Alteration of Activity of Thyroid Gland of Beef Cattle with Testosterone.

摘要: Summary and Conclusions1. Testosterone injected intramuscularly at the rate 1 mg/kg of body wt per week in beef heifers steers from 500 to 800 lb live had following effects: a) Increased average daily gain decreased feed requirements unit gain, b) weight thyroid glands, c) secretory activity gland, d) Decreased stores thyroxine gland. 2. Correlations between gland growth are suggested as indicating a possible mode action testosterone affecting cattle. 3. A method is described using time asphyxiation thiouracil-treated mice measure content