中国奶牛Issue(9)：18-21,4.DOI:10.19305/j.cnki.11-3009/s.2025.09.004
影响荷斯坦牛胚胎移植后代产奶性能的因素分析
Analysis of Factors Affecting Milk Production Performance of Embryo Transfer Offspring of Holstein Cows
摘要
Abstract
This study aims to provide reference for the production and management of embryo transfer offspring dairy cows in Gansu Province by analyzing the DHI data of embryo transfer offspring dairy cows in Gansu Province from 2023 to 2025.A total of 3817 DHI data of embryo transfer offspring from a large-scale dairy farm were selected,and the effects of year,parity,calving season and sampling season on milk production performance of dairy cows were analyzed by multi factor analysis of variance in SPSS 26.0 software.Results showed that year,parity,calving season and sampling season had significant effects on milk yield and milk composition(P<0.05).The milk fat rate and peak milk are high in 2023.Urea nitrogen is relatively high in 2024 and 2025.The milk yield and peak milk yield of 3-fetal cows were higher.The urea nitrogen of 1 fetus was higher.The milk yield,milk fat rate,peak milk yield and 305 day milk yield of calves in summer were higher,and the milk protein rate was lower.The urea nitrogen of calves in spring and autumn was higher.The peak day and somatic cell number of calving in winter were higher.The peak days of cows sampled in summer were higher,and the 305 day milk yield of cows sampled in spring and winter was higher.The year,parity,calving season and sampling season of the offspring of Holstein embryo transfer in Gansu province significantly affect the production performance.It is necessary to combine DHI data,dynamically adjust the ration nutrition ratio and optimize feeding management measures according to different influencing factors,so as to improve the per unit area yield level and breeding comprehensive benefits of dairy cows.关键词
胚胎移植/产奶性能/胎次/季节Key words
Embryo transfer/Milk production performance/Parity/Season分类
农业科技引用本文复制引用
姜徽,王红斌,陈世伟,李晓锐,武真邑..影响荷斯坦牛胚胎移植后代产奶性能的因素分析[J].中国奶牛,2025,(9):18-21,4.基金项目
甘肃省金昌市科技计划青年人才基金项目(2024RC005) （2024RC005）
2024年度国有资本经营预算支持省属企业科研项目(2024GZ024). （2024GZ024）
