不同品系优质肉鸡屠宰性能试验研究

摘要

[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 per-centage 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 car-cass traits among different stains of high-quality meat chicken.The cross line A ×B had higher growth speed, so it was suitable to be popular-ized in the markets with higher growth speed demands of high-quality meat chicken.