Study On Dongxiang Black Chicken And Its Cross Utilization

In order to improve the egg-laying performance of Dongxiang black chicken,this experiment crossed it with the high yield white Leghorn.Through the analysis of growth and development speed,egg laying performance,egg quality and skin color of the hybrid progeny,we can select the hybrid progeny that can improve the laying performance and egg quality of Dongxiang black chicken and the special egg advantage of Dongxiang black chicken.The results showed that:1.The growth and development rate of the hybrid progeny of Dongxiang black chicken and Leheng chicken was obviously faster than that of Dongxiang black chicken and white Leghorn(P<0.05).2.The hybrid progenies of Dongxiang Black Chicken and white Leghorn showed obvious cross advantages in the aspects of first production traits,average egg weight,feed / egg ratio and egg laying rate,which were significantly higher than those of Dongxiang Black Chicken and white Leghorn,and showed good egg laying performance(P<0.05).3.The total level of egg quality of hybrid progenies was significantly higher than that of Dongxiang black chickens and white Leghorn,and showed obvious heterosis in egg quality(P<0.05).4.Dongxiang black chicken cross with white Leghorn,the color of the offspring of the hybrid was separated.Among them,the color of Lvlai was white,the white color of Lvlvlai was 1 / 2,and the color of black was 1 / 2.5.The growth and development speed,Lvlai performance and egg quality of the two hybrid progenies of Dongxiang Black Chicken and white Leghorn were significantly higher than that of Lvlvlai.To sum up: in this experiment,the hybrid progenies of Dongxiang Black Chicken and white Leghorn show good cross superiority in many aspects.Compared with Dongxiang Black Chicken,their hybrid progenies have the advantages of fast growth and development,low feed consumption,good performance,great egg weight,low feed / egg ratio,high laying rate and high egg quality level.The results show that the hybrid progenies of Dongxiang Black Chicken and white Leghorn has low cost,high return on investment,high economic value,broad market prospect and wide application value.