Individual coping characteristics, aggressiveