不同季节不同生产因素对荷斯坦奶牛性控冻精人工输精受胎率的影响
Effect of Different Seasons and Production Factors on the Conception Rate of Sexually Controlled Frozen Semen by Artificially Insemination in Holstein Cows
杨伟刚 1李晓燕 1王建军 1王桃 1张金学1
作者信息
- 1. 武威市畜牧兽医科学研究院 甘肃武威 733000
- 折叠
摘要
为研究不同季节、不同胎次、不同发情方式及不同泌乳天数等因素对奶牛单个情期受胎率的影响,选取2169 头奶牛进行统计分析.结果显示,奶牛秋冬季配种受胎率较春夏季高,冬季情期受胎率显著高于春、夏两季(P＜0.05),初产奶牛情期受胎率高于经产奶牛(P＜0.01),自然发情情期受胎率极显著高于同期发情药物处理奶牛(P＜0.01),不同泌乳阶段对受胎率影响不大(P＞0.05).
Abstract
To study the effects of different seasons,parity,estrus patterns,lactation days,and other factors on the single estrus conception rate of cows,2169 cows were selected for the statistical analysis.The results showed that the conception rate of cows during autumn and winter mating was higher than that in spring and summer,and the conception rate during winter estrus was significantly higher than that in spring and summer(P＜0.05).The conception rate during the estrus period of primiparous cows was higher than that of multiparous cows(P＜0.01),and the conception rate during natural estrus was significantly higher than that of cows treated with estrus drugs(P＜0.01).Different lactation stages had little effect on the conception rate(P＞0.05).
关键词
奶牛/情期受胎率/胎次/自然发情/季节Key words
dairy cow/conception rate during estrus/parity/natural estrus/season引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据