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Measurement of lamb carcass composition using the velocity of ultrasound

Published online by Cambridge University Press:  24 November 2017

C.A. Miles ,
A.V. Fisher ,
G.A.J. Fursey  and
S.J. Page
C.A. Miles
Affiliation:
AFRC Institute of Food Research, Bristol Laboratory Langford, Bristol BS18 7DY
A.V. Fisher
Affiliation:
AFRC Institute of Food Research, Bristol Laboratory Langford, Bristol BS18 7DY
G.A.J. Fursey
Affiliation:
AFRC Institute of Food Research, Bristol Laboratory Langford, Bristol BS18 7DY
S.J. Page
Affiliation:
AFRC Institute of Food Research, Bristol Laboratory Langford, Bristol BS18 7DY
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Extract

There is a need for objective measurement of the carcass composition of sheep to apply to live animals (selection) and to the carcass itself (classification). Ultrasonic scanning of live sheep has generally produced disappointing results, and tissue depths measured by automatic probes on carcasses have not been as precise as the best visual scores for fatness. The application of the velocity of sound (VOS) technique to lamb carcasses in a previous study (Fisher and Page, 1986) measured composition at a hindlimb and neck site but was not as precise as fat scores in predicting lean proportion. A recent patent describes a method for determining the speed of ultrasound through soft tissues in the vicinity of bone (Miles, Fursey and Page, 1989), allowing measurements to be made across the back through M longissimus thoracis et lumborum and between the spinous processes of the vertebrae. This study uses that method to examine VOS measurements made at sites along the vertebral column in live sheep and carcasses.

Type
Electronics in Animal Production
Information
Proceedings of the British Society of Animal Production (1972) , Volume 1990 , March 1990 , pp. 101
Copyright
Copyright © The British Society of Animal Production 1990

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References

Fisher, A.V. and Page, S.J. (1986). Anim Prod 42, 444.Google Scholar
Miles, C.A., Fursey, G.A.J., and Page, S.J. (1989). Patent Application No 8728368, Patent Office, London.Google Scholar