him about the diagnosis of PPMV1 (pigeon paramyxovirus) in Shepparton ... Read more


Pneumonia

 

Acute post drenching mortality in lambs | July 2013
Written by: Brigit Pitman
A mob of ewes and lambs were yarded for drenching and weaning. One thousand one hundred lambs were drafted from the ewes and eleven lambs died within 12 hours of drenching ... Read More

 

Arcanobacterium pyogenes pneumonia in lambs | March 2011
Written by: Mandi Carr
Pneumonia is the single greatest cause of deaths in sheep. Nursing lambs and lambs 5-7 months of age have a higher incidence than animals in other age groups ... Read more

 

Mannheimia haemolytica pneumonia in beef calves | October 2013
Written by: Libby Guest
This is a report of an unusual outbreak of pneumonic pasteurellosis (Mannheimia haemolytica) in extensively-managed, unweaned beef calves on a drought-affected property near Burren Junction ... Read more

 

Mannheimia mastitis and concurrent pneumonia in merino ewes with lambs at foot | August 2007
Written by: Bruce Watt
This report describes an occurence of Mannheimia mastitis with pneumonia in two merino ewes with lambs at foot ... Read More

 

Mannheimia pleuritis and bronchopneumonia in young merino lambs | August 2007
Written by: Bruce Watt and Patrick Staples
This report describes an outbreak of Mannheimia spp pneumonia in two to four week old lambs ... Read More

 

Pneumonic and vertebral abscesses in a Dorper lamb | March 2011
Written by: Evelyn Walker
One lamb was found in the paddock and unable to ambulate. The affected lamb was presented with hindlimb paralysis of 72 hour duration. The owner reported similar findings in at least 6 others ... Read more


Poisoning

 

Arsenic and young cattle don’t mix | March 2011
Written by: Eliz Braddon
Sudden death of 16 of 100, 2 year old steers was reported to a local private practitioner on 27 Dec 2009. The cattle had arrived for agistment 10 days ... Read more

 

‘Bronopol’ poisoning in calves | November 2016
Written by: J Rogers, PIRSA
Bronopol is a commonly used preservative in milk that is added to fresh milk prior to testing, after which the milk is fed to livestock ... Read more

 

Closantel toxicity in crossbred lambs| September 2016
Written by: Bruce Watt and Erika Bunker
Anecdotally, closantel intoxication causing a low prevalence of death and blindness is occasionally encountered by sheep producers on the central tablelands of New South Wales and elsewhere ... Read More

 

Lead poisoning | May 2007
Written by: Eliz Braddon
Sudden death in cattle showing no premonitory signs ... Read more

 

Lead poisoning in a mob of steers | November 2015
Written by: Megan Davies and Ted Irwin
A single 8 month old Charolais x steer was separate from the mob, looking dull, depressed and able to be approached and touched ... Read more

 

Lead poisoning in yearling cattle | December 2011
Written by: Libby Read
Four heifers died from a mixed mob of 45 yearlings grazing a sparse, mature oats crop on sandy soil ... Read more

 

Primary copper poisoning in two flocks of ewes | August 2009
Written by: Bruce Watt and Tristan Maugauret
In southeastern Australia the most common cause of copper poisoining is ... Read More

 

Salt poisoning in cattle | April 2015
Written by: Scott Ison
Salt toxicity in ruminants occurs most frequently when salt-rich solutions are consumed during a period of restricted access to water, followed by unrestricted access to fresh water ... Read more

 

Superphosphate poisoning in sheep | July 2012
Written by: Eliz Braddon
Cases of superphosphate poisoning are reported as rare in the literature. The fact that I have seen two of these cases in seven years seemed unusual ... Read More

 

Suspected fluquinconazole toxicity in beef cows | May 2014
Written by: Ted Irwin
Poisoning with Fluquinconazole in livestock can result in clinical signs such as ataxia, weakness, and death, however reports of clinical cases from toxicity are difficult to find ... Read more

 

Water (salt) intoxication in a mob of steers | Posted November 2015
Written by: Megan Davies
Water deprivation and subsequent intoxication is not an uncommon occurrence in cattle and sheep and may be seen after transport, excessive heat or unexpected failure of water supplies ... Read more

 

Zinc phosphide toxicity in crossbred ewes | Posted March 2016
Written by: Gabrielle Morrice
Zinc phosphide is a rodenticide used to treat grain, and used extensively in recent mice plagues to control mice damage in crops through perimeter baiting of crops ... Read More


Poisoning—plants

 

Acute bracken toxicity in beef cattle | July 2012
Written by: Ian Poe
Bracken fern is a native warm-season perennial fern adapted to most soil types. This report describes a case of the acute haemorrhagic syndrome in beef cattle ... Read more

 

Bracken fern poisoning in heifers | Posted October 2013
Written by: Ainslie Lund
Bracken fern (Pteridium esculentum) contains ptaquiloside, a norsesquiterpene glycoside, which has been shown to cause both neoplasia and acute haemorrhagic syndrome in cattle and is a common cause of cattle mortalities on the North Coast of NSW. The following case study describes Bracken fern toxicity in 3 heifers on a farm in the Pillar Valley ... Read more

 

Burrawong palm hepatopathy | May 2007
Written by: Allan Glassop
A mortality investigation of cattle following consumption of Burrawang palms ... Read more

 

Crystal assocated cholangiopathy (Yellow Big Head) in lambs grazing Tribulus terrestris | July 2013
Written by: Greg McCann
A mob of 340 6-8mo cross bred lambs were grazed on a canola stubble paddock in February after receiving 50mm of rain some 6 weeks previously. Two days after introduction, a couple of lambs were noted as hanging back ... Read More

 

Curved rice flower (Pimelea curviflora) associated with deaths in cattle in the Riverina | October 2014
Written by: Gabrielle Morrice
Although curved rice flower/tough-barked rice flower (Pimelea curviflora) occurs in the south western region of NSW, it has not previously been recorded as a cause of death or illness in cattle in this region ... Read more

