Progesterone & Oocyte Quality

Effects of Progesterone Supplementation before Artificial Insemination on Oocyte Quality     Prof. Richard Pursley Michigan State University (USA)

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Dr. J. Richard Pursley is currently a Professor of Animal Science at Michigan State University. His research efforts are focused on ovarian mechanisms that regulate fertilityAbility of a living organism to reproduce. From a zootechnical point of view: ability to give birth to a calf, a lamb, a goat or a piglet. in cattle, particularly lactating dairy cows. Dr. Pursley is codeveloper of the Ovsynch-cattle synchronization technology that is utilized around the world to effectively control time to first and subsequent artificial inseminations. Dr. Pursley’s laboratory is currently investigating the impact of circulating concentrations of progesteroneSteroid hormone secreted by the corpus luteum of the ovary which has the property of making the endometrium suitable for implantation, maintenance and development of the fertilized egg. (Progesterone also results in multiple activities for the endometrium, myometrium, cervix, vagina and udder.). It inhibits GnRH secretion by feedback action on the pituitary. during the growth of the ovulatory follicleSmall secretory or excretory cavity. Ovarian follicles grow until ovulation or female gamete emission. on fertilityAbility of a living organism to reproduce. From a zootechnical point of view: ability to give birth to a calf, a lamb, a goat or a piglet. of dairy cows and heifers.