The maintenance of pregnancy in hypophysectomized goats

Abstract

For goats at about Day 90 of gestation, LH but not prolactin is an essential component of the luteotrophic complex. However, prolactin may interact with LH in its luteotrophic functions in non-pregnant goats and in pregnant goats before Day 60, and a placental lactogen could replace prolactin in this gonadotrophic function. This possibility may be clarified by current experiments with hysterectomized-hypophysectomized goats, and goats hypophysectomized earlier in pregnancy.