 

Field pea mania (suspected) | September 2012
Written by: Dr Jillian Kelly
Hypersensitivity reactions involving manic behaviour in cattle grazing Field Pea (Pisium sativum),crops, referred to as "Field Pea Mania", are dramatic but short lived ... Read more

 

Field pea toxicity in two hereford heifers | September 2012
Written by: Joanne Taylor and Shaun Slattery
The field pea (Pisum sativum var avense) is a rapid-growing fodder legume, high in protein and energy. Field Pea toxicity in cattle has been described previously ... Read more

 

Field pea toxicity in cattle | April 2013
Written by:Ted Irwin
Field pea toxicity or "pea mania" is a relatively rare condition in cattle grazing field peas. It has been described but to date the toxic principal is unknown, as are the conditions that lead to the occurrence of toxicity ... Read more

  

Fireweed in sheep and the food chain | Posted April 2017
Written by: Helen Schaefer
Fireweed is one of approximately thirty Senecio species reported to be responsible for livestock and human toxicity around the world. The toxic potential of Senecio species is due to the presence of pyrrolizidine alkaloids in all above-ground parts of the plant ... Read More

 

Goitrogenic compounds causing congenital goitre in Poll Dorset lambs | September 2011
Written by: Penelope Hasson, Penelope Brown and Robert Watt and Bruce Watt
Last spring lambing (2010), the producer noted a reduced lambing rate compared with normal years, in addition to an increased number of late term abortions and stillbirths ... Read More

 

Gossypol poisoning | August 2007
Written by: Andrew Thompson
A mortality investigation with three calves dying in the space of a week ... Read more

 

Heliotrope poisoning - the steer in the dam | August 2010
Written by: Tony Morton
A young steer standing in the middle of a dam and not inclinded to venture to dry ... Read more

 

Hemlock poisoining suspected in the sudden death of two heifers | March 2012
Written by: Katie Boulton and Bruce Watt
When investigating sudden death, several aetiological categories need to be considered. These include toxicities (plant and otherwise), infectious diseases, nutritional accidents, misadventure and anaphylaxis. In the case presented, two heifers were found dead well after it was feasible to conduct an autopsy ... Read more

 

Hepatogenous photosensitisation in lactating ewes on grazing oats that were direct drilled into a fungus-affected barley stubble | November 2015
Written by: Amy Shergold
A mob of ewes with four-month old lambs at foot was put onto a grazing oat crop and two weeks later 200 of 1000 ewes showed signs of photosensitisation ... Read More

 

Lythrum hyssopifolia (lesser loosestrife) poisoning in cattle | March 2011
Written by: Tony Morton
Lesser loosestrife is a widely distributed weed being recorded in SA, NSW, Vic and QLD. It prefers wetter areas and is considered to be relatively unpalatable ... Read more

 

Mother of millions toxicity in pregnant cattle | September 2011
Written by: Libby Read
One cow was found dead in a mob of calving cows, with another cow depressed, lethargic, inappetant with watery, brown diarrhoea ... Read more

 

Myocardial form of nutritional muscular dystrophy in calves on clover dominant pastures | December 2012
Written by: Bruce Watt and Patrick Staples
The manager of a cattle property in the Peelwood district noticed that a one-month-old Angus calf became lethargic then die. Subsequently two more large well-grown calves were noticed to be lethargic and suffered respiratory distress when mustered ... Read more

 

Nicotiana glauca toxicity in cattle | July 2013
Written by: Tahleah Haddow and Dermot McNerney
Nicotiana glauca (tree tobacco) is an upright, small, spindly tree with broad, elliptical, bluish-green leaves and pale yellow, tubular flowers. It is an introduced species of Argentina and regarded as an environmental weed ... Read more

 

Nitrate poisoning | August 2008
Written by: Ross Kemp
More than 120 cattle died during Autumn. The toxic nitrate level is greater than 1200 to 1800 mg/kg ... Read more

 

Nitrate poisoning in merino ewes introduced to a canola stubble | July 2017
Written by: Bruce Watt
Ruminants are particularly susceptible to nitrate poisoning because rumen microflora convert nitrate to ammonia via highly toxic nitrites ... Read more

 

Novel case of fat toxicity in holstein-friesian cows following the consumption of dessicated coconut | April 2013
Written by: Rebecca Hallett, Ben Schulz and Colin Peake
This report details a novel case of fat toxicity in an 800 cow Holstein-Friesian dairy causing widespread mortality over a period of approximately one week, associated with the inclusion of desiccated coconut into the fed ration ... Read more

 

Oleander toxicity - What is your evidence? | March 2011
Written by: Helen McGregor
It is not unusual to find an Oleander shrub in the older farm homesteads throughout Australia. This plant has a reputation as both a possible medical saviour and an efficient killer of many species ... Read more

 

Oxalate poisoning in a beef herd grazing Setaria sphacelata - a case report | March 2012
Written by: Will Hawker
The Lismore District Veterinarian was contacted in December 2011 following the sudden death of three steers that had been introduced six months ago as part of a larger herd of 200 and had been grazing low lying country ... Read more

 

Paspalum staggers (nervous ergotism) in steers | September 2011
Written by: Bruce Watt and Andrew Denman
It has been know for over 100 years that sheep, cattle and horses can develop a ‘staggers’ syndrome after ingesting the seed heads of paspalum ... Read more

 

Phalaris poisoning syndromes | Posted September 2016
Written by: Associate Professor Peter Windsor
Phalaris aquatica does have the potential to become a toxic pasture plant, producing a variety of unrelated syndromes which manifest either as neurological or cardiac disturbances ... Read More

 

Phalaris staggers | September 2012
Written by: David Rendell
Phalaris staggers risk is a function of paddock soil cobalt levels, level of soil ingestion and level of phalaris dominance and palatability. Cases can occur at all times of the year but peaks in late winter ... Read More

