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评估在亚马逊地区养殖的水牛中缩短排卵同步协议中的孕激素装置重复使用

Hugo Haick Perdigão¹, Kamila Nascimento de Sá¹, Paloma Leandra Garcia Melo¹

¹Faculdade de Ciências Agrárias, Universidade Federal Do Amazonas, Manaus, AM, 69067-005, Brasil.

Tropical animal health and production

|February 11, 2025

概括

在长达28天的时间内,重复使用孕激素 (P4) 阴道内装置有效地同步了水牛的卵泡波,并防止了在亚马逊条件下的排卵. 较低的P4器件含量似乎更有效地对水牛的卵泡波同步.

科学领域:

生殖内分泌学和动物生殖科学.
兽医学和畜牧管理.
家庭动物的比较生理学.

背景情况:

排卵同步协议对于水牛有效人工授精至关重要.
生殖技术的经济可行性取决于所使用材料的成本效益.
以前的研究已经探索了孕激素 (P4) 阴道内装置在牛中的有效性,但对它们在水牛中的重复使用知之甚少.

研究的目的:

评估再利用孕激素 (P4) 阴道内装置以同步水牛毛囊发育的可行性.
评估P4设备重复使用时间对排卵同步和生殖结果的影响.
确定在亚马逊条件下在水牛中有效的卵泡波同步的最佳P4度.

主要方法:

一个反向设计实验,涉及15只雌雄水牛在三个时期.
测试新的P4设备 (GNew) 和7 (G7),14 (G14),21 (G21) 和28 (G28) 天重复使用的设备.
监测血清P4水平并进行卵巢超声检查,以评估卵泡发育和排卵.

主要成果:

重复使用长达28天的P4器件保持血清P4水平在1ng/mL以上,有效地防止排卵.
治疗GNew,G7和G14倾向于诱导持续的毛囊 (毛囊囊),而不是G21和G28.
血清P4度超过1.5ng/mL与更高的卵泡囊发病率有关.

结论:

重复使用P4阴道器件长达28天,可用于同步水牛的卵泡波,即使在亚马逊条件下也是如此.
这项研究表明,具有较低孕激素含量的P4阴道内装置在同步卵泡波方面更有效.
这项研究为改善水牛 (Bubalus bubalis) 的生殖效率提供了有价值的见解,通过具有成本效益的同步方法.

关键词:

在亚马逊亚马逊亚马逊亚马逊亚马逊这就是Bubalus bubalis.孕激素 (Progesterone) 是一种激素.生殖效率的提高生殖效率的提高

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