Case notes on veterinary investigations in sheep, cattle and other species
SHEEP 
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A
Abomasal emptying defect in a Suffolk ewe | Posted January 2019
Written by: Bruce Watt, Central Tablelands LLS, Bathurst and Patrick Staples, State Veterinary Diagnostic
Laboratory, EMAI, Menangle
Abomasal emptying defect (AED) is characterized by progressive weight loss over days to months and distension
and impaction of the abomasum ... Read
More
Abomasal emptying defect of sheep | Posted March 2012
Written by: Colin Peake, Riverina Livestock and Pest Authority, Hay and Patrick Staples, NSW State
Veterinary Diagnostic Laboratory, Menangle
Abomasal emptying defect is an idiopathic syndrome of abomasal distension and impaction described in Suffolk
and Hampshire sheep primarily ... Read More
Acidosis in dorper ewes on pasture | Posted May 2016
Written by: Judy Ellem and Heidi Austin, North West LLS, Tamworth and Kate New-Tolley Veterinary Student,
Charles Sturt University
In North West NSW in late April and early May 2015, three cases of lactic acidosis and one suspected case were
seen in Dorper ewes on pasture with no history of grain feeding ... Read More
Acute and subacute aspiration pneumonia in merino ewes post immersion cage dipping Posted November 2024
Written by: Alicia Moses, Central West LLS, Grenfell NSW, Anne Jordan and Emily Winkenwerder, EMAI, Menangle
NSW
This is a case report where 57 out of 4200 merino ewes died between 12 hours and one week following a cage dipping
event with suspected aspiration pneumonia ... Read More
Acute lupinosis with concurrent contagious ophthalmia and polioencephalomalacia in weaned lambs in the
South Australian Mallee | Posted August 2023
Written by: Jeremy Rogers, Strathalbyn, SA and Dr Julie Wayne BVSc(hons), MVSC, MANZCVS (Pathobiology),
DACVP (Anatomic Pathology) Gribbles VETLAB
After three days hoggets were taken off lupin stubble and were noticed with neurological signs of "star
gazing", "walking into fences", "stiff back legs", and some died ... Read More
Acute post drenching mortality in lambs | Posted July 2013
Written by: Brigit Pitman, District Veterinarian, Hume LHPA
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
Acute primary copper poisoning in sheep after a footbath accident | Posted May 2022
Written by: Erika Bunker and Patrick Staples, Elizabeth Macarthur Agricultural Institute, Menangle and
Bruce Watt, Central Tablelands Local Lands Services, Bathurst
Primary copper poisoning occurs in sheep that are fed or treated with excess copper, and which may be acute
(from a single exposure) or chronic ... Read More
Advances in control, prevention and eradication of footrot in small ruminants | Posted September
2018
Written by: Om Dhungyel and Richard Whittington, Sydney School of Veterinary Science, The University of
Sydney
Footrot is a contagious disease caused by the interaction of the essential causative agent Dichelobacter
nodosus and sympatric bacteria, in the complex environment of the epidermal tissues of the hoof and the
host immune system ... Read More
Adverse reaction to Tetravet flexi-dose Oxytetracycline PVP injection | Posted June 2011
Written by: Tony Morton , DV, Hume LHPA
With the withdrawal of penicillin/streptomycin from the market there
has been a move to the use of long-acting tetracyclines ... Read More
Age, liveweight and immunity of lambs to worms | Posted July 2012
Written by: Susan McClure, DV Central West LHPA
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
Almost gone but not forgotten - the human impact of OJD | Posted July 2023
Written by: Bill Johnson, Gunning, Former District Veterinarian, Goulburn
OJD impacted owners of infected flocks, their families, neighbouring landholders, livestock agents, livestock
husbandry and shearing contractors, livestock carriers, abattoir managers, saleyards operators, veterinarians
and biosecurity officers ... Read more
Angular limb deformity in young merino rams | Posted April 2020
Written by: Bruce Watt, Central Tablelands Local Land Services, Bathurst and Patrick Staples, Elizabeth
Macarthur Agricultural Institute, Menangle
Young rapidly growing domestic animals are subject to angular limb deformities, in sheep known as 'bentleg' or
'bowie', most commonly affecting the forelimbs of young rapidly growing ram lambs ... Read More
Anthelmintic resistance survey in the Central West LHPA | Posted April 2013
Written by: Evelyn Walkera, Neil Charmanb, Jillian Kellya, and Susan
McClurea
a. District Veterinarian, Central West LHPA, Dubbo
b. Veterinarian, Pfizer Animal Health Australia
Internal parasites are ranked the highest costing disease in the Australian sheep industry followed by
flystrike, lice, and post weaning mortality ... Read More
Anthrax outbreak at Bourke | Posted March 2011
Written by: Brian Hodge, District Veterinarian South East Livestock Health and Pest Authority, Cooma
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
Aortic rupture (spontaneous) in Dorper ewes | Posted July 2013
Written by: Bill Johnson, District Veterinarian, Tablelands LHPA, Goulburn
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
Arcanobacterium pyogenes pneumonia in lambs | Posted March 2013
Written by: Mandi Carr, District Veterinarian, Tablelands LHPA
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
Arthritis in sheep | Posted August 2010
Written by: Bruce Watt, District Veterinarian, Central Tablelands RLPB
Infectious arthritis is a common problem in young Australian sheep and ... Read More
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B
Bacterial meningitis in a ram | Posted August 2017
Written by: Rahul Shankar - District Veterinarian (DV), Young and Erika Bunker - Veterinary Pathologist,
EMAI
This case report describes an animal exhibiting severe neurological symptoms that was also eligible for the
National Transmissible Spongiform Encephalopathy Program (NTSEP), a program that underpins market access with
our trading partners ... Read
More
Barbervax: Potentially a new tool for the control of barber's pole worm of sheep | Posted April
2013
Written by: Smith, W.D*., Newlands, G.F.N*., Fitzpatrick, J.L*, Dobson, R.# and Besier,
B+.
*Moredun Research Institute, Pentlands Science Park, Edinburgh, UK.
#Murdoch University, Western Australia.
+Department of Agriculture and Food Western Australia, Albany WA.
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
Bone problems in lambs on grazing cereals | Posted August 2008
Written by: Bruce Watt, District Veterinarian, Central Tablelands RLPB
Lambs are reported to develop skeletal problems due to calcium deficiency, internal parasitism, copper
deficiency... Read More
Bacterial rhinitis in merino ewes | Posted May 2007
Written by: Eliz Braddon, District Veterinarian, Young RLPB
Severe nasal discharge with swollen nasal planes and upper lip, combined with ... Read More
Bloat on faba beans in weaned lambs | Posted: October 2010
Written by: Gabe Morrice, District Veterinarian, Riverina LHPA
A trail of faba beans to get the lambs into the yards, followed by a big drink of water leads to losses ... Read More
Bloat, frothy, in sheep | Posted October 2010
Written by: Ian Masters, Hume LHPA and Bruce Watt, Tablelands LHPA
This report details two cases, one confirmed by autopsy ... Read More
Blowfly strike waves: Biology and control | Posted March 2011
Written by: Peter James, Queensland Alliance for Agriculture and Food Innovation (QAAFI),
University of Queensland
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
Brachygnathia, cardiomegaly and renal hypoplasia syndrome in poll merino lambs | Posted August
2010
Written by: Peter Windsor, Faculty of Veterinary Science, University of Sydney
A poll merino breeder reports episodic freak lambs with a poor survival rate ... Read More
Branhamella ovis and Chlamydia pecorum isolated from a case of conjunctivitis (with some
polyarthritis) in lambs | Posted April 2013
Written by: Evelyn Walker, District Veterinarian, Central West LHPA, Dubbo
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
Brucella ovis as cause of abortion | Posted March 2016
Written by: Rahul Shankar, DV Young and Jillian Kelly, DV Coonamble
A producer noticed several aborted fetuses about his lambing paddock, stocked with 3-4 year old ewes. ... Read More
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C
Campylobacter abortion in sheep | Posted April 2017
Written by: Rahul Shankar, District Veterinarian, Riverina LLS, Young
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
Case of colloid goitre in a second cross lamb | Posted May 2016
Written by: Effie Lee, State Veterinary Diagnostic Laboratory, EMAI, Menangle and Bruce Watt, Central
Tablelands LLS, Bathurst
A sheep producer from a property about 30 km south west of Bathurst found a single second cross lamb with a
massive swelling of the ventral neck. The lamb survived for two days but then died ... Read More
A case of inherited alopecia in Poll Dorset sheep | Posted November 2024
Written by: Bruce Watt, Central Tablelands LLS Bathurst, Beatrice Humphries, student University of Sydney,
Katie Eager, EMAI Menangle, Brendon O'Rourke, EMAI, Imke Tammen, University of Sydney, Leah Johnson, EMAI and Angel
Ngo, EMAI
In this case, five animals sired by a Poll Dorset ram from an unknown ewe flock were confirmed as being homozygous
for the markers associated with hypotrichosis ... Read More
Case of lupinosis | Posted December 2012
Written by: Eliz Braddon, SDV Lachlan LHPA
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
Case of scabby mouth in lot fed lambs | Posted October 2013
Written by: Brigit Pitman, District Veterinarian, Hume LHPA
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
Case of the sheep with missing ears | Posted June 2015
Written by: Bob McKinnon, Regional Veterinarian, North West Local Land Services, Tamworth
"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
