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Santiago Gerardo Corva¹, German Ariel Dominguez², Javier Sanchez³

¹Instituto de Investigaciones en Reproducción Animal (INIRA), Facultad de Ciencias Veterinarias, Universidad Nacional de La Plata, La Plata, BA, Argentina B1900AVW.

Journal of dairy science

|May 12, 2025

概括

经历子宫健康事件 (UTE) 的奶牛在同一哺乳期内面临更高的妊娠损失风险. 较高的牛奶产量也会增加这种风险,而多次授精宣布怀孕 (AIDP) 实例和季节性因素会影响结果.

科学领域:

兽医医学兽医医学兽医医学
生殖生物学生殖生物学
乳制品科学乳制品科学

背景情况:

奶牛的怀孕损失会影响群体的生产力和经济.
了解影响单个哺乳期内流产的因素对于管理至关重要.

研究的目的:

描述和分析在商业奶牛群中同一个哺乳期内流产的发生和风险因素.
为了调查子宫健康事件 (UTE),非子宫健康事件 (NUTE),平价,人工授精宣布怀孕 (AIDP) 事件的数量,季节和怀孕流产之间的关联.

主要方法:

一项回顾性研究,使用阿根廷11263头奶牛的25019个哺乳记录.
通过诊断后的热检测,观察到堕胎或通过超声波进行公开诊断来定义的妊娠损失.
考克斯的比例危险模型用于分析风险因素,包括健康状况,平价,AIDP,季节,DIM和牛奶生产.

主要成果:

总体流产率为22.5%,每21天发生3.7%.
患有UTE的奶牛的妊娠损失风险明显更高 (HR 1.24).
增加的牛奶产量与更高的妊娠流产风险相关 (HR 1.02 每 1 公斤增加).
具有2或3个AIDP事件的母牛与具有1个AIDP事件的母牛相比,妊娠损失的风险较低.
与夏季相比,在秋季和冬季患有AIDP的奶牛的妊娠损失风险较低.

结论:

哺乳期的健康事件,特别是尿道,显著增加了在同一哺乳期内流产的风险.
较高的牛奶产量是流产的危险因素.
群体持续到下一个哺乳期受到怀孕流产事件的影响.
平价数并没有显著增加流产风险,但多次AIDP事件显示出保护作用.

关键词:

卫生事件是指健康事件.群体的坚持群体的坚持牛奶生产牛奶生产怀孕期间的损失怀孕期间的损失有关风险因素的风险因素.

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