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


CATTLE

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A case of abortion in cattle due to infection by Salmonella chester | Posted September 2011
Written by: Andrew Biddle, District Veterinarian New England LHPA
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

A case of Lythrum hyssopifolia (lesser loosestrife) poisoning in cattle | Posted March 2011
Written by: Tony Morton, District Veterinarian, Hume LHPA
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

Actinobacillosis in dairy heifers | Posted July 2012
Written by: Eliz Braddon, Senior District Veterinarian, Lachlan LHPA
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

Abomasal ulceration | Posted September 2011
Written by: Andrew Biddle, District Veterinarian New England LHPA
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

Acorn calf syndrome | Posted August 2007
Written by: Chloe Hawthorne, Intern at RLPB Young
A producer finds a dead calf that looks more bulldog than calf ... Read more

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

Acute bracken toxicity in beef cattle | Posted July 2012
Written by: Ian Poe, District Veterinarian Kempsey Mid Coast LHPA
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

An apparently new syndrome of chlamydia infection of cattle in the southern Riverina | Posted April 2013
Written by: David Petersen, Finley Veterinary Clinic
Dan Salmon Riverina Livestock Health and Pest Authority
Matthew Petersen, Finley Veterinary Clinic

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. Morbidity has usually been less than 5%. Affected animals have presented as febrile and lame with variable swelling and pain in most joints ... Read more

Anaemia caused by theileriosis | Posted July 2012
Written by: Ted Irwin, North West Livestock Health and Pest Authority
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

Arsenic and young cattle don’t mix | Posted March 2011
Written by: Eliz Braddon, Senior District Veterinarian, Lachlan LHPA
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

Atypical chorioptic mange in cattle | Posted October 2010
Written by: Libby Read, DV Narrabri / Walgett & Shaun Slattery SDV Northwest LHPA
A small herd of 16 adults and 2 calves developed intense pruritis in association with nodular skin lesions ... Read more


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Beef measles, should we bother about looking for it in Australian abattoirs? | Posted August 2015
Written by: David J Jenkins, School of Animal and Veterinary Sciences, Charles Sturt University, Wagga Wagga
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

Benign bovine theileriosis - a questionnaire of 64 affected properties | Posted March 2011
Written by: Graham Bailey, Industry and Investment NSW, Orange
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 | Posted December 2011
Written by: Steve Eastwood, Senior District Veterinarian, New England LHPA
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 | Posted March 2011
Written by: Ian Poe, District Veterinarian, Mid Coast LHPA, Kempsey
Common presentations of disease include late term abortions, stillbirths, dystocia, weakness, lethargy and death ... Read more

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

Bobby calf welfare at Bega saleyards | Posted March 2012
Written by: Ian Lugton, District Veterinarian, SELHPA, Bega and Camellia Leong, Veterinary Intern, University of Sydney
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

BJD in a Market Assurance Program (MAP) herd (1) |Posted December 2011
Written by: Matt Ball, District Veterinarian, Lismore
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, District Veterinarian, Lismore
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 | Posted July 2013
Written by: Marta Ramis, Monica Espada and Delia Lacasta, Veterinary Faculty of Zaragoza. Spain
One Holstein cow from a dairy farm near the Veterinary Faculty of Zaragoza was referred to the Ruminant Clinical Services. The farmer advised that the cow was found to have problems with fertility, despite synchronization treatments and artificial insemination. Signs of clinical BJD were observed when the affected cow developed a profuse liquid diarrhoea despite absence of other clinical signs such as pyrexia or inappetance ... Read more

Blackleg causing acute myocarditis in a Hereford cross calf | Posted December 2012
Written by: Bruce Watt (Tablelands Livestock Health and Pest Authority, Bathurst) and Steven Hum (State Veterinary Diagnostic Laboratory, Menangle)
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 | Posted December 2012
Written by: Bruce Watt (Tablelands Livestock Health and Pest Authority, Bathurst),
Kim Bensch and Michelle Monaghan (Lithgow Veterinary Hospital)

