北京油鸡剩余采食量与屠宰性能及肉品质的相关性分析

A Correlation Analysis Between Residual Feed Intake and Slaughter Performances and Meat Quality of Beijing-You Chicken

本研究旨在探讨北京油鸡剩余采食量(RFI)与屠宰性能和肉质性状的关系。试验测定了400只北京油鸡70~98日龄的RFI及98日龄屠宰性能和肉品质,并对RFI与屠宰性能和肉品质的相关性进行了分析。结果显示,试验公鸡的平均日采食量(ADFI)、平均日增重(ADG)极显著高于母鸡(P<0.01),饲料转化率(FI/GW,FCR)极显著低于母鸡(P<0.01)。公鸡半净膛率、腿肌率和胸肌红度(a*)极显著高于母鸡((P<0.01)。公鸡的RFI与FCR、ADFI极显著正相关(P<0.01),与腹脂率显著正相关(P<0.05),与胸肌率和腿肌率极显著负相关(P<0.01);母鸡RFI与FCR和ADFI极显著正相关(P<0.01),与ADG显著正相关(P<0.05),而与腿肌率极显著负相关(P<0.01)。公鸡RFI与胸肌亮度(L*)极显著正相关(P<0.01),与色度(C*)显著正相关(P<0.05);母鸡RFI与胸肌a*和C*极显著正相关(P<0.01),与色调(H*)和pH极显著负相关(P<0.01),与L*和黄度(b*)显著正相关(P<0.05)。由以上结果可见,北京油鸡公鸡的饲料利用效率优于母鸡,且部分屠宰性状和肉质性状与RFI存在显著相关性。

The aim of this study was to explore the relationship between residual feed intake（RFI）and some production performances including slaughter performance and meat quality.The RFI and production performances from 400Beijing-You chickens were used to analyze the correlation of these traits.The results showed that the average daily feed intake（ADFI）and the average daily gain（ADG）of male chickens were extremely significantly higher than female ones（P〈0.01）,while the feed conversion ratio（FCR）was decreased extremely significantly（P〈0.01）.The percentage of carcass and thigh muscle as well as the redness（a＊）were extremely significantly higher in male chickens than female ones（P〈0.01）.In male chickens,RFI had positive correlation with FCR,ADFI（P〈0.01）and percentage of abdominal fat（P〈0.05）and negative correlation with percentage of breast muscle and percentage of thigh muscle（P〈0.01）.In female chickens,RFI had positive correlation with FCR,ADFI（P〈0.01）and ADG（P〈0.05）,but negative correlation with percentage of thigh muscle（P〈0.01）.In male chickens,RFI was correlated positivelywith lightness（L＊）（P〈0.01）and chroma（C＊）（P〈0.05）.While in female chickens,RFI had positive correlation with L＊,yellowness（b＊）（P〈0.05）,a＊and C＊（P〈0.01）,but had extremely negative correlation with Hue（H＊）and pH（P〈0.01）.Therefore,RFI had correlation with some production performances including slaughter performance and meat quality.