Effects of NPY Gene on Total Number of Eggs at 300 Days of Age in Donglan Black-bone Chicken

摘要

In this study,PCR-RFLP technique was employed to detect the genetic polymorphism of NPY gene and analyze the effects of various genotypes on the total number of eggs at 300 days of age in 135 Donglan black-bone chicken. According to the results,there were three genotypes( AA,AB and BB) of NPY gene in Donglan black-bone chicken group. Different genotypes exhibited significant effects( P < 0. 05) on the total number of eggs at 300 days of age. The total number of eggs at 300 days of age of AA genotype was significantly higher than that of BB genotype( P < 0. 05). Therefore,the polymorphic site of NPY gene could be used as a candidate molecular marker that affects egg laying in Donglan black-bone chicken.