中国畜牧兽医2017，Vol.44Issue(6)：1754-1761,8.DOI:10.16431/j.cnki.1671-7236.2017.06.025
宁夏地区荷斯坦奶牛遗传参数估计
The Estimation of Genetic Parameters of Holstein Dairy Cows in Ningxia Region
摘要
Abstract
The genetic parameters of milk fat percentage (FP), milk protein percentage (PP), somatic cell score (SCS), milk yield of 305 days (MYD), age at first calving (AFC),calving interval (CI) and linear classification scores (LCS) were estimated using the DHI data of 2008 to 2016 in Ningxia area of 27 444 Holstein dairy cows and type records.With the aid of DMU v 6.0 AI-REML software, DMU combined with EM algorithm and multi character animal model was used to model the influence factors of the birth season, herd, year, parity and individual additive genetic effect.The results showed that FP, PP, SCS, MYD, AFC, CI and LCS's heritability were 0.14, 0.19, 0.19, 0.31, 0.37, 0.10, 0.07, respectively.At the same time, the breeding value, genetic correlation and CPI2 values of different traits were calculated.The genetic evaluation for dairy cows in Ningxia, could be more in-depth understanding of the basic situation of the herd, to provide basic data for the construction of dairy cow breeding matching selection, planning and selection index.关键词
荷斯坦奶牛/遗传力/遗传相关/育种值Key words
Holstein dairy cow/heritability/genetic correlation/breeding value分类
生物科学引用本文复制引用
李欣,周靖航,温万,邵怀峰,脱征军,田佳,马金香,顾亚玲..宁夏地区荷斯坦奶牛遗传参数估计[J].中国畜牧兽医,2017,44(6):1754-1761,8.基金项目
优质高产奶牛选育(2013NYYZ0501) （2013NYYZ0501）
