Abstract
The data used in the study were on 38 Hereford steers raised at the United States Range Livestock Experiment Station, Miles City, Montana, during 1961–62. Relationships of live weight and linear distances with the wholesale carcass cuts were studied. Linear distances were obtained by photogrammetric procedures. The amount of variation among animals in percentages of wholesale cuts was small as indicated by standard deviations and coefficients of variation. Correlations and partial regressions on live weight indicated that, as live weight increases, a greater proportion is added to the forequarter and especially in the cheaper cuts. Prediction equations developed from linear distances and live weight indicate high accuracy in predicting pounds of the various wholesale cuts and somewhat less accuracy in predicting percent of chilled carcass of the wholesale cuts. Comparisons of predicted and actual pounds and percent of wholesale cuts, adjusted to a 1,000-lb. live weight basis, by sire progeny groups indicated a fairly high degree of accuracy in ranking sire groups especially for chilled carcass, hindquarter, round, and loin.
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