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肉牛的阴道宽度较大,阴道毛囊数量较多,卵子活力较高,循环AMH更高

Renata Maculan¹, Gisvani Lopez de Vasconcelos², Jesús Alfonso Sánchez Viafara^3,4

¹Instituto Federal do Sul de Minas, Machado, MG, Brasil.

Animal reproduction

|February 27, 2025

概括

阴道宽度 (VW) 有效地预测牛中阴道毛囊数 (AFC) 和抗米勒尔激素 (AMH) 水平. 然而,这项研究没有发现这些指标与重点生殖表现指标之间的直接联系.

科学领域:

兽医科学兽医科学兽医科学
动物繁殖动物繁殖
遗传学遗传学是一个

背景情况:

生殖特征的低遗传性需要识别优越繁殖个体的标记物.
了解生殖指标之间的相互关系对于提高牛的生殖效率至关重要.

研究的目的:

为了研究 antral 毛囊数量 (AFC),阴道宽度 (VW) 和抗米勒尔激素 (AMH) 度之间的关系.
评估这些指标对*Bos Taurus*和*Bos Indicus*雌性动物的生育和生殖指数的影响.

主要方法:

收集了来自Brahman (*Bos Taurus-Indicus*) 和Simmental/Angus (*Bos Taurus-Taurus*) 牛的AFC,VW和AMH血清度的数据.
根据VW (大≥86毫米与小<86毫米) 进行分类的奶牛.
利用GLIMMIX程序分析VW和AMH对生殖参数的影响,例如第一次分娩的年龄,分娩间隔和每次怀孕的服务.

主要成果:

与VW小的奶牛相比,大VW的奶牛表现出明显更高的AFC,AMH度和可活卵细胞 (VO).
布拉曼牛的AFC,VW和AMH水平高于 taurine 品种的牛.
大众汽车被证明是两种基因组AFC和AMH度的有效预测器.

结论:

阴道宽度是牛卵巢储备标记 (AFC和AMH) 的可靠,非侵入性预测指标.
尽管VW,AFC和AMH之间存在很强的相关性,但这些标志物与本试验中研究的生殖性能指数 (例如,分娩间隔,每次怀孕的服务) 并没有直接相关.

关键词:

外部生殖器的外部生殖器生育能力生育能力生育能力生育能力这是一个荷尔蒙标记.生殖效率提高的生殖效率.有生命力的卵子细胞.

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