Endocrine Abstracts

In birds similar to mammalian species, the reproductive performance in females deteriorates with age. In the present study, relationships between the growth of preovulatory follicles (PF), reproductive aging and sex steroids were investigated using young hens with long clutch (YLC), old hens with long clutch (OLC) and old hens with short clutch (OSC). 1) hens were killed 1.5 and 14.5 h after assumed ovulation. 2) YLC hens were killed 3.5 h after treatments with LH and/or amino...