...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of dairy science >The effect of a double dose of cloprostenol sodium on luteal blood flow and pregnancy rates per artificial insemination in lactating dairy cows
【24h】

The effect of a double dose of cloprostenol sodium on luteal blood flow and pregnancy rates per artificial insemination in lactating dairy cows

机译：氯吡啶酚钠对哺乳乳奶牛乳酸盐授精损伤血流和妊娠率的影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Inadequate luteolysis in fertility programs is aproblem for lactating dairy cows treated with a singledose of PGF_(2α). The proportion of cows with completeluteolysis can be increased by administering 2 dosesof PGF_(2α) 24 h apart. This study hypothesized that adouble dose of cloprostenol sodium (1.0 mg) could takethe place of 2 doses 24 h apart due to its enhancedhalf-life. Cows were allocated to receive 1 of 3 treatments:negative controls: 0.5 mg of cloprostenol sodium(single; n = 337); positive controls: two 0.5-mg dosesof cloprostenol sodium 24 h apart (two/24; n = 313);and treated: 1.0 mg of cloprostenol sodium (double; n= 298) at the final PGF_(2α) of Double-Ovsynch. Cowsreceived artificial insemination (AI) 16 h after finalGnRH of Double-Ovsynch. Pregnancy diagnosis wasdetermined at 24, 34, 62, and 184 d post-AI. Pregnancyloss was categorized in the following periods: between24 to 34, 34 to 62, and 62 to 184 d post-AI. Ultrasonography(B-mode and color Doppler) was used to assessluteal function pre- and posttreatment with variousdoses of cloprostenol sodium. Luteal volume and lutealblood flow (LBF) from d 7 and 14 corpora lutea weredetermined before treatment (d −1), and 2 and 4 dafter treatment. No evidence was observed of an effectof treatment on pregnancy rates per AI at 24, 34, or62 d post-AI. No effect was observed of treatment onpregnancy losses occurring between d 24 and 34, 34,and 62, and between 62 and 184 d post-AI. However,third-plus parity cows treated with the single treatmenthad greater pregnancy loss compared with two/24 anddouble between d 24 and 34 post-AI. Third-plus paritycows that received the double treatment had lower LBF2 and 4 d after treatment compared with cows treatedwith single. Amount of LBF present 4 d after treatmentwas not a predictor of pregnancy or pregnancy loss. Adouble dose (1.0 mg) of cloprostenol sodium may bea feasible alternative for fertility programs based onnondifferent outcomes to the two/24 treatment, lowerpregnancy losses, and reduced LBF disappearance followingtreatment in third-plus parity cows in comparisonwith the single treatment.
机译：生育方案中的曲调不足是一个用单一处理的乳酸奶牛哺乳奶牛的问题PGF_（2α）的剂量。奶牛比例完成通过施用2剂可以增加酸曲调PGF_（2α）分开24小时。这项研究假设一个双剂量的Clopostenol钠（1.0mg）可以采取由于其增强，2个剂量24小时的位置半衰期。分配奶牛以获得3个治疗方法：阴性对照：0.5mg Clopostenol钠（单身; n = 337）;阳性对照：两种0.5mg剂量氯醇烯醇钠24小时（2/24; n = 313）;并治疗：1.0毫克ClOlostenol钠（双重;ñ= 298）在双OVSynch的最终PGF_（2α）处。奶牛在决赛之后接受人工授精（AI）16小时gnrh双ovsynch。怀孕诊断是在24,34,62和184 d后确定。怀孕在以下期间分类损失：之间24至34,34至62和62至184 d后ai。超声检查（B模式和颜色多普勒）用于评估Luteal函数预先和后处理剂量的Clopostenol钠。氯化岩体积和肺炎来自D 7和14 Corpora Lutea的血流（LBF）是在治疗前确定（D -1），和2和4 d治疗后。没有任何证据被观察到效果在24,34或24,34，34，34的妊娠率对妊娠率的治疗62 d后ai。没有观察到治疗的影响在D 24和34,34之间发生妊娠损失，和62岁，介于62到184 d后ai。然而，三加上奇偶阶段用单一治疗治疗与两个/ 24和24和24次妊娠损失更大D 22和34之间的双倍。第三加上平价接受双治疗的奶牛有较低的LBF治疗后2和4 d与治疗的奶牛相比单身。治疗后LBF的量为4 d不是怀孕或妊娠损失的预测因子。一个可以是双剂量（1.0mg）的Clopostenol钠基于的生育计划的可行替代品两个/ 24治疗的非事项结果，降低怀孕损失，减少了LBF消失后相比之下，第三加阶段的治疗用单一的治疗。

著录项

  • 来源
    《Journal of dairy science》 |2021年第11期|12105-12116|共12页
  • 作者

    T. Minela; A. Santos; E. J. Schuurmans; E. L. Middleton; J. R. Pursley;

  • 作者单位

    Department of Animal Science Michigan State University East Lansing 48824;

    Department of Animal Science Michigan State University East Lansing 48824;

    Department of Animal Science Michigan State University East Lansing 48824;

    Department of Animal Science Michigan State University East Lansing 48824;

    Department of Animal Science Michigan State University East Lansing 48824;

  • 收录信息 美国《科学引文索引》(SCI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    dairy cow; pregnancy; cloprostenol sodium dose; luteal blood flow;

    机译：奶牛;怀孕;Clopostenol钠剂量;肺血流量;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号