维生素E对种禽繁殖性能的研究进展OA

As an essential nutrient for breeding poultry,vitamin E plays a critical role in regulating reproductive performance through multiple mechanisms.Its core mechanism involves scavenging reactive oxygen species and inhibiting lipid peroxidation through potent antioxidant activity,thereby protecting the structural integrity of germ cell membranes.In addition,vitamin E regulates the hypothalamic-pituitary-gonadal axis,promotes the secretion of gonadotropins and related sex hormones,and effectively enhances spermatogenesis and follicular development.Additionally,it enhances immune function and alleviates the negative effects of stress on the reproductive system.Studies have shown that supplementing male diets with vitamin E at levels of at least 15 mg/kg significantly improves semen quality and serum testosterone levels.For breeding females,the appropriate dosage varies by species,including 100-200 mg/kg for laying hens,12.5-50 mg/kg for laying ducks,and 30-200 IU/kg for breeding geese,all of which have been shown to effectively enhance laying rate,egg quality,and hatchability.This review systematically summarizes the effects of vitamin E on reproductive performance,antioxidant capacity,and immune function in breeding poultry,aiming to provide a theoretical basis for precise nutritional management in production practice.