Abstract: Follicle stimulating hormone (FSH) is one of important pituitary hormone, by which regulating animal breeding activities. A large number of research results show that it is a significant relation between FSHβ subunit gene polymorphism and animal breeding performance, with the focus on porcine reproductive traits of molecular marker-related research, the study found that FSHβ subunit gene on the pig litter size have a significant impact. As a result, research mutation of FSHβ subunit gene function domain on its albumen function, and mammal breeding performance effect, in order to increase productive level, it has important theory and practice significance.

Key words: FSHβ subunit gene; breeding performance; genetic polymorphism; PCR-SSCP; PCR-RFLP