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Association among objective in vivo and post-slaughter assessments of muscularity in lambs

Published online by Cambridge University Press:  23 November 2017

E. A. Navajas ,
A. J. L. Charteris ,
K. A. McLean ,
N. R. Lambe ,
A. V. Fisher ,
L. Bünger  and
G. Simm
E. A. Navajas*
Affiliation:
Scottish Agricultural College, Sustainable Livestock Systems Group, West Mains Road, Edinburgh, EH9 3JG, U.K.
A. J. L. Charteris
Affiliation:
Scottish Agricultural College, Sustainable Livestock Systems Group, West Mains Road, Edinburgh, EH9 3JG, U.K.
K. A. McLean
Affiliation:
Scottish Agricultural College, Sustainable Livestock Systems Group, West Mains Road, Edinburgh, EH9 3JG, U.K.
N. R. Lambe
Affiliation:
Scottish Agricultural College, Sustainable Livestock Systems Group, West Mains Road, Edinburgh, EH9 3JG, U.K.
A. V. Fisher
Affiliation:
The University of Bristol, Division of Farm Animal Science, Langford, Bristol BS40 5DU, U.K.
L. Bünger
Affiliation:
Scottish Agricultural College, Sustainable Livestock Systems Group, West Mains Road, Edinburgh, EH9 3JG, U.K.
G. Simm
Affiliation:
Scottish Agricultural College, Sustainable Livestock Systems Group, West Mains Road, Edinburgh, EH9 3JG, U.K.
*
Email: [email protected]
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Extract

Muscularity of lamb carcasses, which is defined as the depth of muscle relative to dimensions of the skeleton (De Boer et al., 1974), is a commercially important trait in many countries. An objective index of muscularity was defined by Purchas et al. (1991) based on the weights of the muscles around a bone and the bone length. Jones et al. (2002) proposed an objective index to assess in vivo the shape of the muscle in the hind leg using X-ray Computed Tomography (CT), which had a phenotypic correlation of 0.63 with dissection measures of muscularity, as described by Purchas et al. (1991).

Type
Theatre Presentations
Information
Proceedings of the British Society of Animal Science , Volume 2005 , 2005 , pp. 44
Copyright
Copyright © The British Society of Animal Science 2005

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References

De Boer, H., Dumont, B. L., Pomeroy, R. W. and Weniger, J. H. 1974. Manual on E.A.A.P. reference methods for the assessment of carcass characteristics in cattle. Livestock Production Science 1: 151–164.Google Scholar
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Jones, H. E., Lewis, R. M., Young, M. J. and Wolf, B. T. 2002. The use of X-ray computer tomography for measuring the muscularity of live sheep Animal Science 75: 387–399.Google Scholar
Lane, P. W.; Payne, R. W. 1996. GENSTAT for Windows: An Introductory Course (2nd Ed). Lawes Agricultural Trust.Google Scholar
Purchas, R. W., Davies, A. S. and Abdullah, A. Y. 1991. An objective measure of muscularity: Changes with animal growth and differences between genetic lines of Southdown sheep. Meat Science 30: 81–94.Google Scholar