An Approach Study for Reducing the Early Embryonic Loss in Egyptian Buffalo-cows

M. Abo-Farw, O. Elmalky, Emad Fawzy Elmaghraby, Hassab Allah Abdul Gwad Abu Elghait, M. Aboul-Omran
{"title":"An Approach Study for Reducing the Early Embryonic Loss in Egyptian Buffalo-cows","authors":"M. Abo-Farw, O. Elmalky, Emad Fawzy Elmaghraby, Hassab Allah Abdul Gwad Abu Elghait, M. Aboul-Omran","doi":"10.11648/j.aap.20200502.17","DOIUrl":null,"url":null,"abstract":"This study evaluated the efficacy of a single gonadotropin-releasing hormone (GnRH) agonist on day 12 or human chorionic gonadotropin (hCG) on day 7 post-mating on pregnancy rate (PR) of repeat breeder buffaloes. Buffaloes (n=21) in heat were naturally mated, and divided into three groups (7 in each). Animals in the 1st group (G1) were i.m. injected with 5 ml GnRH on 12-day post-mating, while those in G2 were i.m. injected with 1500 IU of hCG on day 7 post-mating. In G3, animals were kept as control. Results show that PR was higher (P<0.05) in G1 (71.428) and G2 (57.142) than G3 (28.571). The peak of serum P4 was recorded (P<0.05) on day 15 in G2, and day 18 in G1 and G3. On days 21 and 24 post-mating, P4 was the highest (P<0.05) in G1, followed by G2, and the lowest in G3. Average CL diameter increased (P<0.05) CL in G1and G2 compared with G3 on days 15 and 18 post-mating. The concentration of P4 was higher in pregnant than in non-pregnant animals on different post-mating days, regardless of treatment. The concentration of P4 was the highest in pregnant of G2, and the lowest in non-pregnants of G3, being more obvious from 18 to 24-day post-mating. Injection of repeat breeder lactating buffaloes with 5 ml GnRH or 1500 IU hCG on day 12 and 7 post-mating, respectively, improved P4 production and pregnancy rate. GnRH treatment reduced the early embryonic loss showing the highest pregnancy rate to increase the farmer economy.","PeriodicalId":211651,"journal":{"name":"Advances in Applied Physiology","volume":"34 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2020-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advances in Applied Physiology","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.11648/j.aap.20200502.17","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0

Abstract

This study evaluated the efficacy of a single gonadotropin-releasing hormone (GnRH) agonist on day 12 or human chorionic gonadotropin (hCG) on day 7 post-mating on pregnancy rate (PR) of repeat breeder buffaloes. Buffaloes (n=21) in heat were naturally mated, and divided into three groups (7 in each). Animals in the 1st group (G1) were i.m. injected with 5 ml GnRH on 12-day post-mating, while those in G2 were i.m. injected with 1500 IU of hCG on day 7 post-mating. In G3, animals were kept as control. Results show that PR was higher (P<0.05) in G1 (71.428) and G2 (57.142) than G3 (28.571). The peak of serum P4 was recorded (P<0.05) on day 15 in G2, and day 18 in G1 and G3. On days 21 and 24 post-mating, P4 was the highest (P<0.05) in G1, followed by G2, and the lowest in G3. Average CL diameter increased (P<0.05) CL in G1and G2 compared with G3 on days 15 and 18 post-mating. The concentration of P4 was higher in pregnant than in non-pregnant animals on different post-mating days, regardless of treatment. The concentration of P4 was the highest in pregnant of G2, and the lowest in non-pregnants of G3, being more obvious from 18 to 24-day post-mating. Injection of repeat breeder lactating buffaloes with 5 ml GnRH or 1500 IU hCG on day 12 and 7 post-mating, respectively, improved P4 production and pregnancy rate. GnRH treatment reduced the early embryonic loss showing the highest pregnancy rate to increase the farmer economy.
减少埃及水牛早期胚胎损失的方法研究
本研究评估了在交配后第 12 天使用单次促性腺激素释放激素(GnRH)激动剂或第 7 天使用人绒毛膜促性腺激素(hCG)对重复配种水牛妊娠率(PR)的影响。发情水牛(21 头)自然交配后分为三组(每组 7 头)。第一组(G1)的动物在交配后 12 天静注 5 毫升 GnRH,G2 的动物在交配后第 7 天静注 1500 IU hCG。G3 组动物作为对照组。结果显示,G1(71.428)和G2(57.142)的PR高于G3(28.571)(P<0.05)。G2 的血清 P4 在第 15 天达到峰值(P<0.05),G1 和 G3 则在第 18 天达到峰值(P<0.05)。交配后第 21 和 24 天,G1 的 P4 最高(P<0.05),G2 次之,G3 最低。交配后第 15 和 18 天,G1 和 G2 的 CL 平均直径比 G3 增加(P<0.05)。在交配后的不同天数,无论采用何种处理,妊娠动物的 P4 浓度均高于非妊娠动物。G2妊娠动物的P4浓度最高,G3非妊娠动物的P4浓度最低,这在交配后18至24天更为明显。分别在交配后第 12 天和第 7 天对重复繁殖的哺乳水牛注射 5 毫升 GnRH 或 1500 IU hCG,可提高 P4 的产生量和妊娠率。GnRH 治疗减少了早期胚胎损失,显示出最高的妊娠率,从而提高了农民的经济效益。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
自引率
0.00%
发文量
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信