Do hens have friends?
Do hens have friends?
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DOI：
10.1016/j.applanim.2012.12.003
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发表时间：
2013-01-15
影响因子：
2.3
通讯作者：
Collins, Lisa M.
中科院分区：
文献类型：
--
作者：
Abeyesinghe, Siobhan M.;Drewe, Julian A.;Collins, Lisa M.
最近对积极福利的兴趣促使人们考虑在养殖物种中形成社会积极关系，这可能提供一种管理积极状态的手段。我们详细调查了国内蛋鸡小群体中二元偏好关联的存在。在8周的时间里，在15只蛋鸡的8个相同的围栏内，研究了两种情况下（白天活动和晚上栖息）的空间和时间关联。没有观察到什么侵略行为。社会网络分析是为了调查谁与谁关联的相关性，使用加权程度（数字）和二进制（存在或不存在）数据来共享资源区域和与其他个体的接近程度。没有一致的证据表明母鸡在选择资源区域或同伴接近时积极地偏爱其他母鸡。将母鸡选择的栖息位置与随机选择模型产生的数据进行比较。母鸡没有表现出位置偏好。大多数二联体从未被观察到栖息在一起，尽管有些显然经常栖息在一起，但栖息的夜晚数量和一起度过的夜晚比例都很低，这表明这些发现应该谨慎解释。总的来说，我们没有发现令人信服的证据表明，活动和休息的接近度表达了二元优先关系。需要进一步的工作来证实这些发现是否在其他实验环境中也适用，是否受到社会经验的影响，以及它们是否与祖先亚种有共同之处。(C) 2012 Elsevier B.V.版权所有
Recent interest in positive welfare has encouraged consideration of the formation of socio-positive relationships in farmed species which may provide a means by which to manage positive states. We investigated in detail the existence of dyadic preferential associations in small groups of domestic laying hens. Spatial and temporal associations were examined in two contexts (day activity and evening roosting), within 8 identical pens of 15 laying hens over 8 weeks. Little aggression was observed. Social network analysis was performed to investigate correlations in who associated with whom using weighted degree (number) and binary (presence or absence) data for shared resource areas and proximity to other individuals. No consistent evidence was found for hens actively preferring others in their choice of resource area, or in companion proximity. Perch-roosting positions chosen by the hens were compared with data generated from a random-choice model. Hens showed no position preferences. Most dyads were never observed roosting together and, although some apparently perched together frequently, the low number of nights perching and proportion of nights spent together indicates these findings should be interpreted with caution. Overall, we found no convincing evidence of dyadic preferential relationships expressed by close active and resting proximities. Further work is required to confirm whether these findings hold true in other experimental contexts, are affected by social experience and if they hold in common with the progenitor sub-species. (C) 2012 Elsevier B.V. All rights reserved.