The study was to analyze the growth and development of Tibetan chicken through cross-breeding and lay a theoretical foundation for the application of crossbreeding of Tibetan chicken.The pure line of Tibetan chicken and other two local breeding lines were used to form 3 two-way crossbreeding com-binations and 2 pure line combinations.The weight of brooding period,weight of male at 7-13 weeks of age,weight of female at 7-44 weeks of age,body size of male and female at 13 weeks of age,and body size of female at 44 weeks of age were observed and measured,and the correlations among body weight and body size were analyzed to explore the growth and development rules of Tibetan chicken crossbreeds.The results showed the body weight of male and female of the crossbreeding combinations at all stages was sig-nificantly bigger than that of the pure Tibetan chicken line(P＜0.05),and the body size of male and fe-male at 13 weeks and that of female at 44 weeks of age were also significantly larger than that of the pure Tibetan chicken line(P＜0.05).The correlations among body weight and body size were high in male and low in female.Comprehensive analysis showed that the body weight and body size of crossbreeding combi-nations are significantly improved compared with those of pure Tibetan chicken line(P＜0.05).The growth performance of crossbreeding combinations has obvious hybrid advantages.
维普
万方数据