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Carcass Specific Gravity and Carcass Composition in Cattle and the Effect of Bone Proportionality on this Relationship^1,2,

Ohio Agricultural Research and Development Center, Wooster, Ohio 44691

Abstract

Thirty-six steers of varying weight and degrees of fatness were used to study the relationship between carcass specific gravity and carcass composition, and to study the effect of bone proportionality upon this relationship. Specific gravity of the carcass was highly correlated with carcass water (0.94), protein (0.89), and fat (–.96) composition, and regression equations were in good agreement with previously published work. Bone proportionality within the range included in this study (11.7 to 18.6% separable bone) did not alter the relationship between carcass specific gravity and carcass composition.

¹ Approved for publication as Journal Article No. 68-73 by the Associate Director of the Ohio Agricultural Research and Development Center, Wooster.

² This work was partially supported by a grant from the U. S. Brewers Association, Inc., 1625 Eye St., N. W. Washington, D. C. 20006.

³ The authors wish to acknowledge Dr. C. R. Weaver for assisting with the statistical analyses. S. W. Kock was on sabbatical leave from Department of Animal Science, University of Natal, Pietermaritzburg, So. Africa.