›› 2018, Vol. 36 ›› Issue (01): 86-90.

• • 上一篇    下一篇

中国荷斯坦牛产后体况与妊娠率相关性分析

贾先波1,1,刘文娇2,丁鹏1,陈仕毅1,王杰1,赖松家1   

  1. 1. 四川农业大学
    2. 中国奶业协会
  • 收稿日期:2017-06-21 修回日期:2018-01-18 出版日期:2018-02-28 发布日期:2018-11-29
  • 通讯作者: 赖松家 E-mail:laisj5794@gmail.com
  • 基金资助:
    四川省科技支撑计划项目;四川省科技支撑计划项目

Analysis of the relationship between cow body condition and pregnant rate for Chinese Holstein

  • Received:2017-06-21 Revised:2018-01-18 Online:2018-02-28 Published:2018-11-29

摘要: 摘要:奶牛产后体况是再次配种妊娠的重要影响因素。【目的】为了探讨奶牛产后体况与再次配种妊娠率之间的相关关系以及最佳的体况评分,【方法】试验选取了同一栋牛舍不同胎次的120头泌乳牛作为研究对象,泌乳牛产后60天自然发情配种,在配种日当天采用5分制的五部分综合评分法评定体况,并于授精后35天检胎,统计妊娠率。【结果】结果发现,高产奶牛群产奶量与妊娠率不存在显著相关。处于2.5-3分的泌乳牛妊娠率最高,且在所有的泌乳牛和1胎次泌乳牛中其均显著高于其它分值牛的妊娠率。【结论】奶牛体况评分影响配种妊娠率,在试验牛场最佳配种体况评分分值为2.5-3分。

关键词: 泌乳牛,体况评分,妊娠率,综合评分法

Abstract: Abstract:Body condition is an important factor for the next pregnancyt rate. 【objective】In order to investigate the relationship between body condition and the next pregnant rate, and the best body condition for pregnancy, 【method】this study selected 120 dairy cows in the same cow house at different parities. After 60 days of calving, these dairy cows were artificially inseminated during natural estrus. At the same time, they were also been scored from 1 to 5 using the 5 part of the comprehensive score to assess the body condition. Thirty-five days later, pregnancy detection was carried out to identify pregnantcy rate. 【result】The results found that no significant correlation between milk yield of high yield dairy cattle groupcows and pregnancy pregnant rate45.83% of dairy cows were scored at 3, and t. The highest pregnant rate of cows was best scored of dairy cows at score of 2.5 to 3 for pregnancy pregnant rate, and it was significant higher than that of other scores in total and 1st parity. 【conclusion】Our results suggested that are of practical guiding to improve the pregnancy rate of the test farm, even that of the farms in southwest regionthe pregnant rate of cows was significant affected by body condition, and the best body condition of cow was at 2.5 to 3 for pregnant rate.

Key words: dairy cow, body condition scored, pregnant rate, 5 part of the comprehensive score

中图分类号: 

  • S823.4