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Efficiency of methods applied for goat estrous synchronization in subtropical monsoonal climate zone of Southwest China

机译：西南亚热带季风气候区山羊发情同步方法的有效性

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Two experiments were undertaken to select the efficient method applied for goat estrous synchronization. In experiment 1, a total of 120 does (Capra hircus) were divided into five groups with a randomized block design, and the does of treatment 1 were synchronized by intravaginal sponges impregnated with 30 mg Levonorgestrel inserted for 10 days. Does of treatments 2, 3, and 4 were treated with further injection of 25 IU follicle-stimulating hormone (FSH), 0.05 mg prostaglandin F2 alpha (PGFl), and 25 IU FSH + 0.05 mg PGFl at sponge withdrawal, respectively. The does in the control group (n=40) without estrous synchronization treatment and natural estrous does were observed. In experiment 2, a total of 140 does in five goat farms in breeding and non-breeding seasons were treated with the selective efficient procedure. The results presented that all the employed treatments were capable of inducing and synchronizing estrous goats. According to estrous response and economy, the use of intravaginal sponges impregnated with 30 mg Levonorgestrel and 0.05 mg PGFl (treatment 3) is the first choice for estrous synchronization, and 95.0% of synchronized does demonstrated estrus, which was significantly higher than that of treatment 1 (P<0.05) and control group (P<0.01). The percentages of ovulating of treatments 3 and 4 were the same (95.0%), which were significantly higher than that of treatment 1 (P<0.01). The ovulation rates among different groups were not significant (P>0.05). When the selective procedure was applied to five goat farms, 85.7% (120/140) of does demonstrated estrus, and the kidding percentage, litter size, and prolificacy rate were 53.6%, 0.95, and 177%, respectively.
机译：进行了两个实验，以选择适用于山羊发情同步的有效方法。在实验1中，将120个dos（Capra hircus）随机分为五组，采用随机区组设计，并通过插入30 mg Levonorgestrel的阴道海绵浸泡10天使处理1的dos同步。处理2、3和4的剂量分别在海绵拔出时分别进一步注射25IU卵泡刺激激素（FSH），0.05mg前列腺素F2α（PGF1）和25IU FSH + 0.05mgPGF1。对照组（n ＝ 40）中未进行发情同步治疗，但观察到自然发情。在实验2中，采用选择性有效程序对五个山羊场在繁殖和非繁殖季节的140只山羊进行了处理。结果表明，所有采用的处理方法都能够诱导和同步发情的山羊。根据发情反应和经济性，使用浸渍有30 mg左炔诺孕酮和0.05 mg PGFl的阴道海绵（治疗3）是发情同步的首选，并且95.0％的同步化确实显示出发情，这明显高于发情。 1（P <0.05）和对照组（P <0.01）。处理3和4的排卵百分比相同（95.0％），显着高于处理1（P <0.01）。各组之间的排卵率差异均无统计学意义（P> 0.05）。当对5个山羊场进行选择性筛选时，有85.7％（120/140）的动物表现出发情状态，开玩笑率，窝产仔数和繁殖率分别为53.6％，0.95和177％。

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