Ratios and Percents as Measures of Carcass Traits

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Abstract
Carcass data collected on 467 yearling Hereford steers over a 4-year period were used to study methods of carcass analysis with particular reference to linear adjustments for differences in weight. The results indicate that the use of ratios or percents involving weight as the denominator does little more than change the sign of the relationship between the trait and weight, and, therefore, will not be a satisfactory weight adjustment procedure. Treatment effects on carcass traits may actually be masked by the use of ratios or percents. Workers who think that percent is a trait rather than an adjustment procedure should consider whether percent is the best trait or the best method available to them for measuring the trait. Pounds of retail cuts adjusted for carcass weight by linear regression will reflect carcass composition; however, it has not been commonly used for this purpose. The application of these results is discussed in relation to the producing and carcass grading segments of the beef industry.

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