Study on the Correlation between OPAY02 Marker and Early Performance in Xiaoshan and Its Hybrid Offspring

Xiaoshan, SR92A and their hybrid offspring chickens were used in RAPD primer OPAY02. The two different polymorphic bands combination were defined as four different genetic types named as A, B, C and D. A type represented the two bands appear at the same time; B and C type represented 1 660.8 bp band and 2 326.0 bp band appear alone respectively; D type was defined if neither of them appear. The B type was firstly detected in Xiaoshan, SR92A and their F_1, the frequency was 9.30%, the body weight at 49 days in Xiaoshan chicken were significantly different between the four genetic types, their effects on body weight at 49 and 75 days of Xiaoshan chicken is ACB. But it was not significant either in SR92A chicken or in hybrid chicken. the effects of each genetic type were not all the same in different genetic population.