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Measurements of back fat thickness on live pigs by ultrasonics

Published online by Cambridge University Press:  01 September 1959

E. East ,
J. Taylor ,
I. T. Miller  and
R. W. Widdowson
E. East
Affiliation:
Unilever Ltd., Food Research Department, Colworth House, Sharnbrook
J. Taylor
Affiliation:
Unilever Ltd., Food Research Department, Colworth House, Sharnbrook
I. T. Miller
Affiliation:
British Oil and Cake Mills Ltd., Pig and Poultry Demonstration Farm, Stoke Mandeville
R. W. Widdowson
Affiliation:
British Oil and Cake Mills Ltd., Pig and Poultry Demonstration Farm, Stoke Mandeville
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Extract

The back fat thickness of 77 live pigs has been measured with an ultrasonic instrument. The method is simple to use and the ultrasonic waves do not harm the pigs. For measurement of a pig on one day, 95% of the mean ultrasonic readings are within ±13·2% of the mean measurements on the carcass.

Evidence for variations between the breeds examined or between sexes is doubtful. By taking repeated measurements on a large number of days, the accuracy of the mean readings for a pig would approach the limit inherent in the method. This limit is determined by small differences between pigs and is estimated to be within ±4·2% for 95% of pigs.

Type
Research Article
Information
Animal Production , Volume 1 , Issue 2 , September 1959 , pp. 129 - 134
Copyright
Copyright © British Society of Animal Science 1959

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References

REFERENCES

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