Dodt, R. and Thompson, P. J. M. and Coward, A. and Toleman, Mark (1984) The effect of genotype and zeranol implantation on performance of steers grazing Mitchell grass pastures in north-west Queensland. In: 15th Biennial Australian Society of Animal Production Conference: Animal Production in Australia, 13-17 Feb 1984, Armidale, Australia.
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Steers of seven different genotypes were purchased from six locations in north-west Queensland and their liveweight performance was compared while grazing Mitchell grass pastures.
Only small differences were recorded in liveweight gain between steers containing the approximate breed components of Africander 3 Shorthorn 5, Sahiwal 3 Shorthorn 5, Santa Gertrudis, Brahman 4 British 4, and Brahman 6 British 2. The Bos indicus infused steers had annual liveweight gains of 135 compared with 110kg / head / year in the comparable age Hereford group.
Zeranol implantation gave 6% advantage in liveweight gain durin the first 84 d post implantation. This response was consisten across genotype groups. Final liveweight of treated steers was 3% heavier than of untreated steers, although zeranol treatment was given 444 d before slaughter.
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|Item Type:||Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)|
|Item Status:||Live Archive|
|Additional Information:||Published version deposited with blanket permission of the Australian Society of Animal Production.|
|Faculty / Department / School:||Historic - Faculty of Business - Department of Information Systems|
|Date Deposited:||29 Sep 2010 02:50|
|Last Modified:||02 Jul 2013 23:19|
|Uncontrolled Keywords:||effect; genotype; zeranol implantation; performance; steers; Mitchell; Queensland|
|Fields of Research :||07 Agricultural and Veterinary Sciences > 0702 Animal Production > 070202 Animal Growth and Development|
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