Abstract:

Reproductive endocrine hormone has important effects on follicle development, ovulation and fertilization of livestock. The researching progress on the relations between litter size of livestock and polymorphism of reproductive hormone and their receptors genes including gonadotrophin releasing hormone (GnRH), follicle stimulating hormone (FSH), luteinizing hormone (LH), prolactin (PRL), inhibin (INH), and estrogen was reviewed, and it was hoped to be assisted to the mark assisted selection of reproductive traits in livestock.