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 | Posted March 2011
Written by: Keith Hart, SDV Cumberland
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

Botulism causing high mortality in a small beef herd | Posted December 2016
Written by: Nigel Gillan, District Veterinarian, Mudgee
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

Botulism in a dairy herd | Posted March 2015
Written by: Helen Schaefer, South East Local Land Services, Bega
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

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

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

Bovine besnoitiosis, an emerging disease | Posted April 2013
Written by: Bruce Watt (Tablelands Livestock Health and Pest Authority)
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

Bovine enzootic haematuria with multiple neoplasms in a mature angus cow | Posted December 2016
Written by: Amy Masters, Central Tablelands Local Land Services, Orange and Pat Shearer, Elizabeth Macarthur Agricultural Institute
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 Johnes Disease - Case report | Posted August 2008
Written by: Phil Kemsley, DV RLPB Casino
A report into the nature of spread of Bovine Johnes Disease in a coastal dairy environment ... Read more

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

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

Bovine respiratory disease outbreak in selenium deficient cattle in NSW | Posted March 2011
Written by: Erin Davis, veterinary undergraduate CSU, & Dave Gardiner, District Veterinarian, Central North LHPA, Mudgee
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

Bovine vibriosis (campylobacteriosis) causing mid term abortions in a beef herd | Posted June 2015
Written by: Belinda Edmonstone, District Veterinarian, Central West LLS, Forbes Office
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 – potential for control and eradication in Australia | Posted April 2017
Written by: Kate Sawford, Braidwood, South East Local Land Services and Genevieve Hannaford, Charles Sturt University
Bovine viral diarrhoea virus (BVDV) is the most prevalent infectious disease of cattle worldwide. 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 | Posted August 2007
Written by: Mike Healy, Genevieve Chin (Vet Interns, Syd Uni) and Ian Lugton (SDV, SE LHPA)
An analysis of all the impacts of the introduction of BVDV into a dairy herd ... Read more

Bracken fern poisoning in heifers | Posted October 2013
Written by: Ainslie Lund, District Veterinarian, North Coast LHPA, Grafton
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

A case of possible ‘Bronopol’ poisoning in calves | Posted November 2016
Written by: J Rogers BVSc, Senior veterinary Officer, Flaxley Agriculture Centre, PIRSA
Bronopol is a commonly used preservative in milk that is added to fresh milk prior to storage and testing for a range of production parameters. After the milk has been tested, it is collected by farmers who feed it to livestock ... Read more

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


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Calf diptheria in Hereford calves | Posted December 2011
Written by: Bruce Watt, Tablelands Livestock Health and Pest Authority, Bathurst
Two calves approximately 2 months old in a mob of 25 Hereford cows with calves at foot were noticed to be sick ... Read more

Cardiomyopathy in an Angus heifer | Posted December 2012
Written by: Bruce Watt (Tablelands LHPA, Bathurst) and Steven Hum (State Veterinary Diagnostic Laboratory, Menangle)
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

A case of blue-green algae poisoning in cattle | Posted May 2016
Written by: Ted Irwin District Veterinarian, North West Local Land Services, Warialda
Blue-green algal build up in farm dams and other low-flowing wet areas is not uncommon and can cause significant losses ... Read More

Cattle nematodes on the mid-north coast of NSW | Posted March 2016
Written by: Jim Kerr, District Veterinarian, Paterson
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 | Posted April 2013
Written by: Stephen Love, Veterinarian / State Worm Control Coordinator, NSW DPI Armidale
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

Changes in the epidemiology of bovine leptospirosis in the Narrabri district from 1991 to 2012 | Posted April 2013
Written by: Shaun Slattery, Senior District Veterinarian, North West LHPA
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

