Augmentation by Pregnant Mares'Serum of Body Weight Response of Male Turkeys to Testosterone Propionate

Abstract
Following preliminary treatment with pregnant mares'' serum, body weight responses of immature and mature, but sexually inactive, male turkeys to testosterone propionate were considerably augmented when the androgen was administered concurrently with pregnant mares'' serum. The serum alone was without appreciable effect on body weight. Whether the observed augmentation is an effect of gonadotropin or of some other constituent of the serum is not known.