SNP marker obviously related to number borne alive of Erhualian sow for porcine chromosome 13 as well as detection method and application of SNP marker

The invention discloses an SNP marker obviously related to the number borne alive (NBA) of an Erhualian sow for a porcine chromosome 13 as well as a detection method and application of the SNP marker.The SNP marker is located on a nucleotide sequence of a calsyntenin 2 (CLSTN2) gene on the porcine chromosome 13, the site of the SNP marker is a chr13_81429549 nucleotide site on the porcine chromosome 13 of an international porcine genome 11.1 version reference sequence, and T/C polymorphism exists; and the SNP marker is obviously related to the number borne alive (P=0.0479) of later parities of the Erhualian sow and is obviously related to the number borne alive (P=0.0383) of all parities of the Erhualian sow. The invention discloses a primer pair for detecting the SNP marker. An upstreamprimer is as shown in SEQ ID NO:2, and a downstream primer is as shown in SEQ ID NO:3. The SNP marker provided by the invention is related to the number borne alive of the Erhualian sow. 本发明公开了猪13号染色体与二花脸猪产活仔数显著相关的SNP标记及其检测方法与