A Yersiniosis outbreak in cows and weaners Unusual presentation: 43 of 170 animals became lethargic, had diarrhoea and 16 died within 48 hours of the onset of clinical signs. Above: Affected animals became lethargic, dehydrated and had abdominal pain. Time and...
Annual ryegrass toxicity in yarded bulls Unusual presentation: Fifteen bulls with respiratory and nervous signs, three dying within a few days of the onset of clinical signs. Above: A severely affected bull – has a wide-based stance and is unwilling to move....
Yellow-wood poisoning of heifers Unusual presentation: Nineteen heifers showing neurological signs and dying within the space of a week. Above: Both heifers had widespread jaundice and swollen livers and kidneys. Time and location: March 2021, mid coast Queensland....
Acute oxalate poisoning of merino ewes Unusual presentation: 70 mature merino ewes found dead and another 12 recumbent within 4 days. Time and location: February 2021, central west Queensland. Case definition: Ewes (6-10 weeks after joining) become weak, show signs...
Bovine hypertensive syndrome in mature cows Unusual presentation: Thirteen cows died or became recumbent within two weeks of being drafted and put onto supplementary feed. Time and location: November 2020, northern WA. Case definition: Ataxia, recumbency and death...