The effect of genotype and zeranol implantation on performance of steers grazing Mitchell grass pastures in north-west Queensland

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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Abstract

[Summary]: 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)
Refereed: Yes
Item Status: Live Archive
Additional Information: Published version deposited with blanket permission of the Australian Society of Animal Production.
Depositing User: Mrs Rae Jones
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 (FOR2008): 07 Agricultural and Veterinary Sciences > 0702 Animal Production > 070202 Animal Growth and Development
URI: http://eprints.usq.edu.au/id/eprint/5333

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