中国荷斯坦公牛系谱完整性研究  

Evalutation of Pedigree Completeness in Chinese Holstein Bulls

作　　者：杨湛澄 闫青霞[2] 黄河天 陈绍祜[2] 张胜利[1] 张毅[1] 

机构地区：[1]中国农业大学动物科技学院,北京100193 [2]中国奶业协会,北京100192

出　　处：《中国奶牛》2017年第2期22-25,共4页China Dairy Cattle

基　　金：现代农业(奶牛)产业技术体系建设专项资金(CARS-37);国家科技支撑计划(2011BAD28B02)

摘　　要：我国奶牛良种补贴政策已实施十余年,补贴了大量公牛,有效调动了奶牛场使用良种公牛冻精的积极性,加速了我国良种奶牛的普及与推广,同时也积累了大量系谱数据。本研究利用系谱完整性指数(Pedigree Completeness Index,PCI)统计分析了2 374头中国荷斯坦良补公牛的6代系谱完整情况。结果显示,总体上中国荷斯坦良补公牛系谱完整性良好,PCI平均为0.98±0.08(平均数±标准差),85%的良补公牛系谱无缺失信息(PCI=1),99%的公牛前三代系谱完整。对系谱信息不完整公牛的分析发现,父系系谱完整性一般高于母系系谱。来自澳大利亚、英国、新西兰的公牛父亲系谱完整性和来自法国的公牛母亲系谱完整性相对较低(平均PCI<0.9)。Seed subsidy policy for dairy cattle has been implemented for more than ten years in China. A large number of dairy bulls have been subsidized.The policy not only improves the use of high-quality frozen semen and the popularization of superior bulls, but also accelerates the accumulation of pedigree data. In this study, we used pedigree completeness index （PCI） to analyse pedigree completeness of 2374 Chinese Holstein bulls in a 6-generation depth scale. The result shows pedigree completeness is excellent in Chinese Holstein subsidy bulls with 85% of the bulls having complete pedigrees of six generations and 99% of the bulls having complete pedigree of three generations. Analysis of the incomplete pedigree indicates that paternal pedigree completeness is better than maternal pedigree completeness. The pedigree completeness of sires form Australia, Britain, New Zealand and dams from French is relatively lower with mean PCI〈0.9.

关 键 词：中国荷斯坦牛 良种补贴 系谱完整性指数 

分 类 号：S823.3[农业科学—畜牧学]