Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/9015
Title: Using Australian Sheep Breeding Values to increase lean meat yield percentage
Contributor(s): Gardner, Graham E (author); Williams, Anne  (author); Siddell, J (author); Ball, Alexander (author); Mortimer, S (author); Jacob, RH (author); Pearce, KL (author); Hocking-Edwards, JE (author); Rowe, James B  (author); Pethick, David W (author)
Publication Date: 2010
DOI: 10.1071/AN10144
Handle Link: https://hdl.handle.net/1959.11/9015
Abstract: This study describes the impact of Australian Sheep Breeding Values (ASBV) for post-weaning weight (PWWT), C-site fatness (PFAT) and eye muscle depth (PEMD) on lamb carcasses within the Australian Sheep Industry CRC Information Nucleus Flock. These results are taken from the 2007 drop progeny, consisting of ~2000 lambs slaughtered at a target weight of 21.5 kg. These lambs were the progeny of sires selected to ensure genetic diversity across various production traits. As expected, the PWWT ASBV increased weight at slaughter, and hot standard carcass weight. Dressing percentage was markedly improved by increasing PEMD ASBV, thus prime lamb producers will be maintaining an animal of similar weight on farm, but delivering a markedly larger carcass at slaughter. Lean meat yield % (LMY%) was highest in the progeny of sires with low PFAT ASBV, which decreased whole carcass fatness and increased muscularity. PWWT ASBV affected carcass composition but had little impact on LMY%, as the decreased fatness was largely offset by increased bone, with relatively little change in muscle content. Lastly, PEMD ASBV had little impact on whole carcass LMY%, but did appear to cause some level of muscle redistribution to the higher value loin cuts, in turn increasing the value of the carcass lean.
Publication Type: Journal Article
Source of Publication: Animal Production Science, 50(12), p. 1098-1106
Publisher: CSIRO Publishing
Place of Publication: Australia
ISSN: 1836-0939
1836-5787
Field of Research (FOR): 070204 Animal Nutrition
070202 Animal Growth and Development
070203 Animal Management
Peer Reviewed: Yes
HERDC Category Description: C1 Refereed Article in a Scholarly Journal
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