 

Phalaris staggers persisting for seven months post exposure in crossbred lambs | December 2012
Written by: Simon Choi, Erika Bunker and Bruce Watt
A report of phalaris staggers affecting only the lambs from a mob of first cross ewes and lambs with deaths continuing to occur for seven months post exposure and clinical signs for eight months. ... Read More

 

Phalaris sudden death in lambs | Posted August 2017
Written by: Lucienne Downs and Erika Bunker
Phalaris is responsible for three apparently unrelated syndromes of toxicity: phalaris “staggers” which has been reported to affect sheep, cattle and kangaroos, and two forms of phalaris “sudden death” which have been reported to affect sheep, cattle, alpacas and horses ... Read More

 

Photosensitisation and cholangiohepatopathy (Dikoor) in lambs grazing a forage brassica crop contaminated with Panicum gilvum | July 2013
Written by: Bruce Watt, Belinda Hackney and Erika Bunker
Brassicas, when grazed, can cause several livestock health problems but are not reported as causing cholangiopathy or hepatopathy. This is a report of a case of crystal-associated cholangiohepatopathy in lambs grazing Winfred forage brassica ... Read More

 

Photosensitisation caused by st john’s wort | March 2012
Written by: Evelyn Walker
A sheep producer from the Yeoval area reported problems with severe sunburn in one mob of 350 adult Merino ewes with 200 lambs at foot in late November 2011. The owner first noticed droopy ears and scabby faces ... Read More

 

Rape blindness (polioencephalomalacia) in cattle | July 2013
Written by: Jillian Kelly
Rape blindness is one of a number of possible disease manifestations associated with grazing brassicas. It has not been diagnosed in recent years in the Central West but is an example of the problems that can be encountered when farmers use alternative feed sources in dry times ... Read more

 

Pimelea poisoning in cattle | August 2010
Written by: Kylie Greentree
A calf presents with severe ventral oedema and respiratory distress ... Read more

 

Pyrrolizidine alkaloid poisoning in cattle - Case 1 | August 2010
Written by: Ian Masters
Young cattle that walk with a sloshing sound that go on to die ... Read more

 

Pyrrolizidine alkaloid poisoning in cattle - Case 2 | August 2010
Written by: Bruce Watt and David Payten
A case of ongoing mortalities in a cow herd months after summer grazing ... Read more

 

Pyrrolizidine alkaloid toxicity in dairy heifers | January 2014
Written by: Katelyn Braine and Dan Salmon
Pyrrolizidine alkaloids are amongst the most important natural toxins affecting livestock, the main sources are plant species including Senecio, Ageratum, Heliotropium, Echium) and Crotalaria. This report details an ongoing case of pyrrolizidine alkaloid toxicity in a group of dairy heifers over a 10 month period ... Read more

 

Pyrrolizidine alkaloid poisoning of sheep | March 2012
Written by: D Salmon
Pyrrolizidine alkaloids are toxins contained in many plants of which two, heliotrope and Paterson’s curse, are common in southern NSW. The toxins cause liver damage ... Read More

 

Renal failure in calves caused by Amaranthus retroflexus | September 2015
Written by: Lucienne Downs and Charlotte Campbell
Ingestion of Amaranthus retroflexus is associated with two syndromes of poisoning in cattle: toxic nephrosis and methaemoglobinaemia due to nitrate-nitrite poisoning ... Read More

 

Rock fern poisoning | August 2007
Written by: Andew Thompson
Significant mortality following good rain with sheep collapsing on handling for ... Read More

  

Rockfern poisoning in sheep and cattle | July 2013
Written by: Duncan McRae, Katie Kent and Greg McCann
Rock fern poisoning is capable of causing significant disease in both sheep and cattle.
Signalment: Early weaned dairy calves placed in pasture with no mature animals.
Problem: All calves in the paddock had died ... Read More

 

Secondary photosensitisation in lambs due to crystal associated cholangiohepatopathy while grazing common heliotrope (Heliotropium europaeum) probably caused by Panicum sp. toxicity | September 2015
Written by: Scott Ison and Helen Peam
Secondary photosensitisation occurs when the photodynamic compound phytoporphyrin, a microbially produced metabolite of chlorophyll, is not cleared by the diseased liver of a herbivore and accumulates in the circulatory system and then in the skin ... Read More

 

Smartweed (Persicaria spp.) poisoning in cattle | April 2013
Written by: Ian Lugton
Deaths occurred during one of the worst summer dry periods experienced in the Bega valley. Prevailing conditions led stock to graze green forbs at the edge of drying dams and swampy areas. As it transpired, these were dangerous places to go for a green pick after hot weather ... Read more

 

Suspected sticky nightshade (Solanum sisymbriifolium) intoxication in a greater Sydney beef herd | February 2015
Written by: Kate Sawford
Plants in this genus produce many toxic alkaloids, including solanine, in their leaves, fruit, and tubers with a number of mammalian species known to be at risk to toxicity, including cattle, sheep, goats, chickens, ducks, horses, rabbits, dogs, and humans ... Read more

 

Widespread primary photosensitisation of unknown aetiology in sheep in the NSW Riverina
Written by: Dan Salmon, Linda Searle, Roseanne Farrant, Des McRae, Mark Corrigan and Scott Ison | Posted November 2015
In late April and early May of 2015 there was a significant occurrence of photosensitisation in sheep which appeared to be primary photosensitisation without liver damage ... Read More


Polioencephalomalacia

 

Polioencephalomalacia in adult ewes in the tablelands of NSW | March 2012
Written by: Nicole Burns and Alan Taylor
Polioencephalomalacia (PEM) is a histological description of a neurological disease in ruminants that is a result of various aetiologies, including high sulphur intake, altered thiamine status, salt poisoning/water deprivation and lead poisoning ... Read More

 