Classical epitheliogenesis imperfecta in a new born calf | Posted January 2014
Written by: Robert Templeton, District Veterinarian Braidwood SELLS
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

Clinical observations on teat and udder damage to beef cattle after the Ournie-Tooma fire of 17th December 2009 | Posted March 2011
Written by: Brigit Pitman, District Veterinarian Hume LHPA, David Hall BVSc,
Walwa Veterinary Clinic and Chris Miller BVSc Corryong Veterinary Services

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

Coliform abortion in a heifer | Posted December 2011
Written by: Bruce Watt, Tablelands Livestock Health and Pest Authority, Bathurst
An 8kg foetus was aborted from one of a mob of 28 Hereford cross heifers ... Read more

Coliform bacteraemia, with meningitis and other sequelae, in a neonatal beef calf | Posted December 2016
Written by: Ian Poe District Veterinarian, Kempsey
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

Copper deficiencies in North Coast Hereford cows | Posted January 2014
Written by: Ainslie Lund, District Veterinarian, Grafton
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

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

Cows and the big city - A survey into the nature and risks of beef cattle in Sydney | Posted March 2015
Written by: Dr Matthew Ball, Virbac Animal Health, 14 Ashland St, Alstonville NSW 2477
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

Curved rice flower (Pimelea curviflora) associated with deaths in cattle in the Riverina | Posted October 2014
Written by: Gabrielle Morrice, Riverina Local Land Services, Narrandera
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

Cysticercus bovis: background to the NSW program and review of cases | Posted April 2017
Written by: Graham Bailey, Cattle Health Coordinator, NSW Department of Primary Industries, Orange
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


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Dermatitis in angus heifer weaners and angus cows grazed on mixed vetch pastures | Posted August 2015
Written by: Colin Peake, DV Hay, Riverina LHPA and CSU Vet students 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

Dermatophilosis in weaner cattle | Posted April 2011
Written by: Libby Read, District Veterinarian, North West Livestock Health and Pest Authority
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

Developmental duplications (DD) in Angus calves | Posted 4 December 2013
Written by: Laurence Denholm, Principal Policy Analyst, Trade and Investment NSW and Lisa Martin, District Veterinarian, New England LHPA
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

Diarrhoea in calves: advances in research and diagnosis | Posted March 2012
Written by: Andrew Thompson, Peter D. Kirkland, John House, Paul Sheehy, Alison Gunn (Faculty of Veterinary Science, University of Sydney and NSW Department of Primary Industries, Elizabeth Macarthur Agricultural Institute, Menangle)
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

Distal limb necrosis in a hereford calf | Posted March 2011
Written by: Bruce Watt, Tablelands Livestock Health and Pest Authority and Patrick Staples, State Veterinary Diagnostic Laboratory, EMAI, Menangle
Distal limb necrosis is occasionally encountered secondary to septicaemia, most notably from Salmonella, and from the ingestion of fungal toxins ... Read More

‘Dummy’ calves - a BVDV syndrome | Posted September 2011
Written by: Matt Ball- District Veterinarian Lismore and Adrian Philbey, Laboratory Leader, State Veterinary Diagnostic Laboratory
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


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Endemic salmonellosis | Posted September 2012
Written by: Matt Ball, Senior District Veterinarian, North Coast LHPA
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

Entry and establishment of QLD Cattle tick to the North Coast of NSW through saleyard purchasing: a risk analysis for an uncertain future | Posted July 2012
Written by: Matt Ball, Senior District Veterinarian, North Coast LHPA and Paul Freeman, Regional Veterinary Officer, NSW DPI
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

Eradication of bovine johne’s disease using risk assessments | Posted August 2015
Written by: Gabrielle Morrice, Riverina LLS (Narrandera)
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, but had been allocated the same PIC to reduce the property to property transfer requirements caused by multiple movements between them ... Read more

Eradication of enzootic bovine leucosis in national dairy herd | Posted April 2013
Written by: Dr Diane Ryan, Department of Primary Industries, Elizabeth Macarthur Agricultural Institute
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

