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

2023 Autumn edition of case studies

Sheep

Acute lupinosis with concurrent contagious ophthalmia and polioencephalomalacia in weaned lambs in the South Australian Mallee
Written by: Jeremy Rogers, Strathalbyn, SA and Dr Julie Wayne BVSc(hons), MVSC, MANZCVS (Pathobiology), DACVP (Anatomic Pathology) Gribbles VETLAB
After three days hoggets were taken off lupin stubble and were noticed with neurological signs of "star gazing", "walking into fences", "stiff back legs", and some died ... Read More

Monensin toxicity in sheep grazing a travelling stock reserve
Written by: Amy Masters, Central Tablelands Local Land Services, Orange and Mark Hazelton, NSW Animal and Plant Health Laboratories, Menangle
Toxicoses from monensin occur due to accidental access to medicated feed, errors in mixing and deliberate feeding of a ration formulated for a less sensitive species ... Read More

Primary photosensitisation in sheep caused by St. John's wort
Written by: Bernadette O'Brien, final year veterinary student at Charles Sturt University and Bruce Watt, District Veterinarian, Central Tablelands Local Land Services, Bathurst
A sheep producer reported skin lesions in 50% of 400 ewes with lesions more severe and prevalent in the lambs-at-foot ... Read More

Cattle

Lesions on the nose, teats and feet of a cow; vesicular diseases excluded and photosensitisation diagnosed
Written by: Bruce Watt, Central Tablelands Local Land Services, Bathurst
In this case the owner of a small herd of cows on the Central Tablelands of NSW called the Emergency Animal Disease Hotline to report skin lesions that looked like blisters on the nose, feet and teats of one of 40 cows ... Read More