Polioencephalomalacia in a merino flock | August 2009
Written by: Steve Eastwood
In March 2008, 30 mixed aged, merino ewes died. The 500 head flock had been ... Read More


Porcine epidemic diarrhoea

 

Porcine Epidemic Diarrhoea | March 2015
Written by: Amanda Lee
Porcine epidemic diarrhoea (PED) is characterised by acute, rapidly spreading viral diarrhoea. Pigs are the only known hosts of PEDv. There are no public health or food safety concerns ... Read more


Post weaning multisystemic wasting syndrome

 

Suspect case of post-weaning multisystemic wasting syndrome | August 2008
Written by: Phillip Kemsley
A disease complex in weaner pigs first presented in January 2005 ... Read more


Predation

 

Case of the sheep with missing ears | June 2015
Written by: Bob McKinnon
"We were contacted by one of our local sheep farmers regarding a number of sheep that had lost their ears. He believed he had lost up to 50 sheep and had counted 35 bodies" ... Read More

 

Exertional rhabdomyolysis in ewes | July 2013
Written by: Elizabeth Braddon
Many animals such as horses, pigs and various species of wildlife suffer from exertional rhabdomyolysis or capture myopathy - but it is not normally encountered in sheep. This is a case report in which 10 of 600 ewes died after being harassed by dogs ... Read More


Prolapse

 

Rectal prolapse in a young steer | March 2011
Written by: Bob Templeton and Rod Reece
The steer was in store condition. The rectum, while prolapsed, was otherwise relatively normal. However, the liver was quite spectacular ... Read more


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Q Fever

 

An investigation into the serological evidence of Coxiella burnetii infection in beef cattle in the Lachlan Livestock Health and Pest Authority in NSW | September 2015
Written by: Nik Cronin
Q fever, caused by the organism Coxiella burnetii and is more frequently diagnosed in humans than some of the more commonly known zoonotic diseases ... Read More

  

Q Fever: A notifiable disease in humans | March 2011
Written by: Ian Lugton and Anthony Brown
EH Derrick first reported in 1937 on ‘Query Fever’. The disease first identified in Brisbane abattoir workers is now known as Q fever. Derrick sent the organisms isolated to McFarlane Burnet ... Read more


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Rabies

 

Cross-sectional disease surveillance and control: Rabies in Uganda as a case study | April 2013
Written by: Siobhan Mor
In this presentation I will share the highlights from the PMA Conference as well as the findings from our ongoing work on rabies in Uganda. Rabies provides a unique opportunity to consider proof of concept for cross-sectoral approaches to disease surveillance and control ... Read more

   

Rabies - a timely reminder | March 2012
Written by: Alan Taylor
More than 55,000 people (mostly in Africa and Asia) die of rabies each year - that equates to one person every ten minutes ... Read more

   

Rabies and Lyme Disease - challanges in disease control | March 2011
Written by: Matthew Ball
The control and eradication of animal diseases should be based on an understanding of their epidemiology and the methods available for their diagnosis, prevention and treatment ... Read more


Reproduction

 

Investigating a reproductive problem in a beef herd - when do you stop? | April 2013
Written by: Paul Freeman
The investigation of reproductive problems in beef cattle herds can be problematic. Rarely is suboptimal performance due to a single cause and the challenge in investigating problems is to be able to define the stages of the reproductive cycle when suboptimal performance is occurring ... Read more

 

Non infectious causes of reproduction wastage in sheep | March 2011
Written by: Greg McCann
The ewe is a short day breeder, which is to say that she normally has her strongest reproductive performance when daylight is decreasing. The optimal breeding period for the ewe ... Read more

 

Reproductive performance of a small Dorper flock in North-West NSW | January 2014
Written by: Libby Guest
Dorpers are promoted in Australia as being easy-care, drought-tolerant, fertile and productive. The aim of this study was to record the reproductive performance of a small Dorper flock on the plains of north-western NSW ... Read More


Respiratory disease

 

Ovine respiratory disorders - a global overview | Posted March 2016
Written by: Peter Windsor, Professor Emeritus
Throughout the world, the most common respiratory disorders of sheep are rhinitis/sinusitis and pneumonia, caused by a wide range of host-pathogen-environment (HPE) interactions that reflect the various sheep husbandry systems used in different countries ... Read More

 

Respiratory disease in small poultry flocks - differential diagnosis | April 2013
Written by: George Arzey
Considering that the avian respiratory system served dinosaurs well 175-250 million years ago, at a period when low environmental oxygen and high temperature affected the planet; this combination of flow-through ventilation and crosscurrent exchange allows birds to extract up to 160% more oxygen from the air than mammals ... Read more

 

Selected respiratory tract diseases of sheep in Spain | April 2013
Written by: Delia Lacasta
In part because of geography and in part because production systems are more intensive, respiratory diseases, while of some importance in Australia, are the most important cause of disease and mortality in Spanish sheep ... Read More


Rhinitis

 

Bacterial rhinitis in merino ewes | May 2007
Written by: Eliz Braddon
Severe nasal discharge with swollen nasal planes and upper lip, combined with ... Read More


Rinderpest

 

Vale rinderpest | June 2015
Written by: Dan Salmon
The extremely high morbidity and mortality of rinderpest resulted in it influencing many aspects of world history, not just agriculture, and was the main factor in transforming farriers into veterinarians ... Read more


Rumen development failure

 

Wet pasture and failure of rumen development | July 2012
Written by: Matt Ball
Between January and February 2012 owners of three independent beef herds reported "poor doing" beef calves. In each herd about 2-3% of calves were reported to be growing poorly ... Read more


Rumenal acidosis

 

Elevated aqueous humor D-lactate levels confirm rumenal acidosis in an autolysed lamb carcase | July 2017
Written by: Jeremy Rogers
Ocular fluid, brain and rumen observations can still be helpful sevearl hours after an animal has died, even when other tissues and organs are autolyzed. In this case acidosis was diagnosed in an autolysed lamb carcase ... Read more


