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在2周大的小牛中割后持续疼痛的评估
S Yoo1, M A G von Keyserlingk1, D M Weary1
1Animal Welfare Program, Faculty of Land and Food Systems, 2357 Main Mall, The University of British Columbia, Vancouver, BC V6T 1Z6, Canada.
Animal : an international journal of animal bioscience
|December 13, 2025
概括
增加小牛的短躺期表明割后的疼痛. 带割比手术割更痛苦,这表明撒谎行为是年轻牛的关键疼痛指标.
科学领域:
- 兽医科学 兽医科学 兽医科学
- 动物行为 动物行为
- 疼痛管理 疼痛管理
背景情况:
- 由于具体方法有限,评估割后小牛的疼痛是具有挑战性的.
- 了解疼痛指标对于改善牲畜中的动物福利至关重要.
- 以前的研究表明,说谎行为和记忆可以反映疼痛和认知负载.
研究的目的:
- 评估谎言行为和记忆变化作为割后小牛疼痛指标.
- 为了比较带和外科割方法之间的疼痛反应.
- 评估梅洛西卡姆作为补充疼痛管理策略的疗效.
主要方法:
- 40只14天大的雄牛被分配给带或手术割,有或没有 meloxicam.
- 监测谎言行为使用加速度计从4到42天的年龄.
- 在割后的第1周和第4周,每天使用修改后的洞板测试来评估小牛的记忆力.
主要成果:
- 割后,小牛出现了更多的短时间躺病,这表明初始止痛效果不足.
- 带割的小牛在割后的第二天比手术割的小牛更短暂地躺着.
- 没有观察到割方法或梅洛西卡姆对记忆或以后行为的显著影响.
结论:
- 增加短暂的躺着时间是割后年轻小牛疼痛的可靠指标.
- 带割似乎比手术割在手术后的立即时期引起更多的疼痛.
- 需要进一步的研究来探索长期疼痛指标,并优化小牛的疼痛管理策略.
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