Case study of 'winter scours' in sheep in SA Mallee caused by nutrient deficiencies | Posted September
2021
Written by: Jeremy Rogers, Senior Veterinary Officer, Biosecurity South Australia
'Winter scours' syndrome in adult sheep and weaner lambs is a regularly occurring issue in some sheep flocks
in particular parts of the southern Mallee in SA ... Read More
Chlamydia pecorum abortion in five widely dispersed NSW ewe flocks | Posted February 2021
Written by: Bruce Watt, Central Tablelands Local Land Services, Justine McNally, North West Local Land
Services, Jess Bourke, Central Tablelands Local Land Services, Charlotte Cavanagh, Western Local Land
Services, Amy Masters, Central Tablelands Local Land Services, Trent McCarthy, Western Local Land Services
and Cheryl Jenkins and Patrick Staples, Elizabeth Macarthur Agricultural Institute, Menangle
While this organism is a well-known cause of arthritis and conjunctivitis in sheep, it was also regarded as a
rare cause of abortions in ewes ... Read more
Chlamydial infection in sheep | Posted March 2011
Written by: Bruce Watt, SDV, Tablelands Livestock Health and Pest Authority
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
Chlamydia pecorum abortion in sheep | Posted December 2021
Written by: Pedro Pinczowski, NSW Department of Primary Industries, Biosecurity & Food Safety, EMAI,
Menangle NSW
This report describes severe necrosuppurative placentitis with vasculitis, and foetal pyelonephritis and
enteritis in late-term abortions of maiden ewes ... Read more
Chlamydial polyarthritis in feedlot lambs | Posted March 2020
Written by: Ruth Watt, final year veterinary student Charles Sturt University, Susan Anstey, Genecology
Research Centre, University of the Sunshine Coast and Bruce Watt, Central Tablelands Local Land Services,
Bathurst
In Australia Chlamydia pecorum is estimated to be present in 30% of the nation's sheep flock and has
been associated with polyarthritis, conjunctivitis and occasionally abortions ... Read more
Chlamydia serological study in a commercial sheep flock | Posted March 2016
Written by: Evelyn Walker, District Veterinarian Central West LLS (Dubbo) and Assoc. Prof. Adam
Polkinghorne, Centre for Animal Health Innovation, University of the Sunshine Coast
Chlamydia pecorum, commonly isolated from the gastrointestinal tract, is ubiquitous in livestock
globally. In sheep it is mainly associated with keratoconjunctivitis and polyarthritis but also implicated in
respiratory disease, abortions and enteritis ... Read More
Chronic copper poisoning in feedlot lambs| Posted August 2018
Written by: Nik Cronin, District Veterinarian, Central West LLS
Chronic copper poisoning was diagnosed in feedlot lambs in September 2017 on a property in central New South
Wales following an investigation into sporadic sudden deaths ... Read More
Chronic copper toxicity in mature composite ewes grazing subterranean clover dominant pastures |
Posted August 2021
Written by: Jemima Milton, final year student at Charles Sturt University Veterinary School; Bruce Watt,
Central Tablelands LLS, Bathurst; and Anne Jordon, EMAI, Menangle
Ewes had been grazing abundant subterranean clover dominant pastures for several months prior to being found
dead or acutely ill, with clinical signs of depression, weakness and recumbency, followed by death ... Read More
Chronic fasciolosis with aberrant mature fluke| Posted April 2013
Written by: Bruce Watt (Tablelands Livestock Health and Pest Authority) and Patrick Staples (State
Veterinary Diagnostic Laboratory, Elizabeth MacArthur Agricultural Institute, Menangle)
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
Clinical bluetongue virus in sheep in the Lower Hunter in April 2024 | November 2024
Written by: Kylie Greentree, Hunter LLS, Maitland
Bluetongue is an insect-borne, primarily biting midges Culicoides brevitarsis, viral
pathogen affecting ruminants and is primarily a disease of sheep ... Read More
Closantel toxicity in crossbred lambs | Posted September 2016
Written by: Bruce Watt (Central Tablelands Local Land Services, Bathurst) and Erika Bunker (State
Veterinary Diagnostic Laboratory, EMAI, Menangle)
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
Clostridial myositis in South Australian feedlot lambs | Posted August 2020
Written by: Stephanie Warwick, DVM, Livestock Production Advisor, Elders, Jeremy Rogers, Senior Veterinary
Officer, PIRSA, and Effie Lee, Gribbles VETLAB, SA
A producer from South Australia reported that 5 ex 5,000 lambs were found dead, with a further four with
swollen back legs, and one with a swollen face ... Read More
Clostridium sordellii, A traditional and emerging pathogen | Posted February 2015
Written by: Bruce Watt, Local Land Services, Bathurst and Patrick Staples, State Veterinary Diagnostic
Laboratory, Menangle
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
Coccidiosis infection in merino lambs post weaning | Posted July 2012
Written by: Steve Eastwood - Senior District Veterinarian, New England LHPA
In March 2012 a stud/commercial Merino operation experienced scouring in a mob of commercial Merino lambs ...
Read More
Colitis typhlitis in weaned lambs | Posted August 2007
Written by: Dan Salmon, District Veterinarian, Riverina RLPB
Investigates two incidents of haemorrhagic enteritis following transport of weaned lambs over
long distances ... Read More
Contagious ecthyma (scabby mouth / orf) in young rams, an unusual presentation | Posted December
2012
Written by: Libby Guest, District Veterinarian, North West LHPA
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
Contagious ophthalmia associated with Mycoplasma conjuctivae in sheep | Posted November
2020
Written by: Laura Kerrison, Veterinary Student, USYD, Bruce Watt, Central Tablelands LLS, and Mark
Hazelton, Ania Deutscher and Mark Westman, EMAI
Four cases of contagious ophthalmia were investigated in the Central Tablelands, NSW, from March to June
2020... Read More
Copper poisoning in sheep grazing in a vineyard| Posted October 2019
Written by: Dr John Hammond and Dr Ariel Stephenson, Riverland Veterinary Practice, Berri, SA and Jeremy
Rogers, Senior Veterinary Officer, Murray Bridge, SA
Owners of a small flock of 60 sheep grazing amongst grape vines became alarmed when seven died over the course
of a few days in May 2019 ... Read More
Coxiella burnetii associated reproductive disorders in small ruminants | Posted August
2018
Written by: Lucienne Downs, Central Tablelands Local Land Services, Orange
Coxiella burnetii has been found in the foetal fluids, vaginal mucous, semen, milk, urine and faeces of
many domestic and wild animals ... Read More
Crystal associated cholangiopathy (Yellow Big Head) in lambs grazing Tribulus terrestris |
Posted July 2013
Written by: Greg McCann (Central West LHPA, Dubbo)
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
Cysticercal migration causing massive eosinophilic granulomatous hepatitis in sheep | Posted June
2018
Written by: Panayiotis Loukopoulos, Bruce Allworth, Bhanudas K. More, David Jenkins, Alison Neef, and
Robert Woodgate
A case of massive eosinophilic granulomatous hepatitis attributed to hepatic cysticercosis in a sheep in the
Riverina, NSW, a condition that, although rarely encountered, needs to be differentiated from the much more
commonly encountered fasciolosis ... Read
More
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D
Dermatosparaxis in a white Dorper flock | Posted March 2012
Written by: Jillian Kelly, District Veterinarian, Central West Livestock Health & Pest Authority,
Coonamble & Nyngan
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
Did in utero exposure to Pyrrolizidine Alkaloids cause the severe chronic hepatopathy seen in
weaned Autumn-drop lambs on three central west NSW properties?| Posted October 2019
Written by: Belinda Edmonstone, Central West Local Land Services, Forbes and Patrick Staples and Anne
Jordan, both of Elizabeth Macarthur Agricultural Institute, Menangle
Pyrrolizidine alkaloidosis commonly affects grazing livestock in Southern Australia. Usually mature sheep show
signs of hepatopathy after one or more seasons of exposure to plants high in pyrrolizidine alkaloids (PAs)
such as Paterson's Curse and common heliotrope ... 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, University of Sydney
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
Dorsal skin lesions after ram shearing in far northwest: a complex aetiology | Posted March 2012
Written by: Greg Curran, Veterinary Officer, DPI, Broken Hill
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
Drench resistance on the Northern Tablelands | Posted April 2013
Written by: Andrew Biddle, New England LHPA (Glen Innes)
Resistance to anthelminthics 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 | Posted March 2012
Written by: Eliz Braddon, SDV Lachlan LHPA
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
Drought feeding and management | Posted May 2019
Written by: BR Watt
Crucial decisions must be made as the onset of drought becomes obvious. The most important decision is what to
sell and what to keep ... Read
More
Drought lot Listeria abortions and some unexpected other diseases | Posted March 2012
Written by: A G Morton, District Veterinarian, Hume Livestock Health and Pest Authority
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
Dystocia in maiden Dorper ewes | Posted September 2011
Written by: Derek Lunau, DV Moree
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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E
Early weaning lambs & calves - 2018 drought experiences | Posted December 2019
Written by: Jillian Kelly, District Veterinarian Coonamble & Scott Parry, North West Vets
Early weaning is a powerful drought management tool that can be used to influence nutritional, reproductive,
animal health, behavioural, logistical and environmental factors associated with breeding sheep and cattle ...
