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Sudden death due to probable urea toxicity

Sudden death due to probable urea toxicity

Sudden death due to probable urea toxicity Unusual presentation: 100 of 3000 Brahman cattle found dead. Time and location: August 2023, WA​​. Case definition: Cows and bulls found dead in a paddock, some animals with sunken eyes and head down pre-mortem. Disease...
Thrombocytopenia with tick infestation

Thrombocytopenia with tick infestation

Thrombocytopenia with tick infestation Unusual presentation: Sudden death of 19 heifers. Above: Significant abdominal and endocardial haemorrhage, with no clots and blood the consistency of weak red cordial. Time and location: Northern Territory, October 2023​. Case...
Weaners die from ruminal acidosis

Weaners die from ruminal acidosis

Weaners die from ruminal acidosis Unusual presentation: Rapid deterioration and death of 20 freshly weaned cattle from a mob of 400 within one week. Above: Acidotic rumen fluid and severely ulceration and sloughing of abomasum. Above: Timeline showing feeding regime,...
Gross path challenge #11

Gross path challenge #11

Gross path challenge #11 Above: Cerebellum from a feedlot steer (photo from Rick Last, DPIRD WA) DESCRIPTION: Multiple randomly distributed varying sized (2 mm to 8 mm diameter) foci of red discoloration of the parenchyma of the cerebellum involving the grey and white...
Heifers collapse in hindlegs with necrotic myositis

Heifers collapse in hindlegs with necrotic myositis

Heifers collapse in hindlegs with necrotic myositis Unusual presentation: Five young heifers from a mob of 300 Brahman with hindleg collapse. Above: Haemorrhage behind the tibia and ruptured gastrocnemius muscle​. Time and location: March 2023, Queensland. Case...