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

2020-21 Summer edition of case studies


Nitrate poisoning in yarded sheep
Written by: Kelly Wood, District Veterinarian, Nyngan
In August 2020, 20 two-year-old ewes ex 400 were found dead having been yarded without feed overnight following classing, having been run on native pasture immediately prior to yarding ... Read More

Pig's ear (Cotyledon orbiculata) suspected of causing mass glycoside intoxication and sudden death in ewes
Written by: Katelyn Braine, District Veterinarian, Riverina Local Land Services, Gundagai and Leah Johnson, Veterinary Pathologist, NSW Department of Primary Industries, Elizabeth Macarthur Agricultural Institute, Menangle NSW
This case report describes a disease investigation of sudden death in 83 of 738 composite ewes that gained access to pig's ear (Cotyledon orbiculata) in an unoccupied house garden ... Read More

White muscle disease in spring-born lambs on clover dominant Central Tablelands pastures
Written by: Phoebe Bellingham (final year veterinary student) Charles Sturt University, Wagga Wagga and Bruce Watt, Central Tablelands Local Land Services, Bathurst
An owner reported 12 lambs markedly lame, and on mustering several lambs were reluctant to walk and a few collapsed ... Read More


Nitrate poisoning in transported Brahman weaners fed organically fertilised Rhodes Grass (Chloris gayana) hay
Written by: Jack Donkin, Veterinary Student, Charles Sturt University and Elizabeth Bolin, District Veterinarian, North Coast Local Land Services
A group of cattle arrived in the early hours at a property near Casino, NSW, after a long journey from Queensland. The cattle were unloaded into a holding yard where they were supplied Rhodes grass (Chloris gayana) hay ... Read More


Porcine Encephalomyocarditis
Written by: Dr Kristi Arnot, District Veterinarian Hunter Local Land Service and Hunter McDougall Monk, final year Veterinary Science Student Charles Sturt University
A farmer reported that 17 piglets had died in the previous twenty-four hours with seven additional piglets found dead that morning, with all piglets being six weeks of age ... Read More

Sudden death in camels, suspected from Clostridium perfringens type A infection
Written by: Linda Searle, District Veterinarian, Deniliquin
Many veterinarians have little to no experience dealing with uncommon species. This case shows that much of what is known from commonly-dealt-with species is also applicable to other species ... Read More



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