在气候变化中的猪生育能力
1Department of Animal Sciences, University of Illinois, Urbana-Champaign, IL 61801, USA.
Animal reproduction science
|June 25, 2024
概括
气候变化通过热应激影响了猪的生育能力,影响了生殖. 尽管一些地区的生育指标有所改善,尽管气候变暖,但广泛的气温上升可能会对猪生产产生更大的影响.
科学领域:
- 动物科学动物科学
- 环境科学 环境科学
- 生殖生物学 生殖生物学
背景情况:
- 气候变化正在增加全球气温和极端天气.
- 与气候变化相关的环境危害可能会对猪生产和生殖生育能力产生负面影响.
- 猪的子群体在夏季由于热应激而表现出降低的生育能力.
研究的目的:
- 评估将猪生育与气候变化联系起来的环境措施.
- 了解风险,并为热应激对猪繁殖的影响制定解决方案.
- 调查温度上升与猪生育指标之间的关系.
主要方法:
- 分析猪生育数据与温度变化和热应激天的关系.
- 在热应激下对猪生理,行为和料摄入量变化的评估.
- 在生育评估中考虑气候,年份,基因型和管理等因素.
主要成果:
- 高温和热应激日改变猪生理学,行为和料摄入量,可能影响卵泡发育,卵细胞质量,受孕和 litter 尺寸.
- 野猪的精子质量和产量随着夏季的炎热压力而下降.
- 尽管从1999年到2020年全球气温上升,但一些地区的雌性生育率 (产卵率, litter 尺寸) 改善,可能是由于区域气候缓冲或对易受感染的雌性进行除.
结论:
- 猪的生育能力受到气候,遗传学和管理实践的复杂相互作用的影响.
- 虽然生育率的降低并非普遍明显,但广泛的温度上升预计将使影响更容易被检测.
- 积极的环境管理策略对于减轻气候变化对猪生产和生育能力的影响至关重要.
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