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

2017 Spring edition of case studies

Sheep

Fluoroacetate (1080) toxicity in a merino mob
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

Red gut in lambs grazing lucerne
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

Cattle

Are linear singe marks pathognomonic for lightning strike in cattle?
Written by: Bruce Watt, District Veterinarian, Central Tablelands Local Land Services, Bathurst, NSW
While death by lightning strike is difficult to prevent it is an important diagnosis in part because livestock may be insured against it, necessitating proof and in part to exclude of other causes of sudden death ... Read More

Dummy calves due to bovine virus diarrhoea virus (BVDV or pestivirus) in North West
Written by: Megan Davies, District Veterinarian, Narrabri
“Dummy Calves” reported by landholders can mean anything from calves with swollen heads and protruding tongues, to severe muscle spasms and ataxia ... Read More

Theileriosis as a cause of significant mortality in pregnant cattle
Written by: Aziz Chowdhury, District Veterinarian, Greater Sydney LLS and Rod Reece, Veterinary Pathologist, SVDL, DPI, EMAI
Theileria orientalis is an apicomplexan protozoan blood disease of cattle spread by H.longicornis that has been present in Australia since early 1900s and was traditionally regarded as relatively benign ... Read More