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首页> 外文期刊>Indian Journal of Dairy Science >Efficacy of different estrus synchronization protocols on estrus induction response and conception rate in acyclic and cyclic crossbred cows
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Efficacy of different estrus synchronization protocols on estrus induction response and conception rate in acyclic and cyclic crossbred cows

机译：不同的雌性同步协议对非裂缝和循环杂交奶畜患者的影响和循环杂交响应的疗效

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摘要

A study was carried out under field conditions on 50 acyclic/anestrus and 50 cyclic/ repeat breeder HF crossbred cows to evaluate the efficacy of four standard estrus induction/ ovulation synchronization protocols, viz., Ovsynch (GPG), Ovsynch Plus (PMSG+GPG), Doublesynch (P-GPG) and Estradoublesynch (P-GPE) (10 cows in each protocol, and in untreated controls) in terms of estrus induction response and conception rates at induced estrus with fixed time AI (FTAI) and overall of 3 cycles. All the selected animals received pre-synchronization treatment, viz., Inj. Ivermectin s.c. and Tono-vita i.m. once and multimineral bolus once daily for 7 days. Repeat breeding cows received additional single shot i.m. injection of Enrofloxacin. All the anestrus andrepeat breeder cows (100 %) under all four treatment protocols exhibited induced estrus between 48 and 72 hrs from PGF2a injection. The conception rates obtained in anestrus cows at induced estrus (FTAI) and overall of three cycles post-treatment were 20.0 and 60.0% with Ovsynch; 20.0 and 50.0% with Ovsynch Plus; 40.0 and 80.0% with Doublesynch, and 30.0 and 60.0% with Estradoublesynch protocol, respectively. The corresponding conception rates in repeat breeder cows were 30.0 and 70.0% with Ovsynch; 30.0 and 50.0% with Ovsynch Plus; 40.0 and 80.0% with Doublesynch, and 20.0 and 60.0% with Estradoublesynch protocol, respectively. All non-conceived repeat breeding cows under each protocol, except 1 in Ovsynch Plus protocol,continued cycling, while among 10 anestrus cows each treated with Ovsynch, Ovsynch Plus, Doublesynch and Estradoublesynch protocol, 2, 2, 0 and 1 cows again turned out to be anestrus by 60 days post-induction/FTAI, respectively. Among the untreated control anestrus and repeat breeder cows (10 each), 2 and 3 cows conceived over a period of 90 days follow up giving overall conception rates of only 20.0 and 30.0%, respectively, as against the overall fertility rate of 62.5 and 65.0 % in treated anestrus and repeat breeder cows, respectively, over just mean 28-32 days of treatment, suggesting the economic utility of these protocols in handling the problem breeder cows under field conditions.
机译：在50个无环/ Anestrus和50个循环/重复育种者HF杂交奶牛的现场条件下进行研究，以评估四个标准的雌性感应/排卵同步协议，viz，Ovsynch（GPG），Ovsynch Plus（PMSG + GPG）的疗效），Doubesynch（P-GPG）和Estradublesynch（P-GPE）（每个方案中的10次奶牛，在未处理的对照中），在诱导的ASI（FTAI）和总体上的诱导性发情的诱发性雌性的概念速率方面循环。所有选定的动物都接受了同步前治疗，Viz。，Inj。伊维菌素S.C.和Tono-Vita I.M.一次和多型推子每天一次持续7天。重复育种奶牛接受了额外的单次拍摄。注射瑞氧氟沙星。所有四种治疗方案下的所有Anestrus和Repeat饲养员奶牛（100％）在PGF2A注射注射出现48至72小时之间的诱导性雌性。在诱导的Estrus（FTAI）的Anestrus奶牛中获得的概念率和治疗后三个循环的总体均为20.0％和60.0％，ovsynch; ovsynch plus 20.0和50.0％; Doubleyynch的40.0％和80.0％，分别与eStradublesynch协议分别为30.0和60.0％。 Repeed Breeder Cows的相应概念率为30.0％和70.0％，OVSynch; ovsynch plus 30.0和50.0％; Doubleynch的40.0和80.0％，分别与EstradubleSynch协议分别为20.0和60.0％。在每个协议下的所有非构建重复育种奶牛，除了OVSynch Plus协议中，持续循环，而10个Anestrus奶牛中的每个患有Ovsynch，Ovsynch Plus，Doubleyynch和EstradubleSynch协议，2,2,0和1奶牛再次出现在归纳后60天的艾雷森分别为归因于归纳/ FTAI。在未经处理的对照中和重复育种者奶牛（10人），2和3母牛在90天内设立，随后给予总体概念，分别为20.0％和30.0％，与62.5和65.0的整体生育率一样分别在治疗的Anestrus和重复育种者牛治疗中的百分比，恰好平均治疗，建议这些协议在现场条件下处理问题育种奶牛的经济效用。

著录项

  • 来源
    《Indian Journal of Dairy Science》 |2019年第2期|共6页
  • 作者

    AR Prajapati; AJ Dhami; KK Hadiya;

  • 作者单位

    Department of Animal Reproduction Gynaecology and Obstetrics College of Veterinary Science and Animal Husbandry Anand Agricultural University Anand-388 001 Gujarat India;

    Department of Animal Reproduction Gynaecology and Obstetrics College of Veterinary Science and Animal Husbandry Anand Agricultural University Anand-388 001 Gujarat India;

    Department of Animal Reproduction Gynaecology and Obstetrics College of Veterinary Science and Animal Husbandry Anand Agricultural University Anand-388 001 Gujarat India;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 乳品加工工业;
  • 关键词

    Crossbred cows; Cyclic; Acyclic; Conception rate; Estrus synchronization;

    机译：杂交奶牛;循环;无循环;构想率;雌性同步;

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