Polioencephalomalacia in cattle in New Zealand fed chou moellier (Brassica oleracea)

Polioencephalomalacia in cattle in New Zealand fed chou moellier (Brassica oleracea)
Peer reviewed

Abstract

Polioencephalomalacia was diagnosed clinically in 26 heifers from a herd of 99 grazing chou moellier (Brassica olcracca). Clinical signs included ataxia, recumbency, blindness and aimless walking. Characteristic polioencephalomalacic autofluorescence was seen under long ultraviolet radiation of four fresh brains examined in the veterinary clinic and two formalin-fixed brains sectioned and examined in the laboratory. Haemorrhage and malacia were noted grossly and microscopically in the cranial colliculus, thalamus and hippocampus of two brains sectioned in the laboratory, while multifocal vasculitis was seen in one brain. High sulphur concentrations of 8500 mg/kg DM in the chou moellier and a recent change in grazing management were the most likely causes of the outbreak.

Access to the full text of this article is available:

through another providers website:

If you're a member or subscriber and believe you should have access:

Login

Otherwise:

Register for an account

Request new password

The whole of the literary matter of the New Zealand Veterinary Journal is copyright Taylor and Francis, Downloading this article signifies agreement with the terms and conditions of electronic access.