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首页> 外文期刊>Tropical Animal Health and Production >Effect of the combination of male effect with PGF2 alpha on estrus synchronization of hair sheep in Mexican tropic
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Effect of the combination of male effect with PGF2 alpha on estrus synchronization of hair sheep in Mexican tropic

机译：男性效应与PGF2α组合对墨西哥热带毛羊发情同步的影响

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The aim of this study was to evaluate the "male effect" at the end of protocol with prostaglandins (PG) on estrus synchronization of hair sheep during breeding season (November-December) in Yucatan, Mexico. Twenty female Pelibuey sheep (weighting 38.2 +/- 1.6 kg and body condition score of 2.5 +/- 0.5) were randomly distributed in two groups (n = 10). Group T1 (control, PG), two doses of 50 mu g of cloprostenol with 12 days between applications were applied; in the second group T2 (PG-ME), ewes received the same PG protocol plus the introduction of a male at the end of treatment. The interval of end treatment-onset of estrus was analyzed using survival test; the number of sheep with presence/absence of estrus was analyzed using Fisher's exact test. Ewes in estrus for groups T1 and T2 were 5 vs. 8, respectively. No significant differences were found as regards the interval end of treatment-onset of estrus (P > 0.05), as well as in total proportion of ewes with estrus and likewise in the duration of it (P > 0.05). We conclude that the protocol based on double dose of PGF2 alpha with interval of 12 days combined with the male effect is efficient to induce luteolysis and estrus synchronization in hair sheep.
机译：这项研究的目的是评估在墨西哥尤卡坦州繁殖季节（11月至12月）使用前列腺素（PG）对毛羊发情同步的“雄性效应”。将二十只雌性Pelibuey绵羊（体重38.2 +/- 1.6公斤，身体状况评分为2.5 +/- 0.5）随机分配到两组（n = 10）中。 T1组（对照组，PG）使用两次剂量的50μg氯前列腺素，每次间隔12天。在第二组T2（PG-ME）中，母羊接受了相同的PG方案，并在治疗结束时引入了雄性。使用生存测试分析发情的最终治疗发作间隔。使用Fisher精确检验来分析有无发情羊的数量。 T1和T2组的发情母羊分别为5对8。在发情的治疗发作的间隔期末（P> 0.05），发情的母羊的总比例以及持续时间方面，均无显着差异。我们得出的结论是，基于双剂量PGF2α（间隔为12天）与雄性作用相结合的方案可有效地诱导毛羊黄体溶解和发情同步。

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