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 • 10:45am - 11:45am
Cattle Medicine - Metabolic Disorders

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Metabolic disorders include abnormalities of energy and protein nutrition, and deficiencies of the major minerals calcium, phosphorous and magnesium. Most metabolic disorders arise during the period between drying off and the next peak lactation – particularly in the few weeks either side of calving. Effects range from death (hypomagnesaemia, hypocalcaemia), loss of production (ketosis, hypomagnesaemia) through to reproductive failure (hypophosphataemia). The unique carbohydrate metabolism of ruminants makes them susceptible to imbalances between fat (especially fat mobilisation from tissue) and the gluconeogenic precursors that are needed for the Kreb’s cycle to function. Hence, any situation in which this imbalance occurs (obesity, starvation, underfeeding) are at risk of developing ketosis. Deficiencies of phosphorous and magnesium can occur at any time, although magnesium deficiency is usually a problem of the peri-calving period. Calcium deficiency is typically a problem of a period within a few days of calving, is caused by the sudden drain of calcium into the milk at the onset of lactation, and can cause significant losses. All metabolic diseases are preventable by appropriate animal husbandry at critical stages of the production cycle. Thus, whilst veterinarians can successfully treat most affected animals, ensuring that farmers manage their animals to prevent such diseases is a far more cost-effective route to follow.

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 10:45am - 11:45am
Plaza P1 Brisbane Convention and Exhibition Centre