在野外条件下对完成猪的水性泡脱落程序的改进:福利影响和后勤方面
Magnus R Campler1, Ting-Yu Cheng1, Andréia G Arruda1
1Department of Veterinary Preventive Medicine, College of Veterinary Medicine, The Ohio State University, Columbus, OH, USA.
Preventive veterinary medicine
|July 9, 2023
概括
基于水的泡 (WBF) 减少人数需要具体的有效性和动物福利指导方针. 更快的泡填充率和更高的泡水平将猪的痛苦降到最低,并在紧急情况下加快心脏活动停止.
科学领域:
- 兽医科学 兽医科学 兽医科学
- 动物福利 动物福利
- 应急管理 应急管理
背景情况:
- 水性泡 (WBF) 是一种在紧急情况下快速减少猪人口的研究方法.
- 建立最佳准则对于方法的可靠性,有效性和最大限度地减少动物痛苦至关重要.
研究的目的:
- 评估泡填充水平和填充速度对猪厌恶反应和心脏活动停止时间的影响.
- 为了确定猪中WBF脱种群的最佳参数.
主要方法:
- 两项试验使用完成猪,其WBF停留时间为7.5分钟.
- 试验1:各种泡填充水平 (1.5,1.75,2.0倍头部高度).
- 试验2:各种泡填充速度 (缓慢,中等,快速),生物记录器记录活动和心脏活动.
主要成果:
- 更快的泡填充速度和更高的填充水平减少了猪的厌恶反应.
- 随着更快的填充速度,停止运动的时间显著缩短.
- 在快速泡率组中,心脏活动停止的时间明显较短 (P=0.04).
- 没有观察到发声或需要二次安乐死.
结论:
- 填充速度较慢和泡水平较低可能会延长心脏活动停止.
- 建议参数:最低泡填充水平是猪头高度的两倍,填充率在60秒内覆盖猪.
- 这些参数尽量减少厌恶反应,加快人口减少的有效性,同时优先考虑动物福利.
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