Alteration of Daily Gain, Feed Efficiency and Carcass Characteristics in Beef Cattle with Male Hormones1

Publisher Website
Google Scholar
Abstract
The weekly intramuscular injection of testosterone at the rate of 1 mg./kg. of body weight resulted in an increase in rate of gain and a decrease in feed required per unit gain. Testosterone-treated heifers had a higher percent of chuck than control heifers and testosterone-treated heifers and steers had a higher percent of round and a lower percent of loin than control calves. The weekly intramuscular injection of methyl androstenediol at the rate of 1 mg./kg. of body weight had little or no effect on rate of gain, economy of gain or carcass characteristics. Copyright © . .