在热带自由发育系统中的年轻超多产母猪中导致死产的因素
CongBang Ngo1, Rafa Boonprakob2, Padet Tummaruk1,3
1Department of Obstetrics, Gynaecology and Reproduction, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand.
Reproduction in domestic animals = Zuchthygiene
|August 2, 2024
概括
年轻的,高产母猪的死产与大量的产卵和更长的分娩间隔有关. 在分娩期间加强监测,特别是在60分钟后,可以帮助减少具有较高体重指数 (BMI) 和体重指数 (PI) 的小猪死产的发生率.
科学领域:
- 兽医医学 兽医医学 兽医医学
- 动物科学动物科学
- 生殖生物学 生殖生物学
背景情况:
- 猪生产中死产是一个重大问题,特别是在自由生育系统下的超多产母猪中.
- 了解导致死产的因素对于改善小猪生存率和养殖场利能力至关重要.
研究的目的:
- 调查热带自由生育环境中的年轻,过度繁殖的母猪中死产发生率相关的因素.
- 为了确定与小猪死产相关的生理和生殖变量.
主要方法:
- 一项涉及57头兰德雷斯×约克郡母猪和801头小猪的研究 (714头生猪,54头死猪).
- 记录生殖变量 (孕期长度,生育时间,子大小) 和小猪特征 (出生间隔,体重,BMI,PI,美染色,带状况).
- 根据子大小,出生顺序和生理参数分析死产率.
主要成果:
- 死产的发生率为6.7%,在大子 (≥17只小猪) 和较晚的出生顺序 (Q3-Q4) 中显著更高.
- 生死猪的累积分娩间隔较长,体重指数 (BMI) 和体重指数 (PI) 更高,染增加,带破裂更多.
- 在第一个小猪出生60分钟后,死产的风险显著增加.
结论:
- 年轻的,超多产母猪的死产与大 litter 尺寸,长时间的分娩间隔和特定的小猪生理指标 (高BMI,PI,染,带破裂) 有关.
- 建议加强对年轻母猪的生育监督,在60分钟的累积分娩间隔开始监测,以减轻死产风险,特别是在该过程中晚些时候出生的小猪身上.
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