Read more
Elevated aqueous humor D-lactate levels confirm rumenal acidosis in an autolysed lamb carcass | Posted
July 2017
Written by: Jeremy Rogers, Senior Veterinary Officer, PIRSA
Ocular fluid, brain and rumen observations can still be helpful several hours after an animal has died, even
when other tissues and organs are autolysed. In this case acidosis was diagnosed in an autolysed lamb carcass
... Read More
Enzootic ataxia | Posted March 2011
Written by: Judy Ellem, DV Coonabarabran
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
Epidemiology of gastrointestinal nematodes in sheep grazing irrigated summer pastures | Posted March
2012
Written by: Dan Salmon, SDV Deniliquin
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
Eradication of Ovine Brucellosis during joining by 14-day period between removal of infected, and
replacement with uninfected, rams | Posted August 2021
Written by: Frances Zewe, Final year DVM student, Sydney School of Veterinary Science and Shaun Slattery,
District Veterinarian, North West LLS, Narrabri NSW
The March 2020 pregnancy scanning of 800 spring 2019-joined ewes found no pregnancies in the first 200 head
and scanning was discontinued ... Read
More
Eradication of ovine brucellosis in Dorpers | Posted October 2013
Written by: Tahleah Haddow, Veterinary Student, Charles Sturt University, Wagga Wagga &
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...the owner confirmed finding several rams (also dorper) from his
neighbour on his property several months before ... Read More
Erysipelas arthritis in crossbred ewes | Posted August 2007
Written by: Bruce Watt, District Veterinarian, Central Tablelands RLPB
A case of poor performance in a ewes flock that culminated in severe arthritis and ... 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
Exertional rhabdomyolysis in ewes | Posted July 2013
Written by: Elizabeth Braddon, SDV Lachlan LHPA
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
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 ↑
F
Failure of innoculation (Scabigard, Zoetis) to prevent Scabby Mouth
(Orf)
Written by: Bruce Watt, Central Tablelands Local Land Services, Bathurst and Kelly Graham,
Zoetis
In mid-November a livestock producer noticed mixed-sex AW lambs with symptoms of scabby mouth
despite inoculation against scabby mouth (using Scabigard, Zoetis) in June / July ... Read More
Fatal intestinal torsion in a ram post-shearing | Posted October 2013
Written by: Brigit Pitman, District Veterinarian Hume LHPA
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
Feedlot lactic acidosis despite complete ration, buffer and roughage provided| Posted October
2019
Written by: Courtney Simkin, District Veterinarian, Hay
Lactic acidosis (grain overload or grain poisoning) can occur easily in feedlot situations; especially during
the transition to a high grain ration ... Read More
Field gastrointestinal worm count in sheep and goats | Posted April 2017
Written by: Bill Johnson, South East LLS, Goulburn
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
Fireweed in sheep and the food chain | Posted April 2017
Written by: Helen Schaefer, District Veterinarian, South East Local Land Services, Bega
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
Five outbreaks of Listeria ivanovii abortion in sheep and goats on the Central Tablelands of
NSW | Posted February 2022
Written by: Conor McConnell (final year veterinary student at CSU Wagga Wagga), Jess Bourke (Central
Tablelands LLS DV, Mudgee), Emilee Johnstone (Central Tablelands LLS DV, Cowra) and Bruce Watt (Central
Tablelands LLS DV, Bathurst)
This paper reviews five abortion outbreaks in sheep and goats caused by L. ivanovii, while this
abortion storm is also compared with others reported in the literature to identify trends ... Read More
Fluoroacetate (1080) toxicity in a merino mob | Posted December 2017
Written by: Megan Davies, District Veterinarian, Narrabri
There are a range of neurological diseases in sheep which can feature seizures as a clinical sign. Chemical
and plant poisonings, polioencephalomalacia, bacterial infections, nutritional deficiencies, and exotic
diseases can all present with similar neurological signs ... Read More
Flystrike, insecticide resistance and dressings | Posted November 2024
Written by: Narelle Sales, Elizabeth Macarthur Agricultural Institute
With dicyclanil resistance a common reality for sheep and wool producers in NSW, chemical options to prevent or
treat flystrike are restricted ... Read More
Flystrike prevention and treatment - planning now required | Posted January 2023
Written by: Narelle Sales, NSW DPI, Elizabeth Macarthur Agricultural Institute, Menangle
There are long-, medium- and short-term strategies that should be adopted against flystrike with an overall
view of reducing reliance on chemicals ... Read more
FMD in South-East Asia | Posted July 2023
Written by: Peter Windsor, Production Animal Welfare & Health Services
FMD has been observed in South-East Asia for 150 years and remains endemic, with generally piecemeal control
measures until an integrated approach was initiated ... Read more
Follicular (epidermal inclusion) cysts diagnosed and sheep pox and sheep scab ruled out in a lamb in an
abattoir consignment | Posted May 2023
Written by: Jeremy Rogers, Senior Veterinary Officer, PIRSA, Murray Bridge, SA and Effie Lee, Veterinary
Pathologist
In this case, in a mob of 50 lambs submitted for slaughter, one lamb had unusual skin lesions ... Read More
Foot abscess in Tablelands sheep: evaluation of risk factors and management options | Posted August
2020
Written by: Jeff Eppleston and Bruce Watt, Tablelands Livestock Health and Pest Authority, Bathurst, NSW
and Navneet Dhand and Robert Barwell, Faculty of Veterinary Science, The University of Sydney, Camden,
NSW
Foot abscess occurs sporadically in sheep flocks depending on pasture conditions, but during the wet
winter/spring of 2010 on the tablelands of NSW foot abscess was common ... 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
Foot abscess in merino ewes and first cross lambs | Posted July 2012
Written by: Toni Jericho, LH Ranger and Shaun Slattery, SDV North West LHPA
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
Footrot: Past, present and future | Posted March 2015
Written by: Dan Salmon, Regional Veterinarian, Deniliquin
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
Footrot research update from the University of Sydney (2018-2021) | Posted September 2021
Written by: Om Dhungyel, Richard Whittington, Andrew McPherson and Karen Smith, Sydney School of Veterinary
Science, The University of Sydney
The University of Sydney continues to offer a referral service and laboratory diagnostic service for footrot.
This is quite a busy service assisting field veterinarians and farmers in the southern states ... Read More
Frothy bloat in lactating merino ewes | Posted October 2014
Written by: Nik Cronin, District Veterinarian Forbes, Central West Local Land Services
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
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 ↑
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The garden plant, African Daisy, (Dimorphotheca / Osteospermum) causing cyanide poisoning in merino
wethers | Posted July 2019
Written by: Bruce Watt, Central Tablelands LLS, Bathurst, Seanna McCune, National Herbarium of NSW, Sydney
and Erika Bunker, State Veterinary Diagnostic Laboratory, Menangle
The perennial garden plant African Daisy or Cape Daisy is known to contain cyanogenetic glycosides, with the
greatest amount in green leaves ... Read
More
Goitre in lambs | Posted March 2011
Written by: Ian Masters DV, Gundagai
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
Goitrogenic compounds causing congenital goitre in Poll Dorset lambs | Posted September 2011
Written by: Penelope Hasson and Penelope Brown, 5th year Veterinary Science Students,
University of Sydney
Robert Watt, Cowra, private veterinary practitioner
Bruce Watt, Senior District Veterinarian, Tablelands Livestock Health and Pest Authority
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
Gongylonemiasis causing oral ulceration (with exclusion of vesicular disease) in merino ewes from Barossa
Valley, South Australia | Posted May 2019
Written by: Dr Catherine Harper, Barossa Veterinary Service, Nuriootpa SA and Kapunda SA
A producer reported that Merino ewes with lambs at foot were “frothing at the mouth”, one ewe had died and
approximately 20 percent of the flock were affected ... Read More
Grain engorgement in weaner lambs | Posted May 2007
Written by: Eliz Braddon, DV Young RLPB
Sudden death in weaner lambs with one animal with intriguing respiratory grunts ... Read More
Grain overload and polioencephalomalacia in Dorper cross lambs | Posted September 2011
Written by: Andrew Biddle - District Veterinarian, New England LHPA
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 | Posted August 2009
Written by: Katherine Marsh, DV Central West LHPA
Losses in ewes on wheat stubble with no apparent grain spills was investigated... Read More
Grain poisoning treated with virginiamycin andad lib. sodium bicarbonate | Posted August
2009
Written by: Tony Morton , DV, Hume LHPA
In the face of high mortality in sheep provided access to a paddock with grain spills ... Read More
Grass seed infestation of ear of lambs with penetration through the auditory meatus | Posted June
2011
Written by: Dan Salmon, District Veterinarian, Riverina RLPB
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 (hypomagnesaemic tetany) in first cross ewes with lambs at foot | Posted December
2021
Written by: Bruce Watt, Central Tablelands LLS, Bathurst, NSW, David Paynter, RLS, Benalla, Victoria and
Patrick Staples, EMAI, Menangle, NSW
Grass tetany is the most common killer of mature lactating cows on the Central Tablelands of NSW but it is
surprisingly rare in lactating ewes ... Read More
Gudair® vaccine efficacy | Posted August 2010
Written by: Josephine Gollan, Jeff Eppleston, Navneet Dhand, Peter Windsor,
Faculty of Veterinary Science, University of Sydney
The influence of management factors on the efficacy of Gudair® vaccine is studied ... 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 ↑
H
Haemochromatosis in two mobs of sheep | Posted August 2010
Written by: Gabrielle Morrice, District Veterinarian, Riverina LHPA
Two properties reported weight loss, lethargy and listlessness on a good diet ... Read More
Haemonchus dipstick test for detecting Barbers Pole worm in sheep | Posted August 2010
Written by: Mark Doherty, Technical Services Manager, Ancare Australia Pty Limited
