获得资源充足的环境对乳牛的认知和情感状态的影响
Malina Suchon1, Daniel M Weary1, Marina A G von Keyserlingk1
1Animal Welfare Program, Faculty of Land and Food Systems, The University of British Columbia, Vancouver, British Columbia, Canada.
PloS one
|May 16, 2025
概括
环境丰富改善了奶牛的情感状态,与标准住房相比,对奖励的敏感性降低了. 这表明,丰富的环境支持年轻牛的更好的情感福祉.
科学领域:
- 动物行为 动物行为
- 认知科学 认知科学
- 动物福利 动物福利
背景情况:
- 奶牛经常缺乏与母亲的接触和复杂的环境,可能会损害认知和情感的发展.
- 住房系统中的有限自然行为与对小牛福利的负面影响有关.
研究的目的:
- 研究环境复杂性对乳牛的社会认知和奖励敏感性的影响.
- 评估丰富的环境是否可以提高年轻牛的认知能力和情绪状态.
主要方法:
- 牛犊被配对安置,其中一组 (丰富) 每天可以进入一个具有社会和身体刺激的复杂,而控制组则有标准的配对安置.
- 社会认知是通过在Y迷宫中区分同类的能力来衡量的.
- 使用连续负对比测试评估了奖励灵敏度,该测试涉及不同的牛奶奖励.
主要成果:
- 环境丰富并没有影响小牛学会区分个体的能力.
- 在标准配对中,小牛对奖励的敏感度更高,通过增加接近降低奖励的延迟来表明.
- 丰富的小牛对奖励的敏感性较低,这表明它们的情感状态更为积极.
结论:
- 奶牛具备识别个体的能力,但学习不受测试环境复杂性的影响.
- 与丰富环境相比,标准的住房条件可能会导致小牛的负面情绪状况更差.
- 环境丰富似乎对乳牛的情感状态产生了积极的影响,这凸显了它对福利的重要性.
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