Eradication of johne’s disease from a beef herd | Posted June 2015
Written by: Dan Salmon, Regional Veterinarian, Deniliquin
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

Ethics of grazing livestock—a brief overview | Posted June 2015
Written by: BR Watt, Tablelands Livestock Health and Pest Authority (now Central Tablelands Local Land Service), Bathurst NSW
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


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Facial eczema in cattle - FMD excluded | Posted December 2011
Written by: Kylie Greentree, District Veterinarian, Cumberland LHPA
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, South East Local Land Services, Bega
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

‘Failure to feed’ RSPCA welfare case: lessons | Posted March 2012
Written by: Shaun Slattery, Senior District Veterinarian, North West LHPA
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

Fascioliasis and severe worm burdens in young calves | Posted May 2012
Written by: Jack Neville-Towle, Sydney University Intern; Matthew Ball, DV North Coast LHPA
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

Fatal perforation of the reticulum and diaphragm caused by a cow eating a kangroo tibia | Posted December 2011
Written by: Derek Lunau, District Veterinarian, North West LHPA
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

Field pea mania (suspected) | Posted September 2012
Written by: Dr Jillian Kelly, Central West LHPA, Coonamble & Nyngan
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 | Posted September 2012
Written by: Joanne Taylor, Year 5, University of Queensland & Shaun Slattery, SDV North West LHPA
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 | Posted April 2013
Written by:Ted Irwin, District Veterinarian, North West LHPA
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

FMD control in the Mekong region using village-based approaches to vaccination and biosecurity | Posted March 2012
Written by: Peter Windsor, Faculty of Veterinary Science, University of Sydney
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

Foot and mouth disease: A diagnostic challenge? | Posted March 2015
Written by: Steve Eastwood, District Veterinarian, Northern Tablelands LLS, Armidale
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

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

Foreign fevers – Rift Valley fever, East Coast fever and classical swine fever | Posted April 2017
Written by: Nigel Brown, Northern Tablelands Local Land Services, Glen Innes
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. This paper aims to provide a summary of these diseases ... Read more


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Grass tetany (hypomagnesaemia) in beef cattle: a selective review | Posted March 2012
Written by: Bill Johnson, District Veterinarian, Goulburn
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

Greying of Angus cattle | Posted March 2012
Written by: David Thomson, DV Grafton
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

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


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Heliotrope poisoning - the steer in the dam | Posted August 2010
Written by: Tony Morton, DV Hume LHPA, Wagga Wagga
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 | Posted March 2012
Written by: Katie Boulton, final year veterinary student, University of Sydney and Bruce Watt, Tablelands Livestock Health and Pest Authority
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

Hepatic carcinoma as a cause of chronic weight loss and diarrhoea in a murray grey cow | Posted May 2014
Written by: Bruce Watt (Central Tablelands Local land Services, Bathurst)
and Rod Reece (State Veterinary Diagnostic Laboratory, Menangle)

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

Histophilosis cases in the North West LHPA | Posted March 2011
Written by: Libby Read, DV Narrabri-Walgett and Shaun Slattery, SDV North West LHPA, Narrabri
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 | Posted March 2012
Written by: Phillip Kemsley, District Veterinarian Casino
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

Hypomagnesaemic tetany in poll hereford cattle | Posted September 2012
Written by: Steve Eastwood, New England LHPA, Armidale
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


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Illthrift due to cardiac abscess | Posted March 2012
Written by: Andrew Biddle, District Veterinarian New England LHPA
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

Investigating a reproductive problem in a beef herd - when do you stop? | Posted April 2013
Written by: Paul Freeman, NWW DPI
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

Investigating risk factors for two histophilus outbreaks in grass-fed cattle | Posted April 2013
Written by: Bill Johnson, District Veterinarian, Goulburn office Tablelands LHPA
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

