Pregnancy toxaemia in transported cows Unusual presentation: Seven cows died during or soon after transportation to export yards. Clinical signs were tremors, weakness, recumbency and aggression. Left and central: On post mortem the livers of both cows were swollen,...
Sudden death of heifers due to Tick Fever Unusual presentation: Eleven heifers became lethargic and weak, and then died within 24-48 hours. Above: Post mortem found jaundice throughout the carcass, an enlarged liver and abnormal spleen.Below: Timing of management...
Sudden death due to probable urea toxicity Unusual presentation: 100 of 3000 Brahman cattle found dead. Above: Heifer in lateral recumbency with mild head and neck tremors Time and location: August 2023, WA​​. Case definition: Cows and bulls found dead in a paddock,...
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 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,...
