Abstract:

The length polymorphism of intron 7 in glucocorticoid receptor (GR) gene was detected by PCR. A length polymorphic segment in intron 7 is common in all detected groups. Alleles detected in the sequence were allele A and B with frequencies of 0.2286/0.7714 and 0.2008/0.7992 in the two populations, respectively. This polymorphic segment of GR gene was at Hardy-Weinberg equilibrium (P＞0.05) in the two populations, respectively. The effects of the length polymorphic segment on fat traits in pigs were estimated using a mixed model．Significant associations were found between different genotypes of intron 7 in glucocorticoid receptor with intamuscular fat, backfat thickness of shoulder, waist, 6-7 ribs and the leaf fat weight (P＜0.05). which indicated that the length polymorphism had certain effect on porcine fat storage.