基于超声波测量胸肌厚预测肉鸡产肉性能的选育方法研究  

Research on a Breeding Method for Predicting Meat Yield Performance of Broilers Based on Ultrasound Measurement of Pectoral Muscle Thickness

作　　者：王一诺 徐丹 杨建华 刘洋 田尧夫 赵小玲[1] WANG Yinuo;XU Dan;YANG Jianhua;LIU Yang;TIAN Yaofu;ZHAO Xiaoling(State Key Laboratory of Swine and Poultry Breeding Industry,Key Laboratory of Livestock and Poultry Multi-omics of Ministry of Agriculture and Rural Affairs,College of Animal Science and Technology,Sichuan Agricultural University,Chengdu 611134,China;Sichuan Sihai Sanlian Agricultural Development Company,Guangyuan 628017,China)

机构地区：[1]四川农业大学动物科技学院,猪禽种业全国重点实验室,农业农村部畜禽生物组学重点实验室,成都611134 [2]四川四海三联农业开发有限公司,广元628017

出　　处：《畜牧兽医学报》2024年第7期2901-2912,共12页ACTA VETERINARIA ET ZOOTECHNICA SINICA

基　　金：广元市科技计划项目(23DYZF0008);四川省科技计划项目(2022NZZJ0009);国家自然科学基金外国学者研究基金项目(32350410427)。

摘　　要：旨在利用超声波技术测量天府肉鸡(TF)胸肌厚,针对肉鸡的产肉性能选育建立高效的选择方法。本研究测定了31只65日龄健康((2.1±0.5)kg)天府肉鸡公鸡的胸肌厚、体尺性状和屠宰性状,运用SPSS 26.0软件分析了胸肌厚与体尺性状和屠宰性状间的相关性和通径系数,建立了胸肌厚与屠宰性状、瘦肉重与体尺性状的最优回归模型,使用JMP软件对天府肉鸡体尺性状进行主成分分析。超声波结果显示,天府肉鸡公鸡胸肌厚服从正态分布,体斜长、胸深、胸角、胫围和冠厚的变异系数大于10%,胸肌厚与胸宽、胸深、胫围、冠厚和胸肌重呈极显著正相关(P<0.01),胸肌厚与龙骨长、胸围、活体重、半净膛重和瘦肉重显著正相关(P<0.05)。综上所述,65日龄天府肉鸡公鸡的瘦肉重与胸围和体斜长密切相关,体尺性状对瘦肉重以及屠宰性状对胸肌厚的最优线性回归模型实现了对产肉性能的间接选择,活体重、胸宽、胸围、胫围和冠厚是天府肉鸡公鸡选留中需要主要考虑的性状,本研究结果将为优质肉鸡的进一步选育提供理论基础。The aim of this study was to employ ultrasound technology to determine the breast muscle thickness of Tianfu broiler chickens(TF)so as to establish efficient selection method for broiler chickens based on their muscle development.In this present study,the breast muscle thickness,body measurements,and carcass traits of 31 healthy((2.1±0.5)kg)Tianfu broiler cock chickens(65 days old)were measured,as well as the correlation and path coefficients between the breast muscle thickness,body measurements and carcass traits were analyzed using SPSS 26.0.The optimal regression models for the breast muscle thickness and carcass traits,as well as the lean meat weight and body measurements,were established.Furthermore,the principal component analysis was performed on the body measurements using the JMP.The ultrasound results showed that the breast muscle thickness of the Tianfu broiler male chickens followed a normal distribution.The coefficient of variation in the body slope length,chest depth,chest angle,shank girth,and crown thickness were greater than 10%,and the breast muscle thickness was significantly positively correlated with the chest circumference,chest depth,shank girth,crowm thickness,and breast muscle weight(P<0.01),and was significantly positively correlated with the keel length,chest girth,live weight,half-carcass weight,and lean meat weight(P<0.05).Taken together,it was revealed in this study that the lean meat weight of the Tianfu broiler male chickens were closely related to the chest girth and body slope length.Furthermore,the meat production performance were indirectly selected through optimal linear regression models of body size traits for lean meat weight and carcass traits for breast muscle thickness,whereas,live weight,chest circumference,chest girth,shank girth,and crown thickness are also traits of importance to be considered in selection of Tianfu broiler chickens.The results of this study will provide a theoretical basis for further selection of high-quality meat chickens.

关 键 词：天府肉鸡 胸肌厚 相关性分析 主成分分析 

分 类 号：S831.2[农业科学—畜牧学]