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 | Posted
July 2017
Written by: Jeremy Rogers, Senior Veterinary Officer, PIRSA
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
Haemorrhage in the anterior chamber of ewes poisoned with urea | Posted November 2020
Written by: Tilly Morgan, Veterinary Student, CSU and Lucienne Downs, District Veterinarian, Central
Tablelands LLS
The affected flock had been grazing a stubble pasture and receiving wheat until moved into a laneway, where 26
ewes were found dead the following morning, with no clinical signs observed... Read More
Helcococcus ovis isolated from suppurative arthritis in a lamb | Posted August 2020
Written by: Lucienne Downs, DV, Central Tablelands LLS
This article describes a case of suppurative arthritis in a four-week-old lamb and provides a brief literature
review of the causative agent, Helcococcus ovis ... Read More
Hepatic necrobacillosis in lambs | Posted March 2023
Written by: BR Watt, Central Tablelands LLS and Patrick Staples EMAI, Menangle)
In a mob of lambing White Dorper x Aussie White mature ewes two lambs had previously been found stillborn and
two lambs were found sick ... Read
More
Hepatogenous photosensitisation in lactating ewes on grazing oats that were direct drilled into a
fungus-affected barley stubble | Posted November 2015
Written by: Amy Shergold, Riverina Local Land Services, Wagga Wagga
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
High prevalence mild dermatophilosis (lumpy wool) in unweaned merino lambs following a wet spring |
Posted August 2017
Written by: Will Berry (Final year veterinary student, Charles Sturt University, Wagga Wagga NSW) and Bruce
Watt, Central Tablelands Local Land Services, Bathurst, NSW
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
Histophilus somni epididymitis in Dorper rams | Posted March 2011
Written by: Dermot McNerney, VO Dareton
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
How to host an anthrax incident | Posted March 2011
Written by: Dan Salmon, Senior District Veterinarian, Deniliquin
Anthrax is not uncommon in parts of the Riverina Livestock Health and Pest District. 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
How well does the elastase test support clinical footrot diagnosis? | Posted January 2023
Written by: Alison Collins, Karen Smith and Damian Collins, NSW DPI, EMAI, and Om Dhungyel, University of
Sydney
This study measured the rate of elastase clearing (digestion of elastin particles) in D. nodosus
isolate cultures submitted from 184 sheep flocks in NSW ... Read more
Hypocalcaemia and ketosis associated with handling in late pregnant ewes | Posted October 2013
Written by: Bruce Watt, Tablelands Livestock Health and Pest Authority, Bathurst
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 | Posted March 2012
Written by: Gabe Morrice, Riverina Livestock Health and Pest Authority, Narrandera
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
Hypomagnesaemia in sheep | Posted March 2012
Written by: Steve Whittaker and Brigit Pitman, Hume LHPA
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
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 ↑
I
Illness and mortalities in crossbred lambs, Erysipelothrix rhusiopathiae cultured from a single
joint | Posted February 2015
Written by: Nik Cronin, DV Forbes and Hanna Thomas, DV Condobolin Central West Local Land Services
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
Ill-thrift and wastage in ewes caused by urolithiasis and lupinosis | Posted August 2020
Written by: Katelyn Braine, DV, Riverina LLS, Gundagai
A sheep producer in the Riverina contacted the local District Veterinarian about ill-thrift and wastage in a
flock of lactating ewes ... Read
More
An intestinal adenocarcinoma causing ascites and death in a merino ewe | Posted August 2022
Written by: BR Watt, Central Tablelands LLS, Bathurst and Patrick Staples, EMAI, Menangle
Intestinal adenocarcinoma is a common tumour of older sheep, most often discovered at slaughter as an
incidental finding ... Read More
An interesting neuropathy in Suffolk rams | Posted May 2023
Written by: Bruce Watt, Central Tablelands LLS, Bathurst, Anne Jordan, EMAI, Menangle and Peter Windsor,
Professor Emeritus, Sydney School of Veterinary Science
In this case, two young Suffolk rams developed progressive hindquarter weakness in sequential years ... Read More
Intestinal adenocarcinoma in an emaciated first cross ewe | Posted March 2015
Written by: Patrick Shearer, State Veterinary Diagnostic Laboratory, Menangle and Bruce Watt, Central
Tablelands Local Land Services, Bathurst
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
Intestinal accident in fedlot lambs | Posted August 2007
Written by: Eloise Cotton Veterinary Intern, and Shaun Slattery DV Narrabri
Sudden death in lambs with post-mortem signs redolent of Redgut, but something is not quite right ...
Read More
Intraruminal anthelmintic capsules: risk and reward | Posted November 2024
Written by: Greg Little, Head of Regulatory Affairs & PV, ANZ, Boehringer Ingelheim Animal Health Australia
Pty. Ltd. and Bruce Watt, Central Tablelands Local Land Services, Bathurst
In recent trials, intraruminal capsules provided greater protection from worms and reduced pasture contamination
compared to either a short-acting pre-lambing treatment, or a short-acting pre-lambing treatment with an additional
treatment at lamb marking ... Read More
Introducing Flexolt® the only oral sheep lice control product | Posted November 2024
Written by: Felicity Wills, Ruminant Technical Advisor, MSD Animal Health
Flexolt® is the first ever oral lice treatment for sheep, giving producers flexibility when
it comes to treating their flock ... Read
More
Investigating suspected inherited neurologic conditions in ruminants | Posted July 2023
Written by: Leah Johnson1,2, Imke Tammen2, Mark Krockenberger3, Brendon
O'Rourke1 and Katie Eager1,2
1 EMAI, DPI, NSW
2 School of Veterinary Science, USyd, Camden, NSW
3 School of Veterinary Science, USyd, Camperdown, NSW
Our knowledge on inherited diseases and traits in animals is rapidly increasing with more than 298 bovine and
118 ovine single locus diseases and traits reported ... 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 ↑
J
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
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 ↑
K
Kangaroo gait in lactating ewes | Posted December 2016
Written by: Annabel Cadzow, Final-year DVM student, University of Adelaide, Roseworthy and Bruce Watt,
Tablelands Livestock Health and Pest Authority, Bathurst
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
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 ↑
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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
Lachlan drench resistance trial | Posted April 2013
Written by: Elizabeth Braddon, SDV Lachlan
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
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), 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
Lactic acidosis in lambs trail fed barley while being introduced to a regrowth canola crop during a failed
Spring in the Riverina | Posted December 2019
Written by: Dione Howard, Riverina Local Land Services, Wagga Wagga
Grazing of canola (Brassica napus) crops during winter has been adopted by many mixed farming
enterprises, and with seasonal conditions in 2018 which led to canola crops being cut for hay followed by late
spring rain ... Read more
Lamb icteric carcase condemnations due to Anaplasma ovis | Posted November 2024
Written by: Iria Macian1, Karen Hammad1, Andrea Capilla1, Raquel
Marín1, Ada Marcos1, Marcos Rupérez1, Joel Bueso-Ródenas2, Héctor Ruiz1
1. Ruminant Clinical Service of the Veterinary Faculty of Zaragoza, Spain
2. Department of Animal Production and Public Health, Faculty of Veterinary Medicine and Experimental Sciences,
Catholic University of Valencia San Vicente Mártir, Spain
A farm in the north-western region of Spain reported a concerning increase in the number of lamb carcase condemnations
due to severe jaundice, rendering them unfit for human consumption ... Read More
Lameness and foot lesions in Dorper sheep | Posted June 2011
Written by: Jillian Lawrence, University of Sydney Intern and
Libby Read, District Veterinarian, North West LHPA
Three cases of lameness in Dorper sheep were investigated during December and January ... Read More
Lameness and losses in crossbred ewes affected by floodwater | Posted December 2012
Written by: Belinda Edmonstone, District Veterinarian, Lachlan LHPA, Forbes Office
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 | Posted July 2013
Written by: David Cervera, Luis Miguel Ferrer and Delia Lacasta,
Veterinary Faculty of Zaragoza, Spain
Two sheep farms running 2500 sheep in total were affected with lamenes, in one flock 70 of 1000 sheep were
affected ... Read More
Larval hypobiosis Teladorsagia (Ostertagia) circumcincta | Posted March 2012
Written by: Dan Salmon, SDV Deniliquin
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 anthelmintics effective
against the larvae embedded in the abomasal mucosa ... Read More
Lessons from a regional lice control project in the tablelands of NSW | Posted June 2015
Written by: J Eppleston and B Watt, Tablelands Livestock Health and Pest Authority (now Central Tablelands
Local Land Service), Bathurst NSW
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
Lessons from the 2018 drought on the Central Tablelands | Posted December 2019
Written by: Bruce Watt, Central Tablelands Local Land Services
Our memories tend to be short, but it is important that we learn from each drought, to enable us to reduce
their social, environmental, economic and welfare impact in the future ... Read more
Listeria ivanovii abortion in sheep associated with decaying plant matter | Posted December
2011
Written by: Tanya Rajkumar, Katie Boulton (final year veterinary students University of Sydney) and
Elizabeth Braddon (Lachlan LHPA DV, Young) and Ian Masters (Hume LHPA DV, Gundagai) and Helen McGregor (Hume
LHPA DV, Wagga Wagga) and Michael Hornitzky (Senior Principal Research Scientist, EMAI) and Bruce Watt
(Tablelands LHPA DV, Bathurst)
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
Listeriosis in confinement ewes | Posted November 2020
Written by: Dione Howard, District Veterinarian, Wagga Wagga, Riverina LLS and Wesley Simek, USYD
Veterinary Student
A southern Riverina producer reported sporadic losses of 20 sheep over a month, found dead after displaying
neurological signs... Read More
Listeriosis in sheep and goats | Posted November 2020
