Functional cerebral asymmetry in dogs living under different environmental conditions
Functional cerebral asymmetry in dogs living under different environmental conditions
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DOI：
10.1016/j.beproc.2019.05.023
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发表时间：
2019-08-01
影响因子：
1.3
通讯作者：
Pereira, Goncalo Da Graca
中科院分区：
文献类型：
--
作者：
Demirbas, Yasemin Salgirli;Isparta, Sevim;Pereira, Goncalo Da Graca
近年来，研究压力和功能性脑不对称（FCA）之间的联系一直是人们感兴趣的主题。在兽医学领域证明这种联系特别重要，因为测量FCA有可能成为评估犬应激的替代和非侵入性行为方法。本研究旨在探讨不同环境条件对犬FCA的影响。本研究的主要目的是探讨不同环境条件下犬FCA的变化。为此，用Kong试验测定了40只城市散养犬FCA的强度和方向。根据环境条件将犬分为4组：第1组（n = 8）为恢复的城市自由放养犬，饲养在丰富的庇护条件下。第2组（n = 9）为在家庭环境中生活超过1年的散养犬。第3组中的犬（n = 11）为城市自由放养犬，在犬收容所的单个笼中停留超过6个月。第4组（n = 12）中的犬被收养为城市自由放养犬，其在犬养恤金中停留超过30天。综合考虑犬在犬舍环境中的停留时间、生活条件质量和情绪状态，第3组和第4组中的犬被归类为慢性应激犬。在偏侧化强度和方向方面，组间存在统计学显著差异。第1组（87.5%）和第2组（77.8%）中的大多数犬显示出显著的爪子偏好，而第3组（72.7%）和第4组（75%）中的大多数犬被归类为双侧。考虑到第3组和第4组中犬的个体水平不对称性和犬的环境条件，可以认为高两侧性水平与慢性应激有关。因此，FCA降低可能不是压力敏感性的原因，而是压力情况的结果。这些结果首次证明了狗的慢性压力和两侧性之间可能存在的联系。
Investigating the link between stress and functional cerebral asymmetry (FCA) has been a subject of interest in recent years. The demonstration of this link in the field of veterinary medicine is particularly important as measuring FCA has the potential to be an alternative and non-invasive behavioral method to assess stress in dogs. The present study aimed to investigate whether FCA is affected by different environmental conditions in dogs.The main aim of this study was to investigate the changes in FCA in dogs living under different conditions. To this aim, strength and direction of FCA in 40 urban free -ranging dogs were measured by a Kong test. Dogs were divided into four groups considering their environmental conditions: The dogs in Group 1 (n = 8) were rehabilitated urban free ranging dogs, which were kept in enriched shelter conditions. The dogs in Group 2 (n = 9) were adopted free ranging dogs, which lived in home environment for more than 1 year. The dogs in Group 3 (n = 11) were urban free ranging dogs, which stayed in individual cages in a dog shelter for more than 6 months. The dogs in Group 4 (n = 12) were adopted urban free ranging dogs, which stayed in a dog pension for more than 30 days. Considering the length of their stay in a kennel environment, quality of living condition and emotional states, the dogs in Group 3 and 4 were classified as chronically stressed dogs.Statistically significant differences existed between groups considering strength and direction of lateralization. Most of the dogs in Group 1 (87.5 %) and Group 2 (77.8 %) showed significant paw preferences, whereas most of the dogs in the Group 3 (72.7 %) and Group 4 (75 %) were categorized as ambilateral. Considering the individual level asymmetry in dogs and environmental conditions of dogs in Group 3 and 4, one may suggest that high ambilaterality levels is related with chronic stress. Thus, reduced FCA may not be the reason for stress sensibility, rather it can be an outcome of stressful situations. These results are the first to demonstrate the possible link between chronic stress and ambilaterality in dogs.