Study on the breeding of Tianfu broiler commercial lines

To meet the huge market demand for high-quality Qingjiaoma chicken in China, the poultry breeding team of Sichuan Agricultural University carried out the systematic breeding work of synthetic line of high quality of Qingjiaoma broilers. Modern poultry breeding techniques was adopted in this experiment, and selected the appearance（feather color, crown height and so on）, production and reproduction performance as the breeding indexes, 6 generations of pure lines were selected and the combining ability of different combinations was determined. The production performance of Tianfu broiler commercial generation was compared with the same kind of Qingjiaoma broilers（Qingjiaoma 1, Qingjiaoma 2） in the market. The results showed that the pure lines of Tianfu broiler had stable appearance characteristics and production performance, and parental lines had good reproductive performance. The number of eggs for 66 weeks-old chickens was 178.0, and 161.0 of them were satisfied the hatching requirement. The market age for commercial generation was 70 days, having green feet and white meat. Males had red and bright feathers while females had black-dotted yellow feathers. The feed weight ratio of cocks was 2.48, and their average body weight was 2 488 g on 70 day. The feed weight ratio of hens was 2.62, and their average weight was 1 978 g on 70 day. Compared with the similar breeds in the market, Qingjiaoma 1 and Qingjiaoma 2, the reproduction and production performance of Tianfu broilers were similar to those of Qingjiaoma 1, while slightly better than Qingjiaoma 2. The results indicated that the commercial lines could satisfy the requirements from the short-term high-quality meat-type chicken market.