在接受定时人工授精的哺乳乳奶牛中,步行活动的相对增加:风险因素和随后的生育能力
E Rojas Canadas1, I García-Ispierto1
1Agrotecnio Center, Department of Animal Sciences, University of Lleida, Lleida 25198, Spain.
Animal reproduction science
|January 11, 2025
概括
健康的产后奶牛表现出增加的行走活动和雌激发表达,导致定时人工授精 (TAI) 中更好的怀孕率. 这突显了乳牛产后健康,活动和生殖成功之间的联系.
科学领域:
- 动物科学动物科学
- 生殖生物学 生殖生物学
- 乳牛管理 乳牛管理
背景情况:
- 乳牛产后健康障碍可能会对生殖能力产生负面影响.
- 监测牛的活动和雌性表达对于早期检测和管理至关重要.
- 定时人工授精 (TAI) 协议被广泛用于提高生殖效率.
研究的目的:
- 为了评估产后健康障碍,走路活动的相对增加 (RIWA) 和乳牛的雌激素强度之间的关联.
- 为了评估RIWA和在接受TAI的奶牛中怀孕成功之间的关系.
- 确定影响RIWA的因素及其对生殖结果的影响.
主要方法:
- 在产后期和随后的TAI协议期间,监测了881只哺乳乳奶牛.
- 根据产后健康状况 (健康,生殖障碍,代谢障碍,临床乳腺炎) 将奶牛分类.
- 使用计步器测量RIWA和行为;怀孕通过超声波确认.
主要成果:
- 健康的奶牛表现出更大RIWA的倾向,并且比患有分娩后疾病的奶牛更频繁地表现出雌激.
- RIWA与TAI,双胞胎怀孕和季节的卵巢状况有关.
- 带有黄体,怀着双胞胎或在寒冷季节繁殖的奶牛的RIWA较高.
- 健康的奶牛和那些表现出雌激素的奶牛每次TAI怀孕的数量显著增加.
结论:
- 在乳牛中保持良好的产后健康与增加的活动,更强烈的雌激素表达和TAI后改善的怀孕率有关.
- RIWA和雌性表达可以作为根据TAI协议管理的奶牛的生殖潜力的指标.
- 解决产后健康障碍对于优化乳牛群的繁殖性能至关重要.
关键词:
乳牛牛奶牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛牛表达行为性性欲的表达.生育能力 生育能力 生育能力群体健康管理管理群体健康管理产后期是分娩后的一段时间.过渡时期的牛是过渡时期的牛.更多相关视频
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