Skin and fat percentage for AA and AB on IGF 1 locus was higher than for BB by 8 81% ( P =0 0206) and 7 64% ( P =0 0431) respectively,and the additive and dominant effects were 4 41% and 3 24% respectively.

• AA型和AB型皮脂率的遗传效应比BB型分别高 8 81%25(P =0 0 2 0 6 )和 7 6 4%25 (P =0 0 4 31) ,对该性状的加性和显性效应分别为 4 4 1%25和 3 2 4%25。