An investigation into the serological evidence of Coxiella burnetii infection in beef cattle in the Lachlan Livestock Health and Pest Authority in NSW | Posted September 2015
Written by: Nik Cronin, District Veterinarian Central West Local Land Services, Forbes
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


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Johne’s disease B, S or C strain type: What does it all mean? | Posted March 2015
Written by: IB Marshaand RJ Whittingtonb
aElizabeth Macarthur Agricultural Institute, NSW Department of Primary Industries, Menangle
bFaculty of Veterinary Science, University of Sydney

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


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Lack of response to trace mineral supplementation of sheep and cattle on the central tablelands of NSW | Posted June 2015
Written by: BR Watt, K Crawford and J Eppleston, Tablelands Livestock Health and Pest Authority (now Central Tablelands Local Land Service), 66 Corporation Avenue, Bathurst NSW
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

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

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

Lead poisoning in a mob of steers | Posted November 2015
Written by: Megan Davies, DV Narrabri and Ted Irwin, DV Warialda, North West Local Land Services
District veterinarians were called to investigate a single 8 month old Charolais x steer that was observed standing along a fence, separate to the mob. It was dull, depressed and able to be approached and touched ... Read more

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

Lightning strike in the Riverina | Posted March 2015
Written by: Rahul Shankar and Elizabeth Braddon, Riverina LLS, Young
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

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

Lung worm infestation in north coast beef weaners | Posted May 2014
Written by: Ainslie Lund, North Coast Livestock Health and Pest Authority, Grafton
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


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Mad cow disease in hindsight: Lessons learnt about disease control programs - A short literature review | Posted March 2015
Written by: Dermot McNerney, NSW State Coordinator TSE, NSW DPI, Dareton
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

Mannheimia haemolytica pneumonia in beef calves | Posted October 2013
Written by: Libby Guest, District Veterinarian, North West LHPA
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

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

Multiple agents causing respiratory disease and mortality in grass fed steers | Posted October 2014
Written by: Alexandra Stephens, SE LLS Yass
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

The myocardial form of nutritional muscular dystrophy in calves on clover dominant pastures | Posted December 2012
Written by: Bruce Watt (Tablelands Livestock Health and Pest Authority, Bathurst) and
Patrick Staples (State Veterinary Diagnostic Laboratory, Menangle)

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


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New concepts in the use of trace minerals in cattle | Posted July 2012
Written by: Ann Kenny Ph.D. Technical Product Manager, Virbac Australia
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

Nicotiana glauca toxicity in cattle | Posted July 2013
Written by: Tahleah Haddow, Veterinary Student, Charles Sturt University
Dermot McNerney, Veterinary Officer, Western Division NSW DPI

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

Novel case of fat toxicity in holstein-friesian cows following the consumption of dessicated coconut | Posted April 2013
Written by: Rebecca Hallett, CSU intern, Ben Schulz CSU intern,
Colin Peake DV Riverina Livestock Health and Pest Authority

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


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Oleander toxicity - What is your evidence? | Posted March 2011
Written by: Helen McGregor DV Hume
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

Ostertagiasis Type I in yearling steers | Posted August 2009
Written by: BR Watt, DV, Tablelands LHPA and J Eppleston, Project Officer, Tablelands LHPA
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 | Posted August 2009
Written by: Steve Eastwood, DV, New England LHPA
Type II ostertagiosis is an uncommon syndrome of synchronous maturation ... Read more

Oxalate poisoning in a beef herd grazing Setaria sphacelata - a case report | Posted March 2012
Written by: Will Hawker, Sydney University Intern
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


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Paralysis ticks in the New England, an emerging problem? | Posted April 2013
Written by: Lisa Martin, New England Livestock Health and Pest Authority, Tenterfield
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. The losses have usually occurred in scrubby uncleared timbered country ... Read more

