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Abstract The exon 2 of SLA-DQB and DRB genes in Sutai pigs were analyzed by PCR-RFLP method., the results showed that the exon 2 of SLA-DQB gene digested by restriction endonuclease RsaⅠcould be divided into three kinds of alleles , five kinds of genotypes, the exon 2 of SLA-DRB gene digested by restriction endonuclease RsaⅠcould be divided into three kinds of alleles , four kinds of genotypes. The results of Chi Square test indicated that the frequencies of patterns types of SLA-DQB and SLA-DRB genes digested by RsaⅠwere fit with Hardy-Weinberg equilibrium in Tibet pig populations(p>0.05). There were twelve combined patterns of SLA-DQB and DRB genes in Sutai pigs, the correlation between these combined patterns with the productive performances of Sutai pigs was analyzed, the results showed that productive performances (the total litter, number of viable pigs, litter weight at birth and number of ablactation pigs in the third litter ) of Sutai pigs with BBDFcombined pattern were significant higher than those with AADD, AADF, ABDD and CCDF combined pattern. As the productive performances of Sutai pigs, the combined pattern of BBDF was the most favorable.
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Received: 21 November 2006
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