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Prediction of carcass composition in heavy-weight grass-fed and grain-fed beef cattle

Published online by Cambridge University Press:  02 September 2010

R. Priyanto ,
E. R. Johnson  and
D. G. Taylor
R. Priyanto
Affiliation:
Faculty of Animal Science, Bogor Agricultural University, Bogor, Indonesia
E. R. Johnson
Affiliation:
Department of Farm Animal Medicine and Production, The University of Queensland, Queensland 4072, Australia
D. G. Taylor
Affiliation:
department of Animal Production, The University of Queensland, Gatton College, Lawes, Queensland 4343, Australia
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Abstract

The effects of breed and feeding on the prediction of carcass fat and carcass muscle using rump ‘P8’ subcutaneous fat thickness were investigated in heavy-weight beef carcasses (277 to 512 kg). Hot side weight, eye muscle area and their combination added to fat thickness were evaluated as additional predictors. The predictions of carcass composition from grass-fed steers were validated on data from grain-fed steer carcasses. There were differences between breeds and feeding regimes in the level of tissue proportions at a given fat thickness, but no differences in regression slopes. Fat thickness alone was, therefore, not an accurate indicator of the proportions of side fat or side muscle in heavy-weight carcasses. In the grain-fed steers, the correlations between P8 and tissue proportions were relatively strong, and the addition of hot side weight and eye muscle area, alone or in combination, did not significantly improve the predictions. Conversely, in grass-fed steers where the relationships between carcass composition and fat thickness were weaker, the addition of hot side weight and eye muscle area made a significant contribution to prediction. In the predictions of tissue weights, hot side weight and eye muscle area when added to fat thickness, significantly contributed to the prediction of side muscle weight for both feeding systems. These three variables did not account for the observed differences between breeds or feeding regimes in the proportion or weight of fat, nor in the proportion of muscle; but they effectively eliminated these groups' differences in the estimation of muscle weight.

Keywords

beef cattlecarcass compositioncereal feedinggrass feeding
Type
Research Article
Information
Animal Production , Volume 57 , Issue 1 , August 1993 , pp. 65 - 72
Copyright
Copyright © British Society of Animal Science 1993

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References

Allen, D. M., Merkel, R. A., Magee, W. T. and Nelson, R. H. 1968. Variation in some beef carcass compositional characteristics within and between selected weight and fat thickness ranges, journal of Animal Science 27:1239–1246.CrossRefGoogle Scholar
Australian Meat and Live-stock Corporation. 1986. Technical manual of Australian meat. Part I. Beef, veal, sheepmeat, fancy meats. AMLC, Sydney.Google Scholar
Australian Meat and Live-stock Corporation. 1990. Statistical review July, 1989 June, 1990. AMLC, Sydney.Google Scholar
Brungardt, V. H. and Bray, R. W. 1963. Estimate of retail yield of the four major cuts in the beef carcass. Journal of Animal Science 22: 177–182.CrossRefGoogle Scholar
Butterfield, R. M. 1965. The relationship of carcase measurements and dissection data to beef carcase composition. Research in Veterinary Science 6: 24–32.CrossRefGoogle ScholarPubMed
Charles, D. D. and Johnson, E. R. 1976. Breed differences in amount and distribution of bovine dissectible fat. Journal of Animal Science 24: 332–341.CrossRefGoogle Scholar
Cole, J. W., Orme, L. E. and Kincaid, C. M. 1960. Relationship of loin eye area, separable lean of various beef cuts an d carcass measurements to total carcass lean in beef. Journal of Animal Science 19: 89–100.CrossRefGoogle Scholar
Cole, J. W., Ramsey, C. B. and Epley, R. H. 1962. Simplified method for predicting pounds of lean in beef carcasses. Journal of Animal Science 21: 355–361.CrossRefGoogle Scholar
Cross, H. R., Carpenter, Z. L. and Smith, G. C. 1973. Equations for estimating boneles retail cut yields from beef carcasses. Journal of Animal Science 37:1267–1272.CrossRefGoogle Scholar
Guenther, J. J., Bushman, D. H., Pope, L. S. and Morrison, R. D. 1965. Growth and development of the major carcass tissues in beef calves from weaning to slaughter weight, with reference to the effect of plane of nutrition. Journal of Animal Science 24: 1184–1191.CrossRefGoogle Scholar
Harrington, G. and Kempster, A. J. 1977. Beef carcase yields. Institute of Meat Bulletin, no. 95, pp. 2–15.Google Scholar
Henderson, D. W., Goll, D. E. and Kline, E. A. 1966. Relationships of muscling and finish measurements from three different groups of beef carcasses wit h carcass yield. Journal of Animal Science 25: 323–328.CrossRefGoogle Scholar
Henrickson, R. L, Pope, L. S. and Hendrickson, R. F. 1965. Effect of rate of gain of fattening beef calves on carcass composition. Journal of Animal Science 24: 507–513.CrossRefGoogle ScholarPubMed
Johnson, E. R. and Charles, D. D. 1976. An evaluation of the Australian Beef Carcase Appraisal System. Australian Veterinary Journal 52: 149–154.CrossRefGoogle ScholarPubMed
Johnson, E. R. and Priyanto, R. 1991. Mechanisms for improving the prediction of carcase composition using subcutaneous fat thickness. Proceeding of the 37th international congress of meat science and technology, Kulmbach, pp. 123–126.Google Scholar
Johnson, E. R. and Vidyadaran, M. K. 1981. An evaluation of different sites for measuring fat thickness in the beef carcass to determine carcass fatness. Australian Journal of Agricultural Research 32: 999–1007.CrossRefGoogle Scholar
Kempster, A. J., Cuthbertson, A. and Harrington, G. 1976. Fat distributio n in steer carcasses of different breeds and crosses. Animal Production 23: 25–34.Google Scholar
Moon, J. B. 1980. An investigation of alternative sites for measuring fat depth in beef carcases. Promotional Thesis. Slaughtering and Meat Inspection Branch, Queensland Department of Primary Industries, Brisbane.Google Scholar
Mukhoty, H. and Berg, R. T. 1971. Influence of breed and sex on the allometric growth patterns of major bovine tissues. Animal Production 13: 219–227.Google Scholar
Murphey, C. E., Hallett, D. K., Tyler, W. E. and Pierce, J. C. 1960. Estimating yield s of retail cuts from beef carcasses. Journal of Animal Science 19:1240 (abstr.).Google Scholar
Powell, W. E. and Huffman, D. L. 1968. An evaluation of quantitative estimates of beef carcass composition. Journal of Animal Science 27:1554–1558.CrossRefGoogle Scholar
Priyanto, R., Johnson, E. R. and Taylor, D. G. 1992. The use of subcutaneous fat thickness to predict muscle and fat in grass-fed and grain-fed domestic beef carcases. Proceedings Australian Society of Animal Production 19: 88.Google Scholar
Statistical Analysis System Institute. 1985. SAS user's guide: statistics, version 5 edition. SAS Institute, Cary, NC.Google Scholar
Waldman, R. C, Tyler, W. J. and Brungardt, V. H. 1971. Changes in the carcass composition of Holstein steers I associated with ration energy levels and growth. Journal of Animal Science 32: 611–619.CrossRefGoogle ScholarPubMed
Zembayashi, M. and Dake, H. 1978. Effects of nutritional planes on beef carcass composition an d muscle-bone ratio. Japanese Journal of Zootechnical Science 49: 670–679.Google Scholar