Written by: Kylie Greentree, District Veterinarian, Hunter LLS (Maitland)
A sheep and goat producer in the Lower Hunter, lost three sheep showing clinical signs of anorexia, scours
over 2-3 days with some respiratory signs... Read More
Listeriosis in silage-fed ewes | Posted December 2011
Written by: Ruth and Howard Thompson, Blayney Veterinary Hospital, Erika Bunker, NSW State Veterinary
Diagnostic Laboratory, Menangle, BR Watt, Tablelands Livestock Health and Pest Authority, Bathurst
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
Livestock management in droughts — how to stop recurring themes from being recurring themes |
Posted December 2019
Written by: Paul Cusack BSc. BVSc. MVSt. MACVSc. M.Agribus. PhD., Australian Livestock Production Services
/ Adj Prof. CSU., Cowra NSW
The development of a substantial beef feedlot sector (total capacity 1.3 million head, January 2019) and
access to established or opportunity lamb feedlots, facilitates the managed sale of young livestock during
droughts at reasonable prices ... 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 ↑
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Maintaining a social licence to operate in times of drought | Posted December 2019
Written by: Sarah Bolton, North Coast Local Land Services, South Grafton
In recent times, drought conditions across much of Australia have seen increased media coverage of cases of
malnutrition, water deprivation and humane destruction of drought-affected livestock ... Read more
Malignant oedema associated with naval infection in lambs | Posted December 2021
Written by: Bruce Watt, Local Land Services, Bathurst and Anne Jordan, EMAI, Menangle
Malignant oedema usually occurs in lambs post marking, but in these two cases, lambs were infected and died
before marking ... Read More
Mannheimia mastitis and concurrent pneumonia in merino ewes with lambs at foot | Posted August
2007
Written by: Bruce Watt, DV Central Tablelands
This report describes an occurence of Mannheimia mastitis with pneumonia in two merino ewes with lambs at foot
... Read More
Monensin toxicity in sheep grazing a travelling stock reserve | Posted August 2023
Written by: Amy Masters, Central Tablelands Local Land Services, Orange and Mark Hazelton, NSW Animal and
Plant Health Laboratories, Menangle
Toxicoses from monensin occur due to accidental access to medicated feed, errors in mixing and deliberate
feeding of a ration formulated for a less sensitive species ... Read More
Mannheimia pleuritis and bronchopneumonia in young merino lambs | Posted August 2007
Written by: Bruce Watt, DV Central Tablelands; Patrick Staples, OAI
This report describes an outbreak of Mannheimia spp pneumonia in two to four week old lambs ... Read More
A case of Mycoplasma ovis | Posted March 2015
Written by: Linda Searle, District Veterinarian, Deniliquin
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
Mycoplasma ovis in north western NSW | Posted July 2012
Written by: Libby Read, District Veterinarian, North West Livestock Health and Pest Authority
Mycoplasma ovis (formerly Eperythrozoon ovis) causes the disease known as eperythrozoonosis in
sheep flocks throughout Australia ... Read More
Mycotoxicosis in a merino flock | Posted February 2015
Written by: Megan Davies, District Veterinarian, Narrabri / Walgett
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
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 ↑
N
Nardoo (Marsilea drummondii) causing polioencephalomalacia, cardiomyopathy and mortality in
first-cross ewes in the Coonamble district | Posted May 2022
Written by: Jillian Kelly, District Veterinarian Local Land Services, Coonamble and Anne Jordan,
Pathologist, Elizabeth Macarthur Agricultural Institute, Menangle
This Nardoo poisoning case is the first documented in sheep in the Coonamble district, which also featured an
unusual case presentation ... Read More
National sheep health monitoring project | Posted June 2015
Written by: Samantha Allan, Senior Veterinary Officer, Animal Biosecurity, NSW Department of Primary
Industries, Tamworth Agricultural Institute
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
Neonatal lamb mortality | Posted March 2016
Written by: Scott Ison, Murray Local Land Services, Albury
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
Neurogenetic progressive ataxia in merino sheep: segmental axonopathy and cerebellar abiotrophy |
Posted March 2011
Written by: Bruce Watt and Mandi Carr, Tablelands Livestock Health and Pest Authority and Zoe Spiers and
Kaiser Dawood, State Veterinary Diagnostic Laboratory, Menangle
Studies conducted in the mid 1980s on progressive ataxia in Merino sheep identified two distinct clinical and
pathological syndromes ... Read
More
Nitrate poisoning in merino ewes introduced to a canola stubble | Posted July 2017
Written by: Bruce Watt, Central Tablelands LLS, and Patrick Staples and Erika Bunker, EMAI, Menangle
Ruminants are particularly susceptible to nitrate poisoning because rumen microflora convert nitrate to
ammonia via highly toxic nitrites ... Read More
Nitrate poisoning in yarded sheep | Posted May 2021
Written by: Kelly Wood, District Veterinarian, Nyngan
In August 2020, 20 two-year-old ewes ex 400 were found dead having been yarded without feed overnight
following classing, having been run on native pasture immediately prior to yarding ... Read More
Non infectious causes of reproduction wastage in sheep | Posted March 2011
Written by: Greg McCann - Senior District Veterinarian, Central West LHPA
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
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 ↑
O
Ocular squamous cell carcinoma in merino ewes | Posted November 2016
Written by: Ella Duldig, PIRSA Animal Health Officer and Dr Jeremy Rogers, Senior Veterinary Officer,
Murray Bridge, South Australia
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
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
OJD High Mortality | Posted May 2007
Written by: John Evers, DV Young & Bruce Watt, DV Central Tablelands
High losses reported in the unvaccinated wether portion of a mixed merino flock ... Read More
OJD Staggers | Posted September 2011
Written by: BR Watt, Tablelands LHPA, Eliz Braddon, Lachlan LHPA, Sarah Robinson, NSW DPI and Tony Morton,
Hume LHPA
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 | Posted May 2007
Written by: Tony Morton, District Veterinarian, Wagga Wagga RLPB
Discharging abscesses, granulomatous lesions in Wiltshire Horns ... Read More
On-farm animal welfare self-assessment | Posted December 2019
Written by: Nigel Brown, District Veterinarian, Glen Innes
In this presentation, the basic practical premise is offered that good animal welfare is the result of good
animal husbandry. As such, it means looking after the well-being and health of animals as well as possible ...
Read more
An outbreak of haemonchosis in ewes on pastures previously grazed by cattle | Posted June 2024
Written by: Bruce Watt, Central Tablelands Local Land Services, Bathurst, Garry Telford,
'Glendower', Vittoria and Brown Besier, Brown Besier Parasitology, Albany WA
In late April-early May an outbreak of haemonchosis occurred in a mob of merino ewes despite them
being drenched on 22 March onto pastures that had almost entirely run cattle ...
Read more
Ovine Johnes Disease | Posted August 2007
Written by: Eliz Braddon, DV Young
A producer worried about thin sheep, with sporadic losses, but finding no relief with a thorough
drenching program ... Read More
Ovine hypocalcaemia conundrums | Posted March 2012
Written by: Bruce Watt, Tablelands Livestock Health and Pest Authority, Bathurst
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
Ovine arthritis, 2019, where are we and where do we want to be? | Posted December 2019
Written by: Ian Marsha, Narelle Salesa, Leah Strouda, Des
McRaeb, Mominul Islamc, Martina Jelocnikc, Sam Gilchrista, Mark
Hazeltona, and Adam Polkinghorned
a EMAI, NSW DPI, Menangle, NSW; b Jerilderie Veterinary Clinic, NSW; c Genecology Research Centre,
University of the Sunshine Coast, QLD; d Department of Microbiology, Nepean Hospital, NSW Health Pathology,
Penrith, NSW
In 2015, arthritis was ranked 10th in a priority list of 23 diseases that affect the red meat sheep
industry, highlighting its significance as a disease ... Read more
Ovine mastitis outbreak caused by suspected bite wounds to the udder | Posted March 2012
Written by: Maria Sanchez, Marta Borobia, Luis M. Ferrer, Aurora Ortin,
Jose M. Gonzalez and Delia Lacasta
Animal Pathology Department, Veterinary Faculty,
University of Zaragoza. Spain
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
Ovine metabolic conditions encountered in Central West LHPA | Posted March 2012
Written by: Greg McCann BVSc, Senior District Veterinarian, CWLHPA
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
Ovine respiratory disorders - a global overview | Posted March 2016
Written by: Peter Windsor, Professor Emeritus, Faculty of Veterinary Science, University of Sydney
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
Ovine segmental axonopathy | Posted Noveber 2024
Written by: Leah Johnson1,2, Katie Eager1,2, Brendon O'Rourke1 and Imke
Tammen2
1 Elizabeth Macarthur Agricultural Institute, Department of Primary Industries,
Menangle
2 Sydney School of Veterinary Science, The University of Sydney, Camden
Ovine segmental axonopathy is an autosomal recessive inherited disorder in Merino sheep presenting as progressive
hindlimb ataxia, which has been identified in both Australia and New Zealand ... Read More
Ovine segmental axonopathy in two fine wool merino flocks | Posted August 2017
Written by: Petrea Wait1, Katherine Loring2, Patrick Shearer3, Tom
Westermann3 & Erika Bunker3, Peter Windsor4
District Veterinarian, Cooma1; 5th year veterinary student, Charles Sturt University2;
State Veterinary Diagnostic Laboratory, EMAI, Menangle3; Professor Emeritus and Specialist
Veterinarian (Pathbiol., Small Ruminant Health Management), University of Sydney4
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
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 ↑
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Phalaris poisoning syndromes | Posted September 2016
Written by: Associate Professor Peter Windsor, Farm Animal Health, University of Sydney
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 | Posted September 2012
Written by: David Rendell, 60 Portland Rd Hamilton 3300
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 | Posted
December 2012
Written by: Simon Choi (Veterinary student, University of Sydney), Anon,
