Four F2 resource populations of Erhualian×Tongcheng, Erhualian×Rongchang, Erhualian×Bamaxiang and Erhualian×Shaziling were constructed, and genomic DNA of 392 piglets and their parents and grandparents was genotyped with Illumina porcine 60k DNA chips. Genome-wide association analysis was conducted to detect QTL for teat number in pigs.
Results showed that thirteen QTLs for total teat number including seven at 5% and six at 1% genome-wide significance level were mapped to SSC1, SSC3, SSC5, SSC6, SSC7, S...