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Genetic and production factors that influence the content of intramuscular fat in the meat of prime lambs

Pethick, D.W.ORCID: 0000-0002-3255-7677, Pannier, L., Gardner, G.E.ORCID: 0000-0001-7499-9986, Geesink, G.H., Ball, A.J., Hopkins, D.L., Jacob, R.H., Mortimer, S.I. and Pearce, K.L. (2010) Genetic and production factors that influence the content of intramuscular fat in the meat of prime lambs. In: 3rd EAAP International Symposium on Energy and Protein Metabolism and Nutrition, 6 - 10 September, Parma, Italy pp. 673-674.

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The content of intramuscular fat (IMF) in lambs belonging to different production systems in Australia (Western Australia, New South Wales, South Australia and Victoria) and the effects of genetic and non-genetic factors on IMF content in lamb meat were determined. It was shown that site, sex, sire type and kill group within site and hot carcass weight had significant effects. Lambs at Katanning in Western Australia had a higher IMF percentage compared to those from other sites. Female lambs has 0.20% higher IMF compared to males and Merino sired lambs had 0.42% higher IMF compared to terminal and maternal sired lambs. There were marked differences between kill groups within each site. Hot carcass weight had a positive relationship with IMF, with levels increasing by 1% across the 20 kg range in carcass weight. In conclusion, both genetic and non-genetic factors significantly affect IMF content in lamb meat.

Item Type: Conference Paper
Murdoch Affiliation(s): School of Veterinary and Biomedical Sciences
Publisher: Wageningen Academic Publishers
Copyright: © Wageningen Academic Publishers
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