Erika Bunker (State Veterinary Laboratory) and
Bruce Watt (Tablelands Livestock Health and Pest Authority, Bathurst)
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, District Veterinarian, Central Tablelands Local Land Services and Erika Bunker,
Veterinary Pathologist, NSW Department of Primary Industries
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
Lupinosis (Phomopsin) affected cereal hay kills sheep | Posted July 2019
Written by: Ellen Arney, Finniss and Jeremy Rogers, Senior Veterinary Officer, Murray Bridge
In this case a stubble paddock that had been suspected of being affected with lupinosis (phomopsin) was
not grazed, but was oversown with a cereal crop that was subsequently cut for hay ... Read More
Phomopsin infected lupin stubble contaminated the subsequent cereal hay crop killing sheep with
lupinosis | Posted December 2019
Written by: Ellen Arney 1040 Dry Plains Rd, Finniss, SA, and Jeremy Rogers, Senior Veterinary Officer,
PIRSA PO Box 469 Murray Bridge, SA
Lupinosis, a disease of sheep and cattle, is caused by the fungus Diaporthe toxica that grows on the
seeds and stalks of lupins and known to be highly toxic ... Read more
Phosphorus deficiency in sheep - a case report | Posted March 2012
Written by: Bill Johnson, District Veterinarian, Tablelands LHPA, Goulburn
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
Photosensitisation and cholangiohepatopathy (Dikoor) in lambs grazing a forage brassica crop contaminated
with Panicum gilvum | Posted July 2013
Written by: Bruce Watt, (Tablelands LHPA Bathurst),
Belinda Hackney (formerly of NSW DPI Bathurst),
Erika Bunker (State Veterinary Diagnostic Laboratory, Menangle)
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 | Posted March 2012
Written by: Evelyn Walker, District Veterinarian, Central West LHPA, Dubbo
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
Photosensitisation in young sheep grazing lucerne Medicago sativa | Posted November 2020
Written by: Bonnie Andrew, CSU Wagga and Bruce Watt and Emilee Johnstone, Central Tablelands LLS
Primary photosensitisation occurs following the ingestion of a photodynamic agent, including the plants St
John's wort, buckwheat and biserrula, while these sheep were grazing dryland lucerne... Read More
Pig's ear (Cotyledon orbiculata) suspected of causing mass glycoside intoxication and sudden death
in ewes | Posted May 2021
Written by: Katelyn Braine, DV, Riverina LLS, Gundagai and Leah Johnson, Veterinary Pathologist, NSW DPI,
EMAI, Menangle
This case report describes a disease investigation of sudden death in 83 of 738 composite ewes that gained
access to pig's ear (Cotyledon orbiculata) in an unoccupied house garden ... Read more
Pilot study on the role of environmental factors on footrot outbreaks | Posted September 2021
Written by: Sandy Nguyen, Lachlan Ingram and Om Dhungyel, Sydney School of Veterinary Science, The
University of Sydney
Pilot study to examine the role of environmental factors on the outbreaks of ovine footrot has been initiated
as a retrospective study on the outbreaks in the Monaro region, south east of NSW ... Read more
Pilot study to understand the sheep health management issues in sheep farms in NSW | Posted September
2021
Written by: Jessica Boyd-weetman and Wendy Muir, School of Life and Environmental Sciences, The University
of Sydney, and Om Dhungyel, Sydney School of Veterinary Science, The University of Sydney
There is increasing pressure on farmers to ensure that they maintain high levels of welfare and health for
their animals whilst also ensuring their practices are environmentally sustainable ... Read more
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 | Posted March 2011
Written by: Rosalie Harvey BSc BVSc Hons and Helen McGregor DV LHPA Hume
Sheep are more commonly infected by T. gondii than other livestock such as cattle or pigs ... Read more
Plant poisonings of sheep in summer rainfall, non-temperate, eastern Australia | Posted March
2023
Written by: Shaun Slattery, LLS, Narrabri
In this paper, the author draws on his 30 years' experience and the observations of colleagues to describe the
current field presentation, key clinical signs, key diagnostic tools, case management and prevention of plant
poisonings in this part of Australia ... Read More
Pneumonic and vertebral abscesses in a Dorper lamb | Posted March 2011
Written by: Evelyn Walker, District Veterinarian, Central West Livestock Health and Pest Authority,
Dubbo
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 of lambs on mature Bambatsi Panic (Panicum coloratum) pasture | Posted November
2022
Written by: SM Slattery, North West Local Land Services, Narrabri, NSW
This paper reports an investigation into saponin poisoning in black-headed Dorper lambs following introduction
to mature Bambatsi panic dominated pasture on a property in the Wee Waa district ... Read more
Polioencephalomalacia in adult ewes in the tablelands of NSW | Posted March 2012
Written by: Nicole Burns, Charles Sturt University Veterinary Science Student
Alan Taylor, Central West Livestock Health and Pest Authority, Molong
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 | Posted August 2009
Written by: Steve Eastwood, District Veterinarian, New England LHPA, Armidale
In March 2008, 30 mixed aged, merino ewes died. The 500 head flock had been ... Read More
Polioencephalomalacia with gross brain lesions in feedlot lambs | Posted May 2023
Written by: Benn Bryant, District Veterinarian, Central West Local Land Services, Dubbo
Six fedlot lambs were found dead with no premonitory signs over a one-week period ... Read More
Post-mulesing arthritis | Posted March 2012
Written by: Greg Curran, Veterinary Officer, DPI, Broken Hill
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
Possible Arboviral Disease in Sheep | Posted September 2011
Written by: Matt Ball- District Veterinarian Lismore
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
Posthitis (pizzle rot) in British breed rams| Posted October 2019
Written by: Bruce Watt, Central Tablelands Local Land Services and Zoe Spiers, Elizabeth Macarthur
Agricultural Institute
This report details two cases of low prevalence posthitis in rams from which Corynebacterium spp were
isolated. This condition differs from ulcerative balanitis in rams, which is of unknown aetiology ... Read More
Prepartum vaginal prolapse and dystocia in Babydoll Southdown ewes | Posted August 2023
Written by: Lou Baskind, South East Local Land Services, Braidwood
This case report details an unusual occurrence of prepartum vaginal prolapse and dystocia in sheep, and
a possible association with deficiency of Vitamin D ... Read More
Presumed lightning strike | Posted March 2012
Written by: Bruce Watt, Tablelands Livestock and Health Authority, Bathurst
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
Prevalence and management of ovine brucellosis in South Australia | Posted June 2024
Written by: Jeremy Rogers, Senior Veterinary Officer, PIRSA, Murray Bridge, SA
During May and June 2010, 45 commercial sheep flocks were selected at random to assess the prevalence of OB in
the sheep population of south-eastern South Australia ... Read More
Primary photosensitisation in sheep caused by St. John's wort | Posted August 2023
Written by: Bernadette O'Brien, final year veterinary student at Charles Sturt University and Bruce Watt,
District Veterinarian, Central Tablelands Local Land Services, Bathurst
A sheep producer reported skin lesions in 50% of 400 ewes with lesions more severe and prevalent in the
lambs-at-foot ... Read
More
Primary copper poisoning in two flocks of ewes | Posted August 2009
Written by: Bruce Watt, DV Bathurst, Tablelands LHPA and
Tristan Maugauret, Veterinary Intern, The University of Sydney
In southeastern Australia the most common cause of copper poisoining is ... Read More
Pyrrolizidine alkaloid poisoning of sheep | Posted March 2012
Written by: D Salmon
Riverina Livestock Health and Pest Authority
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
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 ↑
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Rahnella aquatilis as a cause of septicaemia and death in a merino ewe | Posted December
2018
Written by: Petrea Wait, District Veterinarian, LLS Monaro and Chani Barrett, 5th year
veterinary student, Sydney University
Rahnella aquatilis is a relatively rare enteric gram-negative rod that has been found in fresh water,
soil, snails, certain beetles, and isolated human clinical specimens ... Read More
Ram semen culture results | Posted August 2010
Written by: Greg McCann, Senior District Veterinarian, Central West LHPA, Dubbo
Culture results from ram semen indicate a range of organisms found, including ... Read More
Rationale for conducting a vitamin B12 response trial in an area with no indication of cobalt
deficiency | Posted December 2010
Written by: Bruce Watt and Jeff Eppleston, Tablelands Livestock Health and Pest Authority
We conducted a response trial in which half of a mob of crossbred lambs
was treated with vitamin B12 at lamb marking ... Read More
Red gut in lambs grazing lucerne | Posted December 2017
Written by: Kate Peffer, District Veterinarian CTLLS
Red gut or intestinal torsion is a severe intestinal accident seen in sheep grazing lush green pasture. The
disease is characterized by acute abdominal pain, collapse and death with most cases reported as sudden death
... Read More
Reflections of an ethologist | Posted April 2013
Written by: Geoff Green, Livestock Health Ranger, New England LHPA
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
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
Reproductive performance of a small Dorper flock in North-West NSW | Posted January 2014
Written by: Libby Guest, North West Livestock Health and Pest Authority, Narrabri
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
A review of vitamin B12 supplementation in sheep | Posted April 2013
Written by: Elizabeth Barter, final year veterinary student, University of Sydney
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
Review of a prolonged Brucella ovis eradication | Posted March 2012
Written by: Michaela Woolford, CSU veterinary student and
Libby Read, District Veterinarian North West LHPA
Brucella ovis infection is a major cause of epididymitis and infertility in rams, resulting in
reproductive failure and significant economic losses ... Read More
Revisiting the transmission of Taenia ovis (sheep measles) in Australia | Posted June
2015
Written by: David J Jenkins, School of Animal and Veterinary Sciences, Charles Sturt University, Wagga
Wagga, NSW
