HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Brinks, J. S. Articles by Urick, J. J. Search for Related Content PubMed Articles by Brinks, J. S. Articles by Urick, J. J.

Predicting Wholesale Cuts of Beef from Linear Measurements Obtained by Photogrammetry¹

U. S. Department of Agriculture and Montana Agricultural Experiment Station

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.

¹ This study was conducted under Western Regional Project W-1, The Improvement of Beef Cattle through the Application of Breeding Methods, at the U. S. Range Livestock Experiment Station, Miles City, Montana, in cooperation with the Montana Agricutural Experiment Station, Bozeman, Montana, and the Great Plains Institute of Animal Reproduction, Topeka, Kansas. Photographs were taken and the points on the animals were plotted by the Institute's staff under the leadership of Vic Loebsack, Harold Hill, and Haley Houghton.

² Beef Cattle Research Branch, Animal Husbandry Research Division, ARS, Denver, Colorado.

³ U. S. Range Livestock Experiment Station, Miles City, Montana.