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Salmonellosis

 

Salmonella abortion in dairy cattle | August 2010
Written by: Andrew Thompson
A full laboratory rundown on an abortion storm in a dairy herd ... Read more

 

Salmonella case in lambs | March 2011
Written by: Nik Cronin
This particular morning there were 15 dead animals in the sheep yards. This mob had arrived 1 week ago and were shorn but had not yet been vaccinated or drenched. The dead animals had evidence of a green, mucoid scour ... Read more

 

Salmonella mortality in extensive cattle herd | August 2010
Written by: Libby Read
An investigation into the deaths of 50 calves found after a wet period ... Read more

 

Salmonellosis in adult beef cattle | December 2011
Written by: Evelyn Walker
A beef producer lost 2 head of cattle just outside the Gulargambone area out of a mob of 100 in early June 2011. At least 14 others were unwell ... Read more

 

Suspect Salmonellosis case study | December 2011
Written by: Matthew Ball
In late October 2011 a dairy/beef producer at Rous (between Ballina and Lismore) reported the deaths of two Australian Illawarra Shorthorn (AIS) mature cows from a mob of 35 cows and calves ... Read more


Sarcoptic mange

 

Sarcoptes scabei var suis | July 2012
Written by: Kylie Greentree
Seven piglets, five weeks of age, had very thickened skin, alopecia, severe rubbing and shaking ears, with multiple scabs mostly over head and forequarters ... Read more

 

Suspect Sarcoptes infection in sheep and humans | March 2012
Written by: Phillip Kemsley
The owner reported hair loss around the eyes and ears in a 17 month old Damara x Dorper ewe ... Read More


Scabby mouth

 

Case of scabby mouth in lot fed lambs | Posted October 2013
Written by: Brigit Pitman
In March 2013 Scabby Mouth spread through 1500 crossbred lambs shortly after they were introduced into an on-farm feedlot. Around 50% of lambs in all five pens were affected with lesions at the height of the outbreak ... Read More

 

Contagious ecthyma (scabby mouth / orf) in young rams, an unusual presentation | December 2012
Written by: Libby Guest
The rams did not have the typically lesions affecting the mucocutaneous junctions of the mouth and nose but had hyperkeratotic, proliferative papillary projections on the ears and dorsal cranium ... Read More

 

Scabby mouth (orf) in vaccinted sheep | August 2008
Written by: Bruce Watt
Scabby mouth is a common disease of Australian sheep. On properties that vaccinate, subsequent disease is rare... Read More

 

Two outbreaks of scabby mouth (orf infection) in small ruminants on the Central Tablelands of NSW | Posted August 2017
Written by: James Tamone and Bruce Watt
Scabby mouth, a viral disease of sheep and goats caused by a Parapox virus endemic to Australia, is responsible for a range of pox like diseases that produce proliferative crusting lesions around mucocutaneous junctions ... Read More


Schmallenberg virus

 

Schmallenberg virus - what is all the fuss about? | April 2013
Written by: Peter Kirkland
Animal health authorities were astounded by the incursion of bluetongue viruses into Western Europe. However, few expected another vector borne virus to emerge so quickly and close to the focus of emergence of BTV-8 ... Read more


Screwworm

 

Screwworm – risk and recognition | March 2011
Written by: Peter James and Peter Green
The Old World screw-worm, is considered to be the most serious exotic insect pest threatening Australia’s livestock industries and is endemic in a number of our closest neighbouring countries ... Read more


Sheep and goat pox

 

Sheep and goat pox | June 2015
Written by: Bruce Watt and Colin Scrivener
Capripoxvirus genus viruses generally cause host specific infections in sheep (sheep pox), goats (goat pox) and cattle (lumpy skin disease). However, some isolates infect both sheep and goats. Sheep and goat pox (SGP) infections cause high morbidity and mortality ... Read more


Sheep measles

 

Revisiting the transmission of Taenia ovis (sheep measles) in Australia | June 2015
Written by: David J Jenkins
The importance of T. ovis is financial losses for the Australian sheep meat industry through downgrading and condemnation of meat and hearts and is a potential impediment to international trade of sheep meat ... Read more


Sporadic bovine encephalomyelitis

 

Sporadic Bovine Encephalomyelitis case in Hume LHPA | August 2010
Written by: Brigit Pitman
Histopathology on a male hereford calf solves a calf mortality problem ... Read more


Sporadic bovine leucosis

 

Sporadic bovine leucosis in a calf | March 2012
Written by: Libby Read
A 3-4 month old calf from a mob of 40 cows and calves developed a fever and enlarged submandibular lymph nodes and grazing lush native pasture with no introductions to the group ... Read more


Squamous cell carcinoma

 

Ocular squamous cell carcinoma in merino ewes | November 2016
Written by: Ella Duldig and Dr Jeremy Rogers
Cancer eye is the most common form of ocular neoplasia in sheep and cattle with lesions typically occuring on the eye and eyelids. The cause is likely multifactorial, but predisposing factors may include ... Read More


Streptococcus suis

   

Streptococcus suis infection in humans - an emerging disease? | August 2008
Written by: Eliz Braddon
Strep suis is commonly found in pigs. What of the people who work with them ... Read more


Sudden death

 

Fatal intestinal torsion in a ram post-shearing | October 2013
Written by: Brigit Pitman
An unexpected death in a ram after sedation and shearing was investigated to determine the cause of death, the diagnosis at autopsy was that death was due to intestinal torsion ... Read More

 

Very sudden death in White Suffok ram lambs | May 2007
Written by: Harry Suddes
Sixteen, otherwise healthy, lambs found dead in a pile ... Read More


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Tetanus

 

Tetanus in goats | in December 2012
Written by: Matt Ball
In September 2012 at least eight goats, including a number of kids, had been found dead with no obvious signs of disease prior to their death. In early October two live goat kids of approximately eight weeks of age were found in lateral recumbency, unable to stand ... Read more


