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A note on the accuracy of the New Zealand Hennessy Grading Probe and the Danish Fat-O-Meater in measuring fat and muscle thickness in pig carcasses

Published online by Cambridge University Press:  02 September 2010

A. Fortin ,
S. D. M. Jones  and
C. R. Haworth
A. Fortin
Affiliation:
Animal Research Centre, Research Branch, Agriculture Canada, Ottawa, Ontario K1A 0C6, Canada
S. D. M. Jones
Affiliation:
Department of Animal and Poultry Science, University of Guelph, Guelph, Ontario N1G 2W1, Canada
C. R. Haworth
Affiliation:
Department of Animal and Poultry Science, University of Guelph, Guelph, Ontario N1G 2W1, Canada
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Abstract

Two hundred and twenty-four pig carcasses were used to compare the Hennessy Grading Probe and the Fat-O-Meater in their accuracy for measuring fat and muscle thickness (m. longissimus). Accuracy was defined in terms of precision and bias. The precision (relationship between repeated measurements) of the two probes in measuring fat and muscle thickness varied with the probing locations. When differences were detected, the higher precision was found with the Fat-O-Meater. The mean bias in measuring fat thickness was negative for the Hennessy Grading Probe (P < 0·01); however, for the Fat-O-Meater, no mean bias was detected. Furthermore, the extent and the direction of the bias in measuring fat over the range of fat thickness studied varied with the probe and the probing location.

Type
Research Article
Information
Animal Production , Volume 38 , Issue 3 , June 1984 , pp. 507 - 510
Copyright
Copyright © British Society of Animal Science 1984

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References

REFERENCES

Allen, O. B. and Raktoe, B. L. 1981. Accuracy analysis with special reference to the prediction of grassland yield. Biometr. J. 23: 371–388.CrossRefGoogle Scholar
Anonymous. 1982. Canadian agricultural products standards Act. Hog carcass grading regulations. Canada Gaz., Part II 116: 1256–1258.Google Scholar
Fortin, A., Jones, S. D. M. and Haworth, C. R. 1984. A comparison of the New Zealand Hennessy Grading Probe and the Danish Fat-O-Meater for the purpose of hog carcass grading. Meal Sci. 10: 131–144.CrossRefGoogle Scholar
Giles, L. R. 1983. A comparison of the Optical Intrascope, the Hennessy and Chong Fat Depth Indicator and the Danish MFA Probe to predict pig carcass backfat thickness. Meat Sci. 8: 33–40.CrossRefGoogle ScholarPubMed
Jones, S. D. M., Allen, O. B. and Haworth, C. R. 1982. The accuracy of two recording instruments in the measurement of subcutaneous fat thickness in pork carcasses. Can. J. Anim. Sci. 62: 731–738.CrossRefGoogle Scholar
Kempster, A. J., Chadwick, J. P., Jones, D. W. and Cuthbertson, A. 1981. An evaluation of the Hennessy and Chong fat depth indicator, and the Ulster probe, for use in pig carcass classification and grading. Anim. Prod. 33: 319–324.Google Scholar
Kempster, A. J., Jones, D. W. and Cuthbertson, A. 1979. A comparison of the Danish MFA, Ulster and optical probes for use in pig carcass classification and grading. Meat Sci. 3: 109–120.CrossRefGoogle Scholar