丹麦群体的播种死亡率 - 生产系统之间的差异,年度和季节性趋势以及与群体大小的关联
1Department of Animal Science, Aarhus University, Blichers Allé 20, Tjele 8830, Denmark.
Preventive veterinary medicine
|August 17, 2025
概括
最初,在有机和传统群体中,母猪死亡率类似,但从2018年开始,在传统系统中增加. 群体大小和管理因素显著影响母猪的生存.
科学领域:
- 动物科学动物科学
- 兽医流行病学 兽医流行病学
- 畜牧业管理 畜牧业管理
背景情况:
- 在生猪生产中,母猪死亡率是一个重大问题.
- 住房和管理做法被怀疑会影响母猪死亡率.
- 有机和传统农业系统之间的差异可能会影响母猪的生存.
研究的目的:
- 为了建模和比较丹麦有机和传统牲畜 (2015-2022) 的母猪死亡率.
- 在两种系统中调查夏季,温度和种子死亡率之间的关联.
- 检查传统系统中群体规模和母猪死亡率之间的关系.
主要方法:
- 利用丹麦国家数据库获取母猪群数据 (2015-2022年).
- 在传统和有机系统中模拟母猪死亡率.
- 分析了与季节性母猪死亡率相关的温度数据.
- 调查了传统群体中群体大小与死亡率的相关性.
主要成果:
- 在前四年,在两种系统中,播种死亡率相似 (~10%).
- 传统的群体死亡率从2018年开始增加,到2022年达到14.4%.
- 在常规群体中发现了群体大小和母猪死亡率之间的正相关性.
- 对于这两种系统来说,夏季的死亡率都增加了,但只有有机系统的增加与高温有关.
结论:
- 播种死亡率明显与管理和住房因素有关.
- 虽然夏季的死亡率较高,但温度以外的因素显著影响母猪的存活率,特别是在传统系统中.
- 住房和管理的系统差异导致母猪死亡率的变化.
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