Theileriosis

 

Anaemia caused by theileriosis | July 2012
Written by: Ted Irwin
Benign theileriosis has been causing increasing occurrences of disease on the coast and inland in NSW. It is a protozoal organism spread by ticks that parasitises the blood cells leading to anaemia in cattle. ... Read more

 

Benign bovine theileriosis - a questionnaire of 64 affected properties | March 2011
Written by: Graham Bailey
Benign bovine theileriosis (BBT) caused by Theileria sergenti/T. buffeli/T. orientalis complex is a tick borne disease occurs throughout the world ... Read more

 

Benign theileriosis in beef calves | December 2011
Written by: Steve Eastwood
In October 2011, a 400 cow beef breeder enterprise at Yarrowitch on the eastern escarpment of the Northern Tablelands, had four calves, aged 12 weeks, die within a week ... Read more

 

Benign theileriosis on the Mid North coast | March 2011
Written by: Ian Poe
Common presentations of disease include late term abortions, stillbirths, dystocia, weakness, lethargy and death ... Read more

 

Bovine anaemia due to Theileria orientalis in homebred beef calves | December 2016
Written by: Ian Poe
A protozoan red blood cell parasite of cattle, historically referred to as Theileria buffeli, has been present in Australia for many years ... Read more

  

Exotic theileriosis | March 2012
Written by: David Thomson
Various forms of Theileriosis are widely recognized as possibly the most economically significant vector-borne diseases affecting ruminant livestock production worldwide ... Read more

 

PositiveTheileria blood smears. What does it mean? | April 2013
Written by: Steve Eastwood
The increase in incidence of Theileriosis in beef cattle over the past few years has realised a need to better understand the underlying prevalence of Theileria spp. in beef cattle and allow the clinician to interpret laboratory results in context ... Read more

 

Prevalence and effect of Theileria infection in NSW South Coast cattle herds: a targeted surveillance study | July 2012
Written by: Alissa Burney and Ian Lugton
Theileria are protozoal blood parasites transmitted between livestock by ticks and generally considered a benign disease in Australia. This is in contrast to the Theileria spp. present overseas, which can cause significant disease and high mortalities ... Read more

 

Quantitative PCR as a tool for the diagnosis of bovine theileriosis | March 2015
Written by: Cheryl Jenkins and Daniel Bogema
The pathogenic genotypes of bovine theileriosis have become enzootic in herds over large areas of the eastern seaboard and are now commonly observed in subclinical as well as clinically-affected animals. Recent developments in quantitative PCR technology provide further aids to laboratory diagnosis ... Read more

 

Theileria and pneumonia in calves | February 2011
Written by: Matthew Ball
In this syndrome adult cattle were typically anaemic, jaundiced and may abort. A second syndrome has been seen in calves ... Read more

 

Theileria in cattle - a case presentation | May 2014
Written by: Ted Irwin
The effects of the Ikeda strain of Theileria have been well documented in the past few years outlining the most susceptible classes of cattle and the likely clinical signs. This case highlights that symptoms are not always classic and cases may present as neurological in appearance ... Read more

 

Theileria research findings | April 2013
Written by: Graeme Eamens and Cheryl Jenkins
In Australia, bovine theileriosis is caused by the haemoprotozoan Theileria orientalis that infects erythrocytes, and can result in clinical signs of lethargy, fever, anaemia, jaundice, abortions and mortalities in naive cattle. Many outbreaks of clinical disease have occurred in NSW since 2007 ... Read more

 

Theileriosis research on the mid north coast of NSW 2011 | April 2013
Written by: Allan Glassop and Jim Kerr
This article describes field research to record the progress and outcome of theileria infection in a group of ten dairy heifers introduced into a Taree dairy herd from South Australia in October 2011 ... Read more

 

Theileriosis causing anaemia | December 2011
Written by: Ted Irwin
Benign theileriosis has been causing increasing occurrences of disease on the coast and inland in NSW. It is a protozoal organism spread by ticks that parasitises the blood cells... Read more

 

Theileria transplacental transmission | March 2015
Written by: Shayne Fell, Cheryl Jenkins, Jade Hammer, Gaye Krebs and Emma Swilks
A number of calves in this study showed evidence of infection with T. orientalis based on blood smears as early as four days of age. This led to the proposal that infection can be passed to the calf in-utero which is a potential source of continued transmission of disease within the herd ... Read more


Tick borne diseases

 

Tick borne diseases of sheep | August 2010
Written by: Bruce Watt and Michelle Dennis
An overview of diseases spread by ticks in sheep that Australian veterinarians ... Read More


Tick fever

 

Review of tick fever outbreaks in NSW 2011-2012 | April 2013
Written by: Paul Freeman
NSW has been using regulation to restrict the entry of cattle tick into NSW for over 100 years as a means of controlling outbreaks of tick fever. Outbreaks of tick fever occur periodically in NSW ... Read more

 

Tick fever | July 2012
Written by: Phillip Kemsley and Jessica Hamilton
Tick fever is an important disease of cattle, caused by a blood parasite, spread by the cattle tick and producing severe clinical signs including fever, depression, neurological signs and haemoglobinuria, often accompanied by jaundice and anaemia... Read more


Toxic hepatopathy

 

Toxic hepatopathy, challenges in diagnosis | August 2010
Written by: Dr Melinda Gabor
Histopathology of the liver from various toxins are discussed in minute detail... Read more


Toxoplasmosis

 

Pilot survey of the prevalence of serum antibodies against Toxoplasma gondii and risk factors for transmission of T gondii to sheep in the Tumbarumba Shire of NSW | March 2011
Written by: Rosalie Harvey and Helen McGregor
Sheep are more commonly infected by T. gondii than other livestock such as cattle or pigs ... Read more


Trichomoniasis

 

