The Influence of the Oral Administration of Diethylstilbestrol on Certain Carcass Characteristics of Beef Cattle

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Abstract
Four investigations were made on 92 beef cattle in an attempt to determine whether orally administered diethylstilbestrol had any influence on carcass characteristics. Feeding of 0 to 20 mg of diethylstilbestrol per animal daily for periods as long as 243 days failed to provide evidence that carcass weight, grade, degree of finish and the composition of the 9-10-11th rib cut or the area of the longissimus dorsi muscle between the 11th and 12th rib is significantly or consistently associated with the oral administration of this drug. Variations in average daily gains regardless of ration treatment were more consistently associated with differences among these carcass characteristics. The conclusion drawn from these data, however, does not infer that feeding of diethylstilbestrol produces no effect of the carcass, for to accept this assumption is to conclude that the effect upon the performance of the animal in the feedlot is without consequence to the carcass tissues.

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