The AVA Annual Conference is the nation’s premier veterinary event, covering all fields of veterinary science and in 2017 brought together over 920 veterinary professionals and 115 exhibitors.

We hope you will join us for the 2018 AVA Annual Conference in Brisbane, 13-18 May.    
Visit conference.ava.com.au to register.    To download a pdf file of the entire program click here.
Tuesday, May 15 • 2:30pm - 3:30pm
Cattle Medicine - Neurological Disease

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The presence of a neurological lesion is suggested by a change in behaviour, mental status, gait, posture and balance, or abnormalities of the special senses. Examination of the neurological system of the adult cow presents some special challenges due to the size and temperament of cattle. Nonetheless, the same principles apply as for any animal - the purpose is to establish whether a neurological abnormality exists and, if so, to determine the site and nature of the lesion. During the examination, it will be necessary to differentiate between signs attributable to the four components of the nervous system (brain, cranial nerves, spinal cord, peripheral nerves). Disorders of the neurological system in post-weaning cattle are much more likely to be of infectious origin or due to toxicities than to other causes. Cattle with congenital neurological disorders are unlikely to survive beyond calf-hood, so such lesions, along with neoplasia and CNS trauma are uncommon in older cattle. Thus, bacterial infections of the brain or meninges (e.g. Listeria monocytogenes, Histophilus somni), spinal abscesses and clostridial toxins (tetanus, botulism) are common infectious causes, whilst thiamine deficiency, magnesium deficiency, lead toxicity and grass toxicities (e.g. ryegrass staggers) are common dietary accidents . But there are also a great many rare toxic causes of neurological disorders, some of which require careful diagnosis to eliminate the specific aetiological factors that have causes the disease. It is important not to forget that there are important exotic/notifiable causes of neurological diseases – of which rabies, spongiform encephalopathy and, perhaps, Aujeszky’s disease are of very considerable biosecurity importance.

avatar for Tim Parkinson

Tim Parkinson

Tim Parkinson is Professor of Farm Animal Reproduction & Health at Massey University, New Zealand. He graduated from Bristol University and initially worked in cattle practice and cattle AI in the UK. After his PhD in reproductive physiology at Nottingham University, he lectured in... Read More →

Tuesday May 15, 2018 2:30pm - 3:30pm
Plaza P1 Brisbane Convention and Exhibition Centre