Abstract: Polymorphisms were screened in exons of porcine erythropoietin receptor（EPOR） gene by resequencing exons using PCR amplification of a DNA pool from 5 Beijing
Black pigs and 5 Min pigs. 3 SNPs, g.1147C＞G in exon 2, g.1645G＞A in exon 3 and g.4953C＞T in exon 8, were detected. In which, g.1147C＞G in exon 2 causes an amino acid substitution (Leu＞Val) at position 50 (NP_999457), and g.1645G＞A in exon 3 causes an amino acid substitution (Arg＞His) at position 92. The third SNP, g.4953C＞T in exon 8, was a synonymous varibation. Except for g.4953C＞T, Hardy-Weinberg equilibriums were found at g.1147C＞G and g.1645G＞A in 30 Beijing Black pigs.

Key words: pig; EPOR gene; exon; polymorphism