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
Rickets in lambs on grazing cereal crops | Posted March 2012
Written by: Belinda Edmonstone, DV Lachlan LHPA Forbes
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
Rock fern poisoning | Posted August 2007
Written by: Andew Thompson, DV Northern Slopes
Significant mortality following good rain with sheep collapsing on handling for ... Read More
Rock fern 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
Ruptured cranial mesenteric artery causing sudden death in a late term triplet bearing ewe | Posted
April 2020
Written by: Bruce Watt, Central Tablelands Local Land Services, Bathurst, Gordon Refshauge, NSW Department
of Primary Industries, Cowra and Anne Jordan, Elizabeth MacArthur Agricultural Institute, Menangle
In this case, a mature, late-term, first-cross ewe bearing full-term triplets, died from blood loss from a
ruptured cranial mesenteric artery ... 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 ↑
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Salmonella case in lambs | Posted March 2011
Written by: Nik Cronin, District Veterinarian, Lachlan Livestock Health and Pest Authority, Forbes
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
Sarcosporidiosis in Merino hoggets fed in confinement during drought | Posted November 2020
Written by: Amanda Walker, District Veterinarian, Northern Tablelands LLS, Zoe Spiers, Veterinary
Pathologist, EMAI and Pedro Pinczowski, Veterinary Pathologist, EMAI
In this case sarcosporidiosis, caused by infection with Sarcocystis tenella, was identified as the
cause of clinical neurological disease in a mob of Merino hoggets.... Read More
Scabby mouth (Orf) in vaccinated sheep | Posted August 2008
Written by: Bruce Watt, DV Central Tablelands
Scabby mouth is a common disease of Australian sheep. On properties that vaccinate, subsequent disease is
rare... Read More
Secondary copper poisoning in ewes on subterranean clover | Posted August 2021
Written by: Bruce Watt, Central Tablelands LLS, Bathurst NSW
This paper describes an outbreak of copper poisoning in British breed cross ewes on clover dominant pastures,
on five properties on the Central Tablelands, between October 2020 and February 2021 ... Read More
Secondary photosensitisation in lambs due to crystal associated cholangiohepatopathy while grazing common
heliotrope (Heliotropium europaeum) probably caused by Panicum sp. toxicity | Posted
September 2015
Written by: Scott Ison, Murray Local Land Services, Albury and Helen Peam, Veterinary Pathologist,
Elizabeth McArthur Agricultural Institute
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
Selected respiratory tract diseases of sheep in Spain | Posted April 2013
Written by: Delia Lacasta, Veterinary Faculty of Zaragoza, Spain
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
Selenium deficiency on the Southern Tablelands in 2014 | Posted April 2015
Written by: Alexandra Stephens, District Veterinarian Yass (South East LLS)
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
Acute selenium intoxication in lambs | Posted August 2022
Written by: Bruce Watt, Central Tablelands LLS, Bathurst; Paula Gonzalez-Rivas, Virbac and Erika Bunker,
EMAI, Menangle
Selenium intoxication is a risk when livestock are overdosed by miscalculating the dilution of Selenium or the
dose by bodyweight, or else through simultaneous administration of selenium-containing formulations ... Read More
Acute selenium intoxication in lambs | Posted August 2022
Written by: Elsa Glanville, Mackinnon Project, FVAS, University of Melbourne
Acute selenium toxicity in lambs results in cardiac failure causing lethargy, respiratory distress,
neurological disturbance and death ... 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
A series of AWKD events — chronic glomerulopathies in Australian White Lambs | Posted November 2024
Written by: Emily Winkenwerder and Pedro Pinczowski
This case became the latest addition to a collection of cases with suspected inherited congenital renal disease in
Australian White lambs ... Read More
A severe outbreak of both congenital and acquired copper deficiency in Spanish lambs | Posted August 2024
Written by: Maialen Zinkunegi, Isabel Cuartielles, Raquel García, Arthur Cobayashi, Pilar Trejo, Miriam Lazpita,
Paula Jiménez, Janire Fernandez, Lucía Rodriguez, Álex Gómez, María Climent & Delia
Lacasta
Affected newborn lambs presented with severe ataxia, causing inanition and death. Additionally, 2-3% of the
fattening lambs of the previous lambing period developed hindlimb paresis after weaning ... Read More
Sheep deaths associated with the administration of controlled-release capsules | Posted December
2012
Written by: Bill Johnson, District Veterinarian, Goulburn
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
Sheep and goat pox | Posted June 2015
Written by: Bruce Watt (Central Tablelands Local Land Services, Bathurst) and Colin Scrivener (Veterinary
Consultant, Charles Sturt University, Wagga Wagga)
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 lice control - investments and activities | Posted August 2009
Written by: Jane Littlejohns, Project Manager, Animal Health and Welfare, AWI and Johann Schroderb, Program
Manager, Animal Health, Welfare and Productivity, AWI
AWI has invested over $4 million on lice research and lice extension since 2000 ... Read More
Sheep lice: Industry situation and changing control practices | Posted March 2011
Written by: Peter James, Queensland Alliance for Agriculture and Food Innovation (QAAFI), University of
Queensland
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 | Posted September 2012
Written by: S. Popp, Faculty of Agriculture, Food and Natural Resources, University of Sydney and J.
Eppleston, Tablelands Livestock, Health and Pest Authority, Bathurst and B. R. Watt, Tablelands Livestock,
Health and Pest Authority, Bathurst and S Mansfield, Faculty of Agriculture, Food and Natural Resources,
University of Sydney and R. D. Bush, Faculty of Veterinary Science, University of Sydney, Camden
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 ? | Posted
March 2012
Written by: Ian Masters, District Veterinarian, Gundagai
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
Significant losses due to sulphur toxicity in ewes following consumption of gypsum | Posted April
2020
Written by: Nik Cronin and Belinda Edmonstone, District Veterinarians, Central West Local Land Services,
Forbes and Pedro Pinczowski, Veterinary Pathologist, Elizabeth Macarthur Agricultural Institute,
Menangle
Sulphur toxicity was confirmed as the cause of death of approximately 200 ewes with the source of sulphur
being a pile of gypsum in the paddock in which the sheep were grazing ... Read More
Small flowered mallow (marshmallow, Malva parviflora) intoxication (marshmallow staggers) in the
Coonamble District following drought-breaking rain | Posted February 2021
Written by: Jillian Kelly, District Veterinarian, Coonamble
Drought-breaking rain received by the Coonamble district in autumn 2020 saw abundant growth of the
small-flowered mallow (Malva parviflora) and many subsequent cases of staggers in sheep flocks ... Read More
Sorghum-Associated neuroaxonal degeneration in Dorper lambs | Posted December 2018
Written by: Megan Davies, District Veterinarian, Narrabri and Thomas Westermann, Pathology Resident,
EMAI
Sorghum is one of several cultivated plants that contain cyanogenic glycosides, which undergo conversion to
hydrogen cyanide (HCN) following ingestion ... 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
A sporadic chondrodysplasia of unknown aetiology in lambs | Posted April 2013
Written by: BR Watt, Tablelands Livestock Health and Pest Authority, Bathurst NSW
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
Staggers in medium wool merinos | Posted February 2015
Written by: Dr Cecily Moore, DV Coonabarabran
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
Staphylococcus aureus mastitis in a jaundiced ewe | Posted February 2015
Written by: Bruce Watt, Central Tablelands Local Land Service, Bathurst and Patrick Shearer, State
Veterinary Diagnostic Laboratory, Menangle
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
Stock disposal scheme Posted December 2019
Written by: Henry Clutterbuck, District Veterinarian, Goulburn
Due to drought conditions, lack of feed availability and cost, and excessive numbers of stock on the market,
stock owners may be unable to transport or sell their stock or afford feed and/or water for stock ... Read more
Study into reports of nephritis in lambs in the South Australian mallee | Posted April 2017
Written by: Jeremy Rogers, Senior Veterinary Officer, State Flora Office, Murray Bridge, South Australia
& Elise Matthews, Veterinary Officer, EAS Manager & Kirsty Cordon, Veterinary Officer; PIRSA,
Glenside, South Australia
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
Study of lesser virulent footrot in NSW | Posted September 2021
Written by: Karen Smith, Richard Whittington, Navneet Dhand and Om Dhungyel, Sydney School of Veterinary
Science, The University of Sydney
The impact of lesser virulent strains of D. nodosus is becoming more apparent in NSW with traditional
treatments and eradication programs often failing ... Read More
A continuing study into reports of nephritis in lambs in the SA Mallee | Posted September 2018
Written by: Jeremy Rogers, Senior Veterinary Officer, PIRSA, Murray Bridge, SA
A previously reported study into an apparently increasing incidence of Nephritis in lambs in the Murray-
Mallee area of SA is continuing ... Read More
Sudden death caused by phalaris in some ewes | Posted May 2019
Written by: J Rogers, DVO, PIRSA, Murray Bridge, SA and Dr Effie Lee, Veterinary Pathologist, Gribbles,
SA
A producer found 15 Dohne ewes dead and one moribund... Read More
Superphosphate poisoning in sheep | Posted July 2012
Written by: Eliz Braddon, Senior District Veterinarian Lachlan LHPA
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 neurotoxic sudden death in ewes drinking from a farm dam recently treated with copper sulphate
to kill blue green algae | Posted April 2020
Written by: Nik Cronin, District Veterinarian Central West Local Land Services, Forbes and Alan Sharrock,
Lachlan Valley Veterinary Clinic, Forbes
This report outlines a case in which approximately 100 young merino ewes died suddenly, following treatment of
a dam using copper sulphate, with the cause of death suspected to be a cyanobacterial neurotoxin ... 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 Sarcoptes infection in sheep and humans | Posted March 2012
