Case notes on veterinary investigations in sheep, cattle and other species
2021 Autumn edition of case studies
Sheep
Chronic copper toxicity in mature composite ewes grazing subterranean clover dominant pastures
Written by: Jemima Milton, final year student at Charles Sturt University Veterinary School; Bruce Watt, Central Tablelands Local Land Services, Bathurst; and Anne Jordon, Elizabeth Macarthur Agricultural Institute, Menangle
Ewes had been grazing abundant subterranean clover dominant pastures for several months prior to being found dead or acutely ill, with clinical signs of depression, weakness and recumbency, followed by death ... Read More
Eradication of Ovine Brucellosis during joining by 14-day period between removal of infected, and replacement with uninfected, rams
Written by: Frances Zewe, Final year DVM student, Sydney School of Veterinary Science, Sydney NSW and Shaun Slattery, District Veterinarian, North West Local Land Services, Narrabri NSW
The March 2020 pregnancy scanning of 800 spring 2019-joined ewes found no pregnancies in the first 200 head and scanning was discontinued ... Read More
Secondary copper poisoning in ewes on subterranean clover
Written by: Bruce Watt, Central Tablelands Local Land Services, Bathurst NSW
This paper describes an outbreak of copper poisoning in British breed cross ewes on clover dominant pastures, on five properties on the Central Tablelands, between October 2020 and February 2021 ... Read More
Cattle
Phosphorus deficiency in the Riverina, NSW
Written by: Courtney Simkin, District Veterinarian, Riverina Local Land Services, Hay and Alexandra Carleton DVM Graduate 2020, University of Sydney
Four properties surrounding Hay and Hillston in southwestern NSW, suffered morbidities and mortalities of stock during autumn and spring 2019 ... Read More
Spinal abscess caused by Trueperella pyogenes in a bull
Written by: Sophia Johnson & Julianna Brailey, University Sydney Veterinary students, Dr Lyndell Stone, District Veterinarian, Hunter Local Land Services and Dr Mark Hazelton, Veterinary Pathologist, Elizabeth Macarthur Agricultural Institute
This case report describes a spinal abscess in a two-year-old bull, suspected of being affected by Bovine Ephemeral Fever Virus ... Read More
Other
EHV-1 abortion storm on a thoroughbred stud in the Hunter Valley, NSW
Written by: Dr Kristi Arnot, District Veterinarian Hunter Local Land Services and Ebony Harris, final year Veterinary Science Student, Charles Sturt University
Four thoroughbred broodmares in a herd of 10 at a large thoroughbred horse stud aborted over a two-month period, having been vaccinated for EHV-1 ... Read More
Sudden death in sows caused by Clostridium perfringens
Written by: Jeremy Rogers, Senior Veterinary Officer, PIRSA, Murray Bridge, SA and Effie Lee, Veterinary Pathologist, Gribbles Veterinary Pathology, Glenside
Three sows, perfectly normal the previous evenings, had been found dead in the farrowing pens about one week after farrowing ... Read More