Sudden death of six heifers due to a hepatotoxin Unusual presentation: Sudden death of three heifers in one area of a paddock within a 5-day period. Case study at the 2021 NABS Masterclass (18 mins) Above: A map of the water square showing locations of cases and other...
Bacterial pneumonia in recently-weaned steers Unusual presentation: Within a week of arriving on a new property, 14 steers died and another 100 were lethargic. Time and location: November 2020, south Kimberley region in WA. Case definition: Weaner steers that are...
Paralysis tick kills 22 cows Unusual presentation: 22 Brahman cows from a mob of 40 die after moving to a new property. Above: One of the Brahman cows found dead in the paddock. Time and location: Far North Queensland, September 2020. Case definition: Recently...
Rectal haemorrhage and sudden death – possible JHS Unusual presentation: Severe milk drop in dairy cows, 13 of 700 head affected, 3 dying within 24 hours of showing signs. Above: Two cows post-mortemed had extensive haemorrhages across all serosal surfaces....
Nitrate-nitrite poisoning in mature bulls Unusual presentation: Death overnight of 15 bulls being held in cattle yards following routine examination. Time and location: February 2020, northeast WA. Case definition: Mature Charbray bulls (4-8 years of age) that die...