Written by: Phillip Kemsley, District Veterinarian Casino
The owner reported hair loss around the eyes and ears in a 17 month old Damara x Dorper ewe ... Read More
Swayback in Western Division, NSW | Posted March 2012
Written by: Dermot McNerney, Veterinary Officer, Dareton,
Kaiser Dawood, Trainee Pathologist, EMAI
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
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Three cases of summer pneumonia | Posted February 2022
Written by: Nik Cronin and Belinda Edmonstone, District Veterinarians, Central West LLS, Forbes
Summer pneumonia is the term used to describe pneumonia and pleurisy in sheep, most frequently seen in late
summer and autumn ... Read More
Thymic tissue found extrathoracically in Dorper lambs | Posted August 2010
Written by: Libby Read, District Veterinarian, North West LHPA (Narrabri-Walgett)
Submadibular, bilateral swellings appear in small numbers of Dorper lambs ... Read More
Tick borne diseases of sheep | Posted August 2010
Written by: Bruce Watt, Tablelands LHPA, Bathurst and
Michelle Dennis, Faculty of Vet Sc, University of Sydney
An overview of diseases spread by ticks in sheep that Australian veterinarians ... Read More
Toxoplasmosis abortion in a small Mid-North Coast sheep flock | Posted November 2020
Written by: Ian Poe District Veterinarian, North Coast LLS, Kempsey, Elsa Glanville, Mackinnon Project
FVAS, University of Melbourne and Anne Jordan, EMAI
The owner of a small flock of sheep contacted the district veterinarian after five out of six ewes aborted, of
which two were maidens, whilst three were on their second pregnancy.... Read More
Transit tetany in lambs post crutching, one may have responded to thiamine treatment | Posted May
2023
Written by: Jeremy Rogers, Senior Veterinary Officer, PIRSA, Murray Bridge, SA
Transit tetany typically occurs in sheep subjected to transport stress, but it can also occur in sheep
deprived of feed or water during yarding and handling ... Read more
Treatment of Chronic Copper Toxicity in Sheep | Posted January 2019
Written by: Belinda Edmonstone, Central West LLS, Forbes
Preventing ongoing losses from the haemolytic crisis that results when copper is suddenly released is aimed at
stripping out the copper that has accumulated in the liver ... Read more
Trial of treatment options for feedlot lambs | Posted March 2011
Written by: Belinda Edmonstone - DV Lachlan LHPA and
Greg Curran- Technical Specialist (Western Division), Broken Hill I&I NSW
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
Tribulus terrestris Staggers in the Coonabarabran area | Posted December 2019
Written by: Sarah Maher, District Veterinarian, Coonabarabran
The occurrence of the stagger has a long association with drought, where summer storms have occurred on bare
paddocks and the subsequent predominating pasture was Tribulus terrestris ... 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
Turning the worm | Posted March 2015
Written by: Stephen Love, NSW Department of Primary Industries, Armidale NSW
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
Two outbreaks of scabby mouth (orf infection) in small ruminants on the Central Tablelands of NSW |
Posted August 2017
Written by: James Tamone (Final Year veterinary student, Charles Sturt University, Wagga) and Bruce Watt
(Central Tablelands Local Land Services, Bathurst)
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
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Ulcerative balanitis in rams - 'An enigmatic disease of unknown aetiology' | Posted November
2016
Written by: Bruce Watt, Central Tablelands LLS and Petrea Wait, South East LLS and Shaun Slattery North
West LLS
Balanitis or balanoposthitis is occasionally encountered, especially in young rams, usually associated with
joining. In Australia the condition was first described in young Border Leicester rams but has subsequently
been seen in a range of breeds ... Read More
Ulcerative posthitis in rams | Posted May 2022
Written by: Manali Subramaniam, 4th year DVM student, University and Charlotte Cavanagh, Local
Land Services, Bourke
Ulcerative posthitis is commonly found to affect wethers residing in areas of high rainfall with lush
pastures, with the highest prevalence reported in Australian mobs ... Read More
Urea poisoning in sheep in a drought lot | Posted March 2020
Written by: Bruce Watt, District Veterinarian, Central Tablelands Local Land Services, Bathurst
This report describes a case of urea poisoning that occurred when sheep were inadvertently fed urea in a
mineral mix ... Read More
Urolithiasis due to an unbalanced diet in a Spanish lamb feedlot | Posted March 2012
Written by: Carlos Alcay, Luis Miguel Ferrer, Juan Jose Ramos,
Marta Ruiz de Arcaute, Marta Borobia and Delia Lacasta
Animal Pathology Department, Veterinary Faculty,
University of Zaragoza, Spain
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 a flock of ram lambs | Posted November 2020
Written by: Genevieve Hughes, Veterinary Student, USYD and Henry Clutterbuck, South East LLS
A sheep producer reported sudden death in a mob of Border Leicester rams less than 18 months of age, with a
number of the remaining mob showing some degree of staggers and/or drooping ears... Read More
Urolithiasis in feedlot lambs | Posted October 2014
Written by: Eliz Braddon, Riverina Local Land Services
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 crossbred wethers on commercial pellets | Posted August 2007
Written by: Bruce Watt, DV Central Tablelands
Deaths among fed-lot crossbred wether lambs with swellings in the prepuce and ... Read More
The use of Ovilis Footvax® as part of a virulent footrot control and eradication program | Posted November 2024
Written by: Felicity Wills, Ruminant Technical Advisor, Coopers Animal Health
There are two vaccine types used in the control of virulent footrot, strain-specific vaccines, or a multi-serotype
vaccine ... Read More
Uterine torsion and rupture in a full term multiparous ewe | Posted October 2014
Written by: Bruce Watt (Central Tablelands Local Land Services, Bathurst)
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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Vertebral abscesses causing hindlimb paresis in lambs | Posted October 2010
Written by: Bruce Watt, DV Central Tablelands
Vertebral osteomyelitis is generally assumed to be an ascending infection post tail docking and/or mulesing
... Read More
Very sudden death in White Suffolk ram lambs | Posted May 2007
Written by: Harry Suddes DV Murray
Sixteen, otherwise healthy, lambs found dead in a pile ... Read More
Vitamin A deficiency in sheep and cattle in North Western NSW | Posted December 2019
Written by: Megan Davies, District Veterinarian, Narrabri, Shaun Slattery, District Veterinarian, Narrabri
and Judy Ellem, District Veterinarian, Gunnedah
During drought conditions between 2014 and 2019, District Veterinarians investigated multiple cases of Vitamin
A deficiency, presenting a wide range of clinical signs, including anorexia, ill thrift, diarrhoea, blindness,
convulsions, paralysis, recumbency, abortion ... Read more
Vitamin B12 in sheep on the NSW Southern Tablelands | Posted March 2011
Written by: Bill Johnson, District Veterinarian, Goulburn
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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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
Weaner management project with Pfizer Eryvac - findings after the first year | Posted August 2008
Written by: Bruce Watt, DV Central Tablelands et al.
High mortality and poor preformance in merino lambs is a well documented problem ... Read More
Weaner sheep colitis of uncertain aetiology: a case study | Posted April 2017
Written by: Scott Ison, Murray Local Land Services, Deniliquin, Erika Bunker, NSW State Veterinary
Diagnostic Laboratory, Menangle and Jim Walsh, Coopers Animal Health, Bendigo
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
Welfare revolution of topical anaesthesia on wool sheep farms in Australia: is there a place for zylazine
and / or NSAIDs ? | Posted March 2012
Written by: Peter Windsor, Crystal Espinoza, Sabrina Lomax, Faculty of Veterinary Science, University of
Sydney, Camden
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
What lice? | Posted March 2015
Written by: Narelle Sales, Microbiological Diseases and Diagnostics Research, Elizabeth Macarthur
Agricultural Institute
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
White muscle disease in spring-born lambs on clover dominant Central Tablelands pastures | Posted May
2021
Written by: Phoebe Bellingham (final year veterinary student) CSU, Wagga Wagga and Bruce Watt, Central
Tablelands LLS, Bathurst
The owner reported 12 lambs were markedly lame, and on mustering several lambs were reluctant to walk and a
few collapsed ... Read More
Widespread primary photosensitisation of unknown aetiology in sheep in the NSW Riverina | Posted
November 2015
Written by: Dan Salmon, Linda Searle and Roseanne Farrant, Deniliquin; Des McRae, Jerilderie; Mark Corrigan
and Scott Ison, Albury
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
WormBoss: capturing the information from Integrated Parasite Management in sheep | Posted April
2013
Written by: Lewis Kahn, Animal Science (W49) school of Environmental and Rural Science,
University of New England, Armidale NSW
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
Within flock prevalence of non-footrot lesions in sheep and the impact of pre-lambing iodine
supplementation on the expression of foot abscess | Posted July 2012
Written by: Bruce Watt and Jeff Eppleston, Tablelands Livestock Health and Pest Authority
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
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Yersiniosis causing stillbirths in maiden ewes | Posted March 2023
Written by: Dr Meg Parsons, District Veterinarian, LLS, Northern Tablelands
The owner of a mixed farming property noticed a high number of stillborn lambs over the first five days of
lambing in his maiden ewes ... Read More
Yersinia pseudotuberculosis enteritis in adult sheep | Posted March 2016
Written by: Nigel Gillan, District Veterinarian, Mudgee
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
Yersinia enterocolitica abortion in ewes | Posted September 2012
Written by: Bruce Watt, Tablelands Livestock Health and Pest Authority
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
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Zinc phosphide toxicity in crossbred ewes | Posted March 2016
Written by: Gabrielle Morrice, DV Narrandera
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