藏猪是我国高海拔特有猪种，为了解藏猪繁殖性能的遗传潜力和基因多样性，利用PCR－RFLP技术测定了202头藏猪ESR、FSHβ和PRLR 3个繁殖性状主效基因位点的基因型多态性，并与文献报道的国内外猪种进行比较。结果显示藏猪群体ESR、FSHβ和PRLR优势基因型分别为BB型、AB型和AA型，3个位点基因型分布均符合哈迪－温伯格平衡。藏猪群体3个繁殖性状主效基因位点都有报道的有利基因型，且有利等位基因频率较高，说明藏猪在这3个基因位点可能具有优良繁殖性能的遗传潜力。

Tibet pig is a special Chinese indigenous pig breed, which could survive in high-altitude areas of Tibet. In the present study, the genotypes of RSR, FSHß, and PRLR gene, the three known major genes of reproductive traits, were identified in 202 Tibet pig individuals. The results showed that the predominant genotypes of RSR, FSHß, and PRLR gene were BB, AB and AA, respectively. The genotype frequencies of the three genes were in Hardy-Weinberg equilibrium. The frequencies of desired alleles of the three genes were higher than those of other alleles, which indicated that Tibet pig had a good potential for improving reproductive traits.