对三种猪大规模人口减少方法的评估
Janice Y Park1, Magnus R Campler1, Ting-Yu Cheng1
1Department of Veterinary Preventive Medicine, The College of Veterinary Medicine, The Ohio State University, Columbus, Ohio, United States of America.
PloS one
|March 25, 2025
概括
使用水性泡,泡和二氧化碳进行大规模的猪人口减少,实现了100%的死亡率. 与二氧化碳相比,泡方法显示出更快的停止运动和更少的厌恶行为.
科学领域:
- 兽医科学 兽医科学 兽医科学
- 动物福利 动物福利
- 农业工程 农业工程
背景情况:
- 外国动物疾病的爆发对美国的猪种群构成重大威胁.
- 美国兽医协会 (AVMA) 推的当前减少猪群的方法不适合大型商业猪群.
- 对于猪来说,有必要制定有效且易于获得的大规模人口减少策略.
研究的目的:
- 评估和比较三种潜在的大规模猪人口减少方法的有效性和性能.
- 为了评估中等膨胀的水性泡,原型高膨胀的泡和二氧化碳气体.
- 为了确定适合为AVMA人口减少指南的候选人.
主要方法:
- 现场研究涉及793头猪,其中84头猪使用生物记录器监测心电图和运动数据.
- 手动收集猪的厌恶行为和猪运动强度的评估.
- 死后检查病变,重点关注呼吸系统影响和心脏骤停指标.
主要成果:
- 这三种方法 (水性泡,泡,二氧化碳) 都显示出100%的死亡率.
- 与二氧化碳相比,泡方法导致停止运动的时间显著缩短,并且有较少的厌恶行为.
- 基于水的泡显示出更高的距离气管封闭的发病率;在方法之间没有观察到心脏活动的差异.
结论:
- 大规模的水性泡,泡和二氧化碳是对猪有效的减少种群的方法.
- 基于泡的方法似乎在动物福利方面提供了优势,因为减少了厌恶行为和更快的失能.
- 这些方法被认为是可行的候选人,可以纳入AVMA对猪的人口减少指南.
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