Strategies to Manipulate Progesterone for Improved Ovarian and Fertility Responses in Bovines - A Review

Abstract

Progesterone (P 4 ) is a steroid hormone primarily secreted by the Corpus luteum (CL).

An Approach Study for Reducing the Early Embryonic Loss in Egyptian Buffalo-cows

“…Exposure to an insufficient circulating level of P4 during the growth of the ovulatory follicle is one of the important factors that affect fertility in high producing animals. P4 has a negative feedback effect on LH secretion and it is believed that subluteal phase plasma P4 concentrations result in elevated LH pulse-frequency [20]. It has previously been suggested that low progesterone during early embryonic development may cause pregnancy failure and thereby reduce the pregnancy rate [33].…”