摘要
为了对AA肉鸡的生产性能进行评定,试验采用主成分分析法对16栋鸡舍中374442只AA肉鸡的生产性能进行了统计分析,测定了入栏数(x1)、死淘数(x2)、存栏数(x3)、成活率(x4)、累计总耗料量(x5)、累计只耗料量(x6)、体重(x7)、平均周增重(x8)和饲料转化比(x9)等9个指标,建立了生产性能综合评定模型。结果表明:9个变量间存在不同程度的相关性,提取的3个主成分综合了原变量94.4734%的信息,主成分y1、y2、y3的贡献率分别为50.2997%、30.0045%、14.1692%,其信息表达式分别为y1=-0.2365x1-0.4364x2+0.3862x3+0.4353x4+0.1228x5+0.1037x6+0.4082x7+0.4082x8-0.2362x9;y2=0.1876x1-0.0637x2+0.1267x3+0.0665x4+0.5805x5+0.5685x6-0.0855x7-0.0855x8+0.5153x9;y3=-0.5469x1+0.2804x2-0.4697x3-0.2875x4+0.1252x5+0.2439x6+0.3433x7+0.3433x8+0.0902x9。建立的生产性能综合评定模型为I=-0.1484x1-0.2105x2+0.1754x3+0.2098x4+0.2685x5+0.2723x6+0.2417x7+0.2417x8+0.0514x9。说明所建模型综合了9个指标的绝大部分信息,可用于AA肉鸡生产性能的综合评定。
In order to evaluate the production performance of AA broilers, the main component analysis method was used to analyze the production performance of 374 442 AA broilers in 16 chicken houses. Nine indicators, including the number of entry(x1), the number of dead(x2), the number of storage(x3), the survival rate(x4), the cumulative material consumption(x5), the cumulative material consumption(x6), the weight(x7), the average weekly weight gain(x8) and the feeding efficiency(x9), were measured and a comprehensive evaluation model of production performance was established. The results showed that there was different degree of correlation among the nine variables. The extracted three principal components synthesize 94.473 4% of the information of the original variables. The contribution rates of the principal components y1,y2 and y3 were 50.299 7%, 30.004 5% and 14.169 2%, respectively. The information expressions were y1=-0.236 5 x1-0.436 4 x2+0.386 2x3+0.435 3x4+0.122 8x5+0.103 7x6+0.408 2x7+0.408 2x8-0.236 2x9;y2=0.187 6x1-0.063 7x2+0.126 7x3+0.066 5x4+0.580 5x5+0.568 5x6-0.085 5x7-0.085 5x8+0.515 3x9;y3=-0.546 9x1+0.280 4x2-0.469 7x3-0.287 5x4+0.125 2x5+0.243 9x6+0.343 3x7+0.343 3x8+0.090 2x9. The comprehensive evaluation model of production performance was I=-0.148 4x1-0.210 5x2+0.175 4x3+0.209 8x4+0.268 5x5+0.272 3x6+0.241 7x7+0.241 7x8+0.051 4x9. The results indicated that the model synthesized most information of 9 indexes and could be used to evaluate the production performance of AA broiler.
作者
马发顺
王高兴
梁秀丽
蒋沙沙
宋玉伟
MA Fashun;WANG Gaoxing;LIANG Xiuli;JIANG Shasha;SONG Yuwei(Shool of Biotechnology and Food Science,Anyang Institute of Technology,Anyang 455000,China;Henan Joint International Research Laboratory of Veterinary Biologics Research and Application,Anyang Institute of Technology/Academician Workstation of Animal Disease Control and Nutrition Immunity in Henan Province,Anyang 455000,China;Pingshang Broiler Farm,Huaxian 456400,China)
出处
《黑龙江畜牧兽医》
CAS
北大核心
2020年第16期40-43,共4页
Heilongjiang Animal Science And veterinary Medicine
基金
国家重点研发计划项目(2017YFD0501000)。
关键词
AA肉鸡
生产性能
相关分析
主成分分析
综合评定模型
AA broiler
production performance
correlation analysis
principal component analysis
comprehensive evaluation model
