《中国畜牧兽医》 ›› 2017, Vol. 44 ›› Issue (6): 1754-1761.doi: 10.16431/j.cnki.1671-7236.2017.06.025

• 遗传繁育 • 上一篇    下一篇

宁夏地区荷斯坦奶牛遗传参数估计

李欣1, 周靖航1, 温万2, 邵怀峰2, 脱征军2, 田佳2, 马金香2, 顾亚玲1   

  1. 1. 宁夏大学农学院, 动物生产实验室, 银川 750105;
    2. 宁夏畜牧工作站, DHI测定中心, 银川 750105
  • 收稿日期:2016-10-21 出版日期:2017-06-20 发布日期:2017-06-28
  • 通讯作者: 顾亚玲 E-mail:guyaling@sina.com
  • 作者简介:李欣(1986-),男,陕西商洛人,硕士生,研究方向:动物遗传育种与繁殖,E-mail:lixinxinli_sadu@qq.com
  • 基金资助:

    优质高产奶牛选育(2013NYYZ0501)

The Estimation of Genetic Parameters of Holstein Dairy Cows in Ningxia Region

LI Xin1, ZHOU Jing-hang1, WEN Wan2, SHAO Huai-feng2, TUO Zheng-jun2, TIAN Jia2, MA Jin-xiang2, GU Ya-ling1   

  1. 1. Laboratory of Animal Production, School of Agricultural, Ningxia University, Yinchuan 750105, China;
    2. Laboratory of Dairy Herd Improvement, Ningxia Animal Husbandry and Veterinary Station, Yinchuan 75105, China
  • Received:2016-10-21 Online:2017-06-20 Published:2017-06-28

摘要:

利用2008-2016年出生的27 444头宁夏地区荷斯坦奶牛生产性能(dairy herd improvement,DHI)数据及体型线性评分数据计算乳脂率(fat percentage,FP)、乳蛋白率(protein percentage,PP)、体细胞评分(somatic cell score,SCS)、305 d产奶量(milk yield of 305 days,MYD)、初产日龄(age at first calving,AFC)、产犊间隔(calving interval,CI)和体况评分(linear classification scores,LCS)的遗传参数。利用DMU v 6.0软件,采用AI-REML模块结合EM算法并配合多性状动物模型,以季节、场、年份、胎次和动物个体加性遗传效应作为模型的影响因素。计算结果表明,宁夏地区奶牛的FP、PP、SCS、MYD、AFC、CI和LCS的遗传力分别为0.14、0.19、0.19、0.31、0.37、0.10和0.07,同时得出了奶牛不同性状的育种值、遗传相关和奶牛生产性能指数2(China performance index 2,CPI2)值。本研究通过对宁夏地区奶牛DHI数据的深挖和遗传评估,准确地把握了宁夏奶牛群体结构特征,对于奶牛的选种选配、育种规划和选择指数的构建有重要意义。

关键词: 荷斯坦奶牛; 遗传力; 遗传相关; 育种值

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.

Key words: Holstein dairy cow; heritability; genetic correlation; breeding value

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