The continued improvement of genetics, nutrition, and management has resulted in rapid
growth, better feed efficiency, and higher meat yield with competitive prices in the broiler …

Simple Summary The aromatase–estrogen system plays a key role in gonadal sex
differentiation in amphibians, reptiles, and birds during development. In adults of seasonal …

Decreased semen quality is an underlying contributor to age-related subfertility in broiler
breeder roosters. This study investigated the effects of dietary curcumin (derived from …

Physiological mechanisms of seasonal changes in testicular function in birds are not fully
elucidated. The balance between androgens and estrogens and testis sensitivity for …

Male broiler breeders (n= 32) of 55 weeks of age were administered four different doses of
capsulated d-aspartate (DA; 0, 100, 200 or 300 mg kg− 1 day− 1, po (DA0, DA100, DA200 …

Decline in semen quality is considered as a major contributing factor in age-related
subfertility of broiler breeder flocks. This study was aimed to investigate the effect of dietary …

Aim: This study aimed to evaluate the effect of shell supplementation on the regulation of
male reproduction in rats Materials and Methods: The zinc (Zn) level of shell from blood clam …

Excessive aromatase can reduce reproductive performance in aged roosters. Aromatase
inhibitors (AI) can inhibit the aromatase activity and improve the semen quality of aged …

An excessive amount of aromatase enzyme reduces reproductive performance in aging
roosters. Testosterone metabolism by aromatase enzyme is one of the reasons for reduced …

As only 10% of the broiler breeder flock is roosters, their fertility is very important. The rooster
sperm plasma membrane has high concentrations of polyunsaturated fatty acids that are …