不同品系优质肉鸡屠宰性能试验研究

Study on Carcass Traits among Different Stains of High-quality Meat Chicken

[目的]研究5个大恒优质肉鸡品系的生长和屠宰性能,为进一步选育优质肉鸡品种提供参考依据。[方法]以大恒优质肉鸡A、B、C、A×B和C×B等5个品系为研究对象,相同条件下饲养至10周龄进行屠宰,测定屠宰体重与肉用性能。[结果]除腹脂重以外,各品系及杂交组合公鸡的活体重、屠体重、半净膛重、全净膛重、胸肌重、腿肌重均显著或极显著高于母鸡。杂交组合A×B和C×B的屠宰率在85%以上,全净膛率在65%以上,产肉性能良好,A×B杂交组合的屠宰率、半净膛率、全净膛率和胸肌率均高于C×B组合。[结论]不同品种的优质肉鸡生长和屠宰性能存在差异。杂交组合A×B生长速度快,适于在对优质肉鸡生长速度要求高的市场推广应用。

[Objective] To study the growth and carcass traits of five strains of Daheng high-quality meat chicken and provide references for breeding high-quality meat chicken strains further. [Method] Five strains of Daheng high-quality meat chicken（ A,B,C,A × B and C × B）were selected as research objects to feed under the same conditions for 10 weeks and determine the slaughter weight and meat performance.[Result]Besides abdominal fat weight,the live body weight,slaughter weight,semi-eviscerated weight,eviscerated weight,breast muscle weight and leg muscle weight of cocks of five strains were all significantly or extremely significantly higher than that of hens. The carcass percentage of cross line A × B and C × B was above 85%,and the eviscerated percentage of cross line A × B and C × B was above 65%. And cross line A × B and C × B had better meat performances. The carcass percentage,semi-eviscerated percentage,eviscerated percentage,breast muscle percentage of cross line A × B were higher than that of cross line C × B. [Conclusion]There were differences of growth and carcass traits among different stains of high-quality meat chicken. The cross line A × B had higher growth speed,so it was suitable to be popularized in the markets with higher growth speed demands of high-quality meat chicken.