| 泌乳早期发情和乏情奶牛机体代谢和生殖机能的变化 |
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| 引用本文： | 夏成,朱玉哲,吴晨晨,张洪友,徐闯,郑家三,王洪斌.泌乳早期发情和乏情奶牛机体代谢和生殖机能的变化[J].中国兽医杂志,2010,46(2). |
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| 作者姓名： | 夏成 朱玉哲 吴晨晨 张洪友 徐闯 郑家三 王洪斌 |
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| 作者单位： | 1. 黑龙江八一农垦大学动物科技学院,黑龙江,大庆,163319
2. 东北农业大学动物医学学院,黑龙江,哈尔滨,150030 |
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| 摘 要： | 在某一集约化牛场,随机选取奶牛30头,在奶牛产后发情期(50～90 d)内根据奶牛是否发情将奶牛分为发情组和乏情组。通过对试验奶牛血液生化指标(Glu、BHBA、NEFA)、内分泌指标(FSH、LH、LP、E2、P4)等进行调查和检测。结果显示:当奶牛发情时,机体血浆Glu、FSH、LH、E2和LP浓度高,血浆NEFA、P4浓度低,但乏情时正好相反。当奶牛发情时,血浆leptin与LH、E2呈显著正相关,与P4呈显著负相关,但乏情奶牛未呈现相关性。这些结果提示奶牛乏情与机体能量代谢状况和Ins、Gn、E2、P4、Lp分泌少有关。能量平衡能促进奶牛产后发情,与机体高水平血糖、Lp、FSH、LH、E2和低水平P4、NEFA有关。LP是奶牛泌乳早期发情的一个重要调控因子,在奶牛产后能量平衡、生产性能和繁殖性能之间起到一个平衡纽带的作用。
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| 关 键 词： | 奶牛 发情期 机体代谢 生殖机能 |
Change of metabolism and reproduction in estrus and anestrus dairy cows during early lactation |
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| XIA Cheng,ZHU Yu-zhe,WU Chen-chen,ZHANG Hong-you,XU Chuang,ZHENG Jia-san,WANG Hong-bin.Change of metabolism and reproduction in estrus and anestrus dairy cows during early lactation[J].Chinese Journal of Veterinary Medicine,2010,46(2). |
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| Authors: | XIA Cheng ZHU Yu-zhe WU Chen-chen ZHANG Hong-you XU Chuang ZHENG Jia-san WANG Hong-bin |
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| Institution: | XIA Cheng1,ZHU Yu-zhe1,WU Chen-chen1,ZHANG Hong-you1,XU Chuang1,ZHENG Jia-san1,WANG Hong-bin2(1.College of Animal Science , Technology,Hei Longjiang Aug.1st Agricultural University,Daqing 163319,China,2.College of Veterinary Medicine,Northeast Agricultural University,Harbin 150030,China) |
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| Abstract: | Thirty dairy cows were randomly divided into estrus group(E) and anoestrus group(A).The blood biochemical parameters(Glu,BHBA and NEFA) and endocrine parameters(FSH,LH,Lp,E2 and P4) were also examined in both groups.Results showed that there was a higher plasma concentration of Glu,LH,E2 and Lp,a lower plasma concentration of NEFA,P4 in E group compared with that in A group,a significant positive correlation between plasma leptin and plasma LH,E2,a notable negative correlation between plasma leptin and P4 i... |
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| Keywords: | dairy early lactation estrus metabolism reproductive traits |
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