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.
Thursday, May 17 • 3:00pm - 4:00pm
Cattle Medicine - Practical Therapeutics

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After the therapeutic rationale, the next most important consideration in choosing a treatment is that the vast majority of cattle, and of various products produced by them, are ultimately destined for human consumption. Accordingly, the selection of drugs for use in production animals must always take into consideration drug residue levels in tissues and products and, consequently, the interval between treatment and the resumption of sale of food products from that animal. Similarly, the site of administration may not always be the most convenient: intramuscular administration should be into the neck (low value meat) rather than the more-accessible rump. Principles such as the ability of drugs to penetrate different tissues are similar to those of other species, but it is important to remember the importance of milk as a place in which the pH ‘trap’ can sequester drugs. The cost of the drug is also an important factor to bear in mind: is it necessary to use an ‘expensive’ drug if a ‘cheap’ one is nearly as good? Or does an ‘expensive’ drug with a nil milk withholding period actually work out cheaper than a ‘cheap’ drug with a long withholding period? Veterinarians only have direct control over Prescription Animal Remedies, which means that substances such as anthelmintics, trace-element supplements, metabolic treatments and some vaccines are largely out of the veterinarian’s control. However, decisions made around the use of these materials is at least as important, in terms of herd health, as the PARs that veterinarians do control. Antibiotics are probably the most widely used PAR, so veterinarians should have a good knowledge of the mode of action and tissue activities of the antibiotics that they use. Given the international attention that is currently being focused on antimicrobial resistance, veterinarians must ensure that they practice ‘good product stewardship’, not only to reduce the risk of AMR, but also to reduce the risk of losing access to different classes of antibiotics. Sadly, the same lens does not appear to be applied to non-veterinary sales of anthelmintics. Sedatives, corticosteroids, reproductive hormones, non-steroidal anti-inflammatory drugs and fluid therapy make up the balance of the veterinary pharmacopeia. The use of these drugs is less contentious than that of antibiotics: nonetheless good product stewardship and attention to withdrawal period remain important.

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 →

Thursday May 17, 2018 3:00pm - 4:00pm
Plaza P1 Brisbane Convention and Exhibition Centre