Paspalum staggers (nervous ergotism) in steers | Posted September 2011
Written by: Bruce Watt, Tablelands Livestock Health and Pest Authority, Bathurst and Andrew Denman, Blayney Veterinary Hospital
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

Pathology and epidemiology of Bovine Yersiniosis | Posted August 2010
Written by: Matt Ball, Senior District Veterinarian, North Coast LHPA
A full rundown on the history of yersiniosis in cattle on the north coast of NSW following periods of ... Read more

Pestivirus (BVDV) economics and management options for NSW beef herds | Posted March 2015
Written by: Alex Stephens, District Veterinarian, South East LLS, Yass
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 | Posted August 2008
Written by: Bruce Watt, DV RLPB Central Tablelands
80-90% of herds show evidence of pestivirus exposure. In surveys in 2006 and 2008, all herds had evidence ... Read more

Phosphorus deficiency in cattle on the southern and central tablelands of NSW | Posted March 2011
Written by: Bill Johnson, District Veterinarian, Tablelands LHPA, Goulburn and Bruce Watt, Senior District Veterinarian, Tablelands LHPA, Bathurst
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

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

Polymenia (supernumerary limbs) in Angus calves | Posted December 2011
Written by: Dr Laurence Denholm, DPI NSW and Lisa Martin, District Veterinarian, New England LHPA and Andrew Denman, Blayney Veterinary Hospital
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

PositiveTheileria blood smears. What does it mean? | Posted April 2013
Written by: Steve Eastwood, Senior District Veterinarian, New England LHPA (Armidale)
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

Presumed false blackleg (malignant oedema) in Angus steers | Posted October 2014
Written by: Bruce Watt (Central Tablelands LLS) and
Erika Bunker (State Veterinary Diagnostic Laboratory, Menangle)

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

Prevalence and effect of Theileria infection in NSW South Coast cattle herds: a targeted surveillance study | Posted July 2012
Written by: Alissa Burney (Vet Intern, Sydney Uni) and Ian Lugton (SDV SELHPA)
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

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

Pyrrolizidine alkaloid poisoning in cattle - Case 2 | Posted August 2010
Written by: Bruce Watt, SDV, Tablelands LHPA (Bathurst) and
David Payten, ‘Kaloola,’ Darby’s Fall’s Road, Cowra

A case of ongoing mortalities in a cow herd months after summer grazing ... Read more

Pyrrolizidine alkaloid toxicity in dairy heifers | Posted January 2014
Written by: Katelyn Braine, Charles Sturt University Veterinary Student Intern, Riverina LHPA, Deniliquin and Dan Salmon, District Veterinarian, Riverina LHPA, Deniliquin
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


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Quantitative PCR as a tool for the diagnosis of bovine theileriosis | Posted March 2015
Written by: Cheryl Jenkinsa and Daniel Bogemaa,b
aElizabeth Macarthur Agricultural Institute, Camden NSW
bithree institute, University of Technology, Sydney, Broadway NSW

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


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Rape blindness (polioencephalomalacia) in cattle | Posted July 2013
Written by: Jillian Kelly, District Veterinarian, Central West LHPA, Coonamble & Nyngan
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

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

Reflections on selenium in the Lower Hunter | Posted March 2015
Written by: Digby Rayward, Regional Veterinarian, Hunter Local Land Services, Tocal
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

Relevance of historical anthrax data in current property risk assessments | Posted August 2015
Written by: Barbara Moloney, NSW DPI Orange and Dan Salmon, LLS Murray (formerly SDV Riverina)
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

Renal failure in calves caused by Amaranthus retroflexus | Posted September 2015
Written by: Lucienne Downs, District Veterinarian, Central Tablelands LLS and Charlotte Campbell, Final Year Veterinary Student, CSU Wagga Wagga
Ingestion of Amaranthus retroflexus is associated with two syndromes of poisoning in cattle: toxic nephrosis and methaemoglobinaemia due to nitrate-nitrite poisoning ... Read More

