不同饲养方式对凉山岩鹰鸡屠宰率和胴体品质的影响

目的]为凉山岩鹰鸡的开发和利用提供理论依据。方法]以不同管理方式饲养的100日龄凉山岩鹰鸡为研究对象,对其屠宰性能和肌肉品质进行了测定。结果]在散放饲养条件下,凉山岩鹰鸡公、母鸡的屠宰率、全净膛率、半净膛率、胸肌率和腿肌率均极显著高于笼养鸡。公鸡的屠宰率、全净膛率、半净膛率均显著高于母鸡。不同饲养方式下岩鹰鸡的胸肌和腿肌的肉色差异不显著,腿肌的肉色测定值小于胸肌。笼养条件下岩鹰鸡的嫩度和失水率均高于散放饲养。在宰后45 min,岩鹰鸡胸、腿肌pH值接近7,而宰后24 h有所降低。结论]在散放饲养条件下,凉山岩鹰鸡的肉用性能优于笼养,主要与其在散放饲养条件下活动量较大有关。

Effects of Different Feeding Manners on the Slaughter Rate and Carcass Quality of Rock-eagle Chicken in Liangshan City

Objective] The aim of the research was to provide the theoretical basis for the development and utilization of Rock-eagle chicken in Liangshan city.Method] With 100-day-old Rock-eagle chicken in Liangshan city fed in different management manners as research objects,their slaughter performance and meat quality were determined.Result] Under the conditions of scattered feeding,the slaughter rate,whole net carcass rate,half net carcass rate,breast muscle ratio and leg muscle ratio in the cocks and hens of Rock-eagle chicken in Liangshan city were extremely significantly higher than that of cage chicken.The slaughter rate,whole net carcass rate and half net carcass rate in the cocks were significantly than that in the hens.The meat color of breast muscle and leg muscle in Rock-eagle chicken had no significant difference under different feeding manners and the determined value of meat color in leg muscle was lower than that in breast muscle.The meat tenderness and water loss rate of Rock-eagle chicken in cage feeding were both higher than that of scattered feeding.The pH value in breast and leg muscle of Rock-eagle chicken was near to 7 after slaughtering for 45 min and it was decreased after slaughtering for 24 h.Conclusion] Under the scattered feeding,Rock eagle chicken in Liangshan city was better than that under cage feeding,which was mainly related with their greater movement amount under the conditions of scattered feeding.