estrous synchronization

  • 文章类型: Journal Article
    控制小反刍动物发情周期的激素方法在世界范围内被使用和发展,调整应用到精确的女性生理时刻,以提高生殖性能。发情周期可以被诱导和/或同步,旨在固定时间的人工授精,或者基于发情行为标志的授精,自然或引导交配。可以执行连续的方案以重新同步排卵并增加未能怀孕的女性的生殖结果。这些最近开发的治疗方法旨在在检测到非妊娠时更早地重新同步排卵。本综述旨在总结有关小反刍动物再同步方案的最新进展和主要发现。最后,我们提出了未来的观点和要研究的新路径。再同步化处理仍然是小反刍动物繁殖的一个发展领域,然而,在生殖结果中发现了一些增强,表明这种方案可以成功地用于绵羊和山羊生产。
    Hormonal methodologies to control small ruminants\' estrous cycle are worldwide used and evolved, adjusting the application to the precise female physiological moments to enhance reproductive performance. The estrous cycle can be induced and/or synchronized, aiming for fixed-time artificial insemination, or based on estrus behavior signs for insemination, natural or guided mating. Successive protocols can be performed to resynchronize ovulation and increase reproductive outcomes in females that failed to conceive. These recently developed treatments aim to resynchronize the ovulation as earlier as non-pregnancy is detected. The present review aimed to summarize the recent advances and main findings regarding resynchronization protocols used in small ruminants. Lastly, we present future perspectives and new paths to be studied in the subject. The resynchronization treatment is still a growing field in small ruminant reproduction, nevertheless, some enhancements are found in the reproductive outcome, showing that such protocols can be successfully used in sheep and goat production.
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