Abstract:

In this experiment, 30 healthy chickens (15 males and 15 females) were selected at 43 weeks of age to investigate the correlation between body weight, body size, slaughter performance and meat quality, and the correlation between body weight, body size and slaughter performance was analyzed by Pearson method. The results showed that the body slope length, keel length, tibia length and tibia circumference were significantly higher in males than in females; the rates of semi-eviscerated and eviscerated were significantly higher in males than in females, but the differences in other slaughter properties were not significant; in terms of body size and slaughter performance, body weight before slaughter was strongly positively correlated with carcass weight, body slope length, breast depth, breast width, shank length semi-eviscerated weight, eviscerated weight breast muscle weight and leg muscle weight. In terms of meat quality, the leg muscle color a^* was significantly greater in males than in females. The test showed that the meat production performance of Kaihua frizzle roosters was higher than that of hens, the correlation between body size and slaughter performance was higher, and the leg muscle rate was higher. The results of this paper provide data support for the conservation and utilization of the local resources of Kaihua Frizzle chicken.

Key words: frizzle chicken, body weight, body size, meat quality, correlation