盐津乌骨鸡不同月龄屠宰性能研究

Study on the slaughter performance of Yanjin silkies at different months of age

为了解不同月龄盐津乌骨鸡的屠宰性能相关关系,试验测定了3,4,5月龄盐津乌骨鸡屠宰性能相关指标。结果表明:3,4,5月龄盐津乌骨鸡的产肉性能良好,屠宰率均达到84%以上,全净膛率均达到60%以上,屠宰率、头重率、脚重率差异均不显著(P>0.05)。其他指标中同一月龄不同性别间,公鸡的活重、屠体重、半净膛重、全净膛重、腿重、腿肌重均极显著或显著高于母鸡(P<0.01或P<0.05),同一性别不同月龄间,公鸡和母鸡3,4,5月龄的活重、屠体重、半净膛重、全净膛重、胸重、胸肌重、腿重、腿肌重差异均显著(P<0.05),随着月龄的增长,各指标均明显升高;相关性分析结果表明,屠体重与半净膛重、全净膛重的相关程度最高,达到了0.999。

To understand the correlation of slaughter performance of Yanjin silkies at different months of age, the related indexes of slaughter performance of Yanjin silkies at 3, 4, and 5 months of age were determined. The results showed that Yanjin silkies at 3, 4, and 5 months of age had favorable meat production performance, and their slaughter rates and eviscerated rates reached above 84% and 60%, respectively. There were no significant differences （ P 〉 0.05 ） in the slaughter rates, head - weight rates, and foot - weight rates of Yanjin silkies. In the other indexes, the live weight, carcass weight, semi - eviscerated weight, eviscerated weight, leg weight and leg muscle weight of the male silkies were highly significantly higher （P 〈 0.01 ） or significantly higher （P 〈 0.05 ）than those of the female silkies between different genders at the same months of age; there were significant differences （ P 〈 0.05 ） in the live weight, carcass weight, eviscerated weight, breast weight, breast muscle weight, leg weight, leg muscle weight of the male and female silkies between the same genders at different months of age. All in- dexes were significantly increased with the increase of the months of age. The result of correlation analysis showed that the relevancy of slaughter weight to semi - eviscerated weight and eviscerated weight was the highest, which reached 0. 999.