SNP molecular marker affecting quantity trait of pig nipples and application

The invention relates to an SNP molecular marker affecting the quantity trait of pig nipples and application. The SNP molecular marker with an SNP locus corresponding to the 61380019th G/A mutation ofthe 16th chromosome of the international genome 11.1 version reference sequence is obtained by screening, the dominant allele frequency can be improved by screening the dominant allele of the SNP generation by generation, thus, the total quantity of the pig nipples is increased, the reproductive performance of pigs is improved, the genetic improvement progress of pigs is accelerated, and thus, the economic benefits of pig breeding are improved effectively. 本发明涉及一种影响猪乳头数性状的SNP分子标记及应用。本发明筛选得到一种SNP位点对应于国际基因组11.1版本参考序列16号染色体第61380019位G/A突变的SNP分子标记，通过逐代筛选该SNP的优势等位基因，能够提高优势等位基因频率，进而提升猪总乳头数，提高猪的繁殖性能，加快猪遗传改良进度，从而以有效提高猪养殖的经济效益。