Concentrations of Estrogens, Progesterone and LH During the Ovulatory Cycle of the Laying Chicken [Gallus domesticus]

Abstract

The concentrations of estradiol, estrone, progesterone and LH are reported for blood samples taken at different intervals during the ovulatory cycle of the domestic fowl. In general there appears to exist a consistent relationship between peaks of estradiol and estrone concentrations, on the one hand, and the progesterone peaks, on the other hand.