Review of cases submitted to investigate the cause of cattle deaths in western New South Wales (so called 3D syndrome) | Posted April 2015
Written by: Graham Bailey, Cattle Health Coordinator, NSW Department of Primary Industries, Orange and Erika Bunker, Veterinary Pathologist, NSW Department of Primary Industries, Menangle
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

Review of known knowledge about blackleg in the Tweed-Lismore region of NSW | Posted December 2012
Written by: Lydia Poad, Veterinary intern, University of Sydney and Matt Ball, Senior District Veterinarian, Lismore
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

Review of tick fever outbreaks in NSW 2011-2012 | Posted April 2013
Written by: Paul Freeman, NSW DPI, Wollongbar
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

Risk of diarrhoea in calves due to Cryptosporidium being transmitted to humans | Posted March 2012
Written by: Belinda Walker Technical specialist Animal Biosecurity, NSW DPI, Bob McKinnon Senior District Veterinarian, Central North LHPA, Ross Kemp District Veterinarian, Mid Coast LHPA Keith Eastwood, Hunter New England Health, David Durrheim, Hunter New England Health, Peter Massey, Hunter New England Health, Philippe Porigneaux, Hunter New England Health Josephine Ng, Murdoch University, Una Ryan, Murdoch University
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

Rockfern poisoning in sheep and cattle | Posted July 2013
Written by: Duncan McRae, Katie Kent (SU vet students) 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


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

Salmonella mortality in extensive cattle herd | Posted August 2010
Written by: Libby Read, District Veterinarian, North West LHPA (Narrabri-Walgett)
An investigation into the deaths of 50 calves found after a wet period ... Read more

Salmonellosis in adult beef cattle | Posted December 2011
Written by: Evelyn Walker, District Veterinarian Central West Livestock Health and Pest Authority, Dubbo
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

Salt poisoning in cattle | Posted April 2015
Written by: Scott Ison, Murray Local Land Services, Albury
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

Schmallenberg virus - what is all the fuss about? | Posted April 2013
Written by: P.D. Kirkland, Virology Laboratory, EMAI, Camden NSW
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 – risk and recognition | Posted March 2011
Written by: Peter James 1 and Peter Green 2
1 Queensland Alliance for Agriculture and Food Innovation (QAAFI), Uni of Queensland
2 Queensland Department of Employment, Economic Development and Innovation (DEEDI)

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

Selenium deficiency in weaned Hereford calves | Posted March 2011
Written by: Bruce Watt, Tablelands Livestock Health and Pest Authority
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 | Posted March 2011
Written by: Bruce Watt and Jeff Eppleston, Tablelands Livestock Health and Pest Authority, Bathurst, NSW
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

Smartweed (Persicaria spp.) poisoning in cattle | Posted April 2013
Written by: Ian Lugton, District Veterinarian, SELHPA, Bega
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

Spongy degeneration in the brain of an Angus calf | Posted August 2010
Written by: Christina Kwan, Veterinary Intern in Pathology, University Veterinary Teaching Hospital, Camden
A calf showing recumbency and depression has diffuse vacuolation of the brain ... Read more

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

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

Sporadic bovine leucosis in a calf | Posted March 2012
Written by: Libby Read, District Veterinarian, North West LHPA
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

Subacute nutritional muscular distrophy (white muscle disease) in angus calves | Posted March 2012
Written by: Bruce Watt, Tablelands LHPA, Bathurst and Tanya Rajkumar, 2011 final year veterinary student, University of Sydney
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

Suspected case of Datura ferox (‘fierce thornapple’) toxicity in cattle | Posted May 2016
Written by: Nigel Gillan, District Veterinarian, Mudgee
There are six species of Datura naturalised in Australia; all are potentially poisonous, containing a range of tropane alkaloids including scopolamine, hyoscyamine, and atropine ... 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 | Posted June 2015
Written by: N Charman#, A Hodge#, C Colantoni# and J. Kelly* - # Zoetis Australia Pty Ltd, 5 Rider Boulevard, Rhodes, NSW - * Central West Local Land Services, 12 Buckley Drive, Coonamble, NSW
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