Trichomoniasis eradication - a case study | August 2010
Written by: Andrew Biddle
How an enterprise eradicates and develops a strategy to keep out infectious infertility ... Read more


Trypanosomes

        

Trypanosomes - A millstone for the developing world and an insidious threat to Australian livestock | March 2015
Written by:Bruce Watt
Pathogenic forms of trypanosomes are the major constraint to livestock production in much of Africa and also cause losses in South America and Asia. In Australia, the species found in livestock are not obviously associated with disease ... Read more


Tularaemia

       

Tularaemia
Written by: Kate Wingett
Tularaemia is a zoonotic disease caused by Francisella tularensis, is an OIE-listed disease and is currently an emergency animal disease in NSW and Australia ... Read more


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Urolithiasis

 

Urolithiasis due to an unbalanced diet in a Spanish lamb feedlot | March 2012
Written by: Carlos Alcay, Luis Miguel Ferrer, Juan Jose Ramos, Marta Ruiz de Arcaute, Marta Borobia and Delia Lacasta
In recent months (September-November, 2011) there have been sporadic deaths in feedlot lambs, a similar outbreak in 2010 caused a morbidity of 2% and mortality of 1% ... Read More

 

Urolithiasis in feedlot lambs | October 2014
Written by: Eliz Braddon
On examination approximately 6 animals showed signs of illthrift, a tucked-up appearance and stood on their own. Closer inspection showed swelling in the ventral abdominal area and in a few cases, a necrotic draining wound was found ventral ... Read More

 

Urolithiasis in Lot-fed Crossbed Wethers on Commercial Pellets | August 2007
Written by: Bruce Watt
Deaths among fed-lot crossbred wether lambs with swellings in the prepuce and ... Read More


Uterine torsion

 

Uterine torsion and rupture in a full term multiparous ewe | October 2014
Written by: Bruce Watt
This case is of interest in that the ewe suffered two potentially fatal uterine accidents simultaneously. While this ewe died from blood loss, an undiagnosed uterine torsion would have also led to foetal death, septicaemia and death of the ewe ... Read More


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Vagus indigestion

 

Vagus indigestion in an angus cow | September 2012
Written by: Bruce Watt
Vagus indigestion is an insidious, chronic dysfunction of the ruminant (but usually bovine) forestomachs, leading to reduced outflow and therefore chronic bloat, inappetence and weight loss ... Read more


Vibriosis

 

Bovine vibriosis (campylobacteriosis) causing mid term abortions in a beef herd | June 2015
Written by: Belinda Edmonstone
Vibriosis causes serious economic loss in beef herds through reproduction wastage. An investigation conducted from 1992-94 showed that 46% of cases of infertility in cattle in NSW was caused by vibriosis ... Read more


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Wallerian degeneration

 

Wallerian Degeneration Caused by Bovine Ephemeral Fever in a NSW North Coast Dairy Cow | Posted September 2016
Written by: Liz Bolin
A jersey cow definitively diagnosed as having Bovine Ephemeral Fever was also found to have evidence of a mild, multifocal neuropathy with Wallerian degeneration ... Read more


White muscle disease

 

Subacute nutritional muscular distrophy (white muscle disease) in angus calves | March 2012
Written by: Bruce Watt and Tanya Rajkumar
Subacute nutritional muscular dystrophy is a myodegenerative disease caused by selenium deficiency. It affects both calves and lambs, targeting the limb muscles, while the acute form of the disease affects the myocardial and respiratory muscles ... Read more


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Yersiniosis

 

Pathology and epidemiology of Bovine Yersiniosis | August 2010
Written by: Matt Ball
A full rundown on the history of yersiniosis in cattle on the north coast of NSW following periods of ... Read more

 

Yersinia pseudotuberculosis enteritis in adult sheep | Posted March 2016
Written by: Nigel Gillan
While Yersinia enteritis is known to occur in adult sheep, most reports focus on the disease in younger animals, and recent work has sought to clarify the role of Y. pseudotuberculosis and Y. enterocolitica in a weaner scours syndrome ... Read More

 

Yersiniosis in cattle | September 2012
Written by: Phillip Kemsley
Cases of yersiniosis in cattle are seen each winter on the north coast. Ten cases were investigated by the author in the winter of 2012 over a 10 week period ... Read more

 

Yersiniosis or more? | October 2011
Written by: David Thomson
Losses involve both sporadic individual deaths and multiple-death outbreaks, and are also sometimes associated with at least some evidence of diarrhoea within affected mobs ... Read more


Miscellaneous articles

   

Adapting livestock production to the climate in 2030 | March 2011
Written by: Brian Cumming
NSW Industry and Investment has been running the NSW component of a national project to look at how producers might adapt their production systems to the anticipated change in climate from 2016 to 2045 ... Read more

 

Adverse reaction to Tetravet flexi-dose Oxytetracycline PVP injection | June 2011
Written by: Tony Morton
With the withdrawal of penicillin/streptomycin from the market there has been a move to the use of long-acting tetracyclines ... Read More

 

Alpacas and other camelids—tips I have learnt | January 2014
Written by: Diane Ryan
Alpacas are different in many ways from traditional livestock industries.  The terminology used with this species is based on both its origin (South America) and aspects of its physiology and behaviour ... Read more

 

Bat brains, biosecurity, and beyond | Posted April 2017
Written by: P Shearer, H Bender and M Gabor
Bats are a natural host and vector of many zoonotic diseases, including the enzootic Australian Bat Lyssavirus (ABLV) and Hendra virus, and the exotic Nipah, Ebola, Melaka, and Marburg viruses ... Read more

 

Clostridium sordellii, A traditional and emerging pathogen | February 2015
Written by: Bruce Watt and Patrick Staples
Clostridium sordellii is one of the anaerobes responsible for malignant oedema, a wound infection of sheep, cattle and other species that develops in the subcutaneous fascia and causes an acute fatal toxaemia ... Read More

 

