The objective of this study was to identify the intron A sequence (between exons 1 and 2) of pPAG2-L, novel single nucleotide polymorphisms (SNPs) and mutations (InDels) within intron A in the crossbreed (Landrace x Large White), Hirshmann hybrid and Duroc pigs. Genomic templates were isolated from leukocytes, amplified, and the gel-out were purified and then sequenced. Positive amplification control included CH242-60C13 BAC clone (Duroc) containing pPAG1-L and pPAG2-L. This is the first report

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... that describes the 1093-bp intron A sequence from the pPAG2-L (Acc. No. KF471015; GenBank), which increased general knowledge of the porcine genome. Novel SNPs/InDels were identified within the intron A of the pPAG2-L in the crossbreeds (72), Duroc (45) and Hirshmann hybrids (17). This is a pioneer study describing identification of the intron A and SNPs/InDels in crossbreeds that provides a novel major pattern that represents a large portion of the genetic variation within the porcine genome. This information should be valuable when genotyping (coding and noncoding regions) multiparous sows from many breeds, in which reproductive phenotypes are known.