在受热压力条件下的牛受精和随后受孕的因素
Siriporn Kanwichai1, Duanghathai Saipinta1, Sasithorn Panasophonkul1
1Faculty of Veterinary Medicine, Chiang Mai University, Chiang Mai 50100, Thailand.
Animals : an open access journal from MDPI
|June 27, 2024
概括
在牛授精过程中,最优的受孕率发生在雌激发检测后24小时. 诸如多种雌性体征,粘性宫粘液和较低的体温等因素可以提高成功率,特别是在热带环境中.
科学领域:
- 兽医医学 兽医医学 兽医医学
- 动物繁殖 动物繁殖
背景情况:
- 人工授精 (AI) 时间对于牛的受孕率至关重要.
- 在热带气候下,热应激会对乳牛的繁殖产生负面影响.
研究的目的:
- 为了比较人工智能的怀孕率在12小时,24小时和36小时后.
- 为了确定影响24小时后雌激期怀孕的因素,包括雌激期迹象,生殖特征和热应激.
主要方法:
- 在泰国22个配套牛奶农场进行的研究.
- 收集的数据是关于精液注射时的雌性征兆,生殖道特征和热应激因素.
- 用于分析受孕率的重复后勤回归模型.
主要成果:
- 与AI观察到的最高受孕率 (67.5%) 在经期检测后24小时内.
- 怀孕风险增加与2-3次性雌性征兆,粘性或没有宫粘液有关.
- 较高的体温和相对湿度降低了受孕机会.
结论:
- 推将人工智能推迟到24小时以检测雌性期后,以改善怀孕.
- 多种雌性体征,特定的宫粘液特征和较低的体温提高了怀孕的成功.
- 管理策略应解决热应激问题,以优化热带乳制品养殖中的AI结果.
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