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Relationship of Live Animal Measurements to Various Carcass Measurements in Beef^{1, 2,}

Michigan Agricultural Experiment Station,⁴ East Lansing

Abstract

The relationship between live-animal measurements with carcass attributes was investigated using the data from 31 long yearling steers. Live-animal measurements and carcass measurements were all highly repeatable with the exception of spring of ribs, the width of pins and the length from the 13th rib to hooks.

With constant live weight, circumference of body at fore flank was associated with 81 % of the variation in ribeye area, while circumference of middle, rear flank, hind leg above hock and width of rump were also significantly related to ribeye area. Live-animal weights and various live-animal measurements showed high relationships to such wholesale cuts as chuck, rib, shortloin and sirloin plus round.

¹ Journal Article 2379, Michigan Agricultural Experiment Station.

² A portion of the research reported in the Ph.D. Thesis of the senior author to the School for Advanced Graduate Studies, Michigan State University.

³ Present address: Department of Animal Husbandry, University of Tennessee, Knoxville.

⁴ This study was conducted in cooperation with the North Central Regional Project NC-1, The Improvement of Beef Cattle Through Breeding Methods.