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探索疼痛对小牛奖励损失反应的影响

Thomas Ede^1,2, Marina A G von Keyserlingk³, Daniel M Weary³

¹Animal Welfare Program, Faculty of Land and Food Systems, University of British Columbia, 2357 Main Mall, Vancouver, BC, V6T 1Z6, Canada. thomas.ede92@gmail.com.

Scientific reports

|September 16, 2023

概括

脱芽的疼痛可能会改变年轻的霍尔斯坦牛犊对减少牛奶奖励的反应. 这项研究使用了连续负对比 (SNC) 范式来测量经历疼痛的小牛的负面影响.

科学领域:

动物行为动物行为
动物福利科学动物福利科学
疼痛研究疼痛研究

背景情况:

负面的情绪状态可以相互加剧.
连续负对比 (SNC) 范式是评估负影响的验证方法.
脱芽是牛中常见的一种程序,可能会引起疼痛.

研究的目的:

为了调查是否疼痛从 disbudding 影响小牛对奖励下调的反应.
评估SNC范式在测量小牛负面影响方面的实用性.
评估疼痛缓解策略对小牛的反应的影响.

主要方法:

荷尔斯坦牛犊 (n=30) 被训练来接近一个牛奶奖励.
牛犊被分配到三个组:用标准止痛药进行散花,用补充止痛药进行散花,或假冒散花.
给予奖励下调 (0.5L到0.1L),并记录了延迟,发声和施加的压力.

主要成果:

测试会和每日试验之间的相互作用被观察到,用于压力应用在disbudded组.
发音在假装和散花 + 止痛组中显示了相互作用.
SNC范式显示了测量小牛的负面影响的潜力.

结论:

连续的负对比 (SNC) 范式显示了评估小牛负情绪状态的前景.
在芽过程中经历的疼痛可能会影响小牛对奖励减少的反应.
需要进一步的研究,以充分理解牛的疼痛和情感反应之间的关系.

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