THE LEVELS OF FSH AND LH IN THE PITUITARY OF THE EWE IN RELATION TO FOLLICULAR GROWTH AND OVULATION

Abstract
SUMMARY: The levels of follicle-stimulating hormone (FSH) and luteinizing hormone (LH) have been determined in the anterior lobe of the pituitary of ewes killed at precise stages of the oestrous cycle, during anoestrus, pregnancy, lactation, and in virgin ewes. A marked drop in the content of both FSH and LH has been demonstrated during the ovulatory period of the cycle. The values obtained are discussed in relation to the state of the ovarian follicles.