Cows and the big city - A survey into the nature and risks of beef cattle in Sydney | March 2015
Written by: Dr Matthew Ball
Beef cattle herds in Greater Sydney are non-commercial. The main motivations for cattle ownership are to manage pasture and weeds, secondary income and as a hobby. A relatively high number are used for home meat or milk consumption ... Read more

 

Disease control to improve sheep carcase and carcase parts yield | Posted April 2017
Written by: Kate Wingett, Margaret Allman-Farinelli and Robyn Alders
The ABS only publish data on livestock products that are passed for human consumption, leaving an undetermined but significant quantity of nutrient-dense, energy-dense sheep meat and offal condemned in processing or used as animal feed ... Read More

Elizabeth Macarthur agricultural institute, boffins and bugs | June 2015
Written by: Dr Jef Hammond
EMAI is the NSW Department of Primary Industries Centre for Biosecurity and Centre of Excellence for Animal and Plant Health. First opened in 1990, EMAI plays a vital role in the protection of the State’s $9 billion primary industries sector, the community and environment ... Read more

 

Goat shoot operations collecting animal health information | August 2010
Written by: Keith Hart
The serendipidous collection of samples from goats during a cull operation found that ... Read more

 

Greying of Angus cattle | March 2012
Written by: David Thomson
A property owner reported generalized loss of hair coat and greying of hair coat colouring affecting several amongst a group of mature Angus cows grazing high-production, kikuyu-clover based floodplain pastures ... Read more

 

National sheep health monitoring project | June 2015
Written by: Samantha Allan
Monitoring occurs in both export and domestic processing plants across Australia. Reports are collected on a range of conditions identified by producers, processors and state departments as having a significant economic impact on sheep production ... Read more

  

Prevalence of methicillin-resistant Staphylococcus aureus (MRSA) carriage among pet dogs in remote NSW | Posted April 2017
Written by: Gemma Ma, Jacqui Norris and Michael Ward
A survey of dogs and cats living in the communities of Bourke, Enngonia, Brewarrina, Goodooga and Weilmoringle in remote north-west NSW was conducted in September and October 2016 to estimate the prevalence of MRSA carriage ... Read more

 

Ram semen culture results | August 2010
Written by: Greg McCann
Culture results from ram semen indicate a range of organisms found, including ... Read More

 

Reflections of an ethologist | April 2013
Written by: Geoff Green
The majority of our work was with sheep with excursions into research on cattle and wombats. Most of our sheep work was done with merinos with some small projects branching into work with the British breeds and merino crossbreds ... Read More

    

Review of a regional disease investigation surveillance system | March 2011
Written by: Matt Ball, Kate Finlayson and Paul Freeman
Animal health policy makers need to be given adequate information about the nature of the animal disease monitoring and surveillance system of their regions.  Such information can be used to make decisions ... Read more

    

Science and research within the Livestock Health and Pest Authorities: a few tips from experienced practitioners | April 2013
Written by: Ian Lugton and Greg Curran
As District Veterinarians you will always be in the best position to do something significant, a research project perhaps, that someone else can’t easily do or would find more difficult to achieve. All good research starts with field observations, which puts field veterinarians in the box seat ... Read more

The North Coast LHPA and emerging disease detection - risk analysis by a worked example | July 2012
Written by: Matt Ball
The disease investigation service of the North Coast Livestock Health and Pest Authority (NCLHPA) is a busy and capable component of the regions livestock disease surveillance system ... Read more

 

Thymic tissue found extrathoracically in Dorper lambs | August 2010
Written by: Libby Read
Submadibular, bilateral swellings appear in small numbers of Dorper lambs ... Read More

Tips and tools for decision making and clinical / field trial planning - sample size | March 2011
Written by: Helen McGregor
One of the main aims in planning a clinical trial is to provide ‘conclusive evidence of efficacy’. However, as field vets and scientists we should also recognise ... Read more

 

Trial of treatment options for feedlot lambs | March 2011
Written by: Belinda Edmonstone and Greg Curran
A lamb feedlot operator was considering how best to prepare and support lambs being feed lotted. It was agreed that the best approach would be run a trial to see how lambs responded to each treatment regimen ... Read more

Veterinarian attitudes towards infection control practices | April 2013
Written by: Navneet Dhand, Karen Dowd, Mel Taylor, Claire Hooker and Jenny-Ann Toribio
Animal health professionals have inherently high risks of exposure to zoonotic diseases. They are likely to be amongst the first people to encounter animals infected with zoonotic pathogens and to engage in high-risk interactions with them ... Read more

  

The veterinarian-horse owner relationship in Australia | Posted April 2017
Written by: Charis Hii, Kathrin Schemann, Melanie Taylor, Jenny-Ann Toribio, Anke Wiethoelter, Nicole Schembri, Kate Sawford, Nina Kung, Hume Field, Barbara Moloney, Therese Wright and Navneet Dhand
The veterinarian-horse owner relationship is considered very important for animal welfare, biosecurity engagement programs, and passive surveillance ... Read more

Veterinary diagnostics - the future: more than the laboratory | March 2012
Written by: Adrian Philbey
We are moving into the age of molecular diagnostics, with potential for high throughput, rapid turnaround and highly specific molecular detection of pathogens in veterinary species ... Read more

  

Water, water everywhere and not a spot to stand | March 2011
Written by: Libby Read
Since the beginning of December 2010, five river systems within the NWLHPA have flooded requiring significant responses. Flooding in these river systems is generally widespread and slow moving ... Read more

 

Weaner management project with Pfizer Eryvac - findings after the first year | August 2008
Written by: Bruce Watt et al
High mortality and poor preformance in merino lambs is a well documented problem ... Read More

                 

Wildlife health incidents and investigations | Posted April 2017
Written by: Claire Harrison
Wildlife health incidents are inherently complex; complicated with difficulties such as remote locations, lack of accurate ecological data, cross-jurisdictional or cross-agency responsibilities ... Read more


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