关键词: 猪, 生长性状, 胴体性状, PIT1, HDAC1, IGF2

Abstract:

【Objective】 The objective of this study was to study the polymorphism of porcine three loci of PIT1, HDAC1 and IGF2 and its relationship with the growth and carcass traits in swine. 【Method】 The polymorphism of three genes was analyzed by PCR-RFLP method. The genotypic effects of such genes on growth and carcass traits were analyzed. 【Result】 CC genotype of PIT1, GG of HDAC1 and AA of IGF2 had favorable effect on growth and the age at 100 kg liveweight is 6-9days less than the contrary genotypes. The effects of CC genotype of PIT1, the GG genotype of HDAC1 and the BB genotype of IGF2 on lean percentage were 3-5 percent higher and on backfat thickness were 2-3 mm lower than the contrary genotypes. The index of growth traits increased relevantly.【Conclusion】 The favorable genotypes of thoese genes could be regarded as molecular markers in selection of lean type pigs.

Key words: swine, growth traits, carcass traits, PIT1, HDAC1, IGF2