The SNPs of 12 genes in chromosome 4 were studied by PCR-RFLP、PCR-SSCP and sequencing methods, with a reference family with 212 pigs provided by Danmark Royal veterinary University, and the linkage map of the markers was built by BUILD and ALL procedures, afterwards, the genotypes and their recombination were tested by CHROMPIC procedure. The association between the linkage map spanning 115.1cM with 12 SNP markers and meat quality, and slaugter traits were analysed by mixed model, the results showed as foll...