[Influence of somatotropic hormones of the anterior pituitary gland on the postembryonal change of body weight and size in hypophysectomized pigeons].

The effect of hypophysectomy and of a successive treatment with LTH and STH on growth and weight gain was investigated in pigeons, 2-6 weeks of age. LTH stimulates as well as STH the growth retarded by hypophysectomy. Either hormone not only prevents the decrease of body weight caused by hypophysectomy but even produces an evident increase. The growth: weight-ratio approximates better to the value of normally developed animals in case of LTH-treatment than in case of STH-treatment.