Suspect Salmonellosis case study | Posted December 2011
Written by: Matthew Ball, District Veterinarian, Lismore
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

Suspected fluquinconazole toxicity in beef cows | Posted May 2014
Written by: Ted Irwin, District Veterinarian North West LLS (Warialda)
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

Suspected sticky nightshade (Solanum sisymbriifolium) intoxication in a greater Sydney beef herd | Posted February 2015
Written by: Kate Sawford, Greater Sydney Local Land Services
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


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Theileria and pneumonia in calves | Posted February 2011
Written by: Matthew Ball, District Veterinarian, Lismore
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 | Posted May 2014
Written by: Ted Irwin, District Veterinarian North West LLS (Warialda)
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 | Posted April 2013
Written by: Graeme Eamens and Cheryl Jenkins, Microbiological Diseases and Diagnostics Research, EMAI Camden NSW
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 | Posted April 2013
Written by: Allan Glassop and Jim Kerr, Mid Coast LHPA, Wingham
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 | Posted December 2011
Written by: Ted Irwin, North West Livestock Health and Pest Authority
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 | Posted March 2015
Written by: Shayne Fell* Cheryl Jenkins*, Jade Hammer+, Gaye Krebs# and Emma Swilks#
*Microbiological Diseases and Diagnostics Research, EMAI Menangle NSW
+Main Street Veterinary Clinic, Bairnsdale Vic
#Charles Sturt University, Wagga Wagga NSW<

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 fever | Posted July 2012
Written by: Phillip Kemsley, District Veterinarian, Casino and Jessica Hamilton, Final year Veterinary Intern, University of Sydney
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, challenges in diagnosis | Posted August 2010
Written by: Dr Melinda Gabor, EMAI
Histopathology of the liver from various toxins are discussed in minute detail... Read more

Trichomoniasis eradication - a case study | Posted August 2010
Written by: Andrew Biddle, DV, New England LHPA, Glen Innes
How an enterprise eradicates and develops a strategy to keep out infectious infertility ... Read more

Trypanosomes - A millstone for the developing world and an insidious threat to Australian livestock | Posted March 2015
Written by:Bruce Watt, Central Tablelands Local Land Service, Bathurst NSW
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

Two “Outbreaks” of Actinobacillosis in beef cattle | Posted 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


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Unusual bovine respiratory disease outbreak | Posted March 2011
Written by: Ian Lugton, SDV, South East LHPA, Bega and Paul Hick
and Peter Kirkland, Virology Lab, I&I NSW, EMAI, Menangle

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


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Vagus indigestion in an angus cow | Posted September 2012
Written by: Bruce Watt, Tablelands Livestock Health and Pest Authority, Bathurst
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

Vale rinderpest | Posted June 2015
Written by: Dan Salmon, Regional Veterinarian, Deniliquin
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


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Wallerian Degeneration Caused by Bovine Ephemeral Fever in a NSW North Coast Dairy Cow | Posted September 2016
Written by: Liz Bolin, Casino District Veterinarian
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

Water (salt) intoxication in a mob of steers | Posted November 2015
Written by: Megan Davies, DV Narrabri, North West LLS
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

Water, water everywhere and not a spot to stand | Posted March 2011
Written by: Libby Read, DV Narrabri-Walgett
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

Wet pasture and failure of rumen development | Posted July 2012
Written by: Matt Ball, Senior District Veterinarian Lismore
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


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Yersiniosis in cattle | Posted September 2012
Written by: Phillip Kemsley, North Coast LHPA, Casino
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? | Posted October 2011
Written by: David Thomson, District Veterinarian, Grafton
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