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.
Wednesday, May 16 • 8:00am - 9:00am
Cattle Medicine - Disorders of the Reproductive System

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Most of the common and important disorders of the reproductive system are consequent upon calving: the uterus has to undergo involution and eliminate the residual infection of calving, oestrous cycles have to be re-established and the cow has to regain the ability to conceive. Most of the losses due to disorders of the reproductive system are chronic –whilst some diseases such as metritis can be spectacular acute disorders, mild disorders such as endometritis and anoestrus are far more common and important. Metritis, which occurs between 4 and 14 days after calving, can be life-threatening and require urgent and vigorous treatment. Endometritis, which occurs after about 3 weeks from calving is common, and is a major cause of conception failure and anoestrus. The condition is relatively easily managed: and, fortunately, cephapirin, as a first-generation cephalosporin, is probably unlikely to be caught up in any restriction of such drugs for veterinary use. Anoestrus is the most important disorder of reproduction. It arises as an interaction between nutrition, the genetics of the cow, the interval between calving and the start of mating and the management of the cow over the period between the latter part of the last lactation and the start of mating. Hormonal treatment regimens (using various combinations of some or all of GnRH, PGF2α, progesterone and eCG) are moderately effective at treating anoestrous cows, but prevention of the disorder through good nutrition and stockmanship is the best long-term solution. High yielding cows are genetically prone to suboestrus, low conception rates and, possibly, uterine infections. They are also prone to disorders such as cystic ovarian disease. The management of high yielding cows, especially in systems that feed a high proportion of pasture forages, can be very challenging.

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 →

Wednesday May 16, 2018 8:00am - 9:00am
Plaza P1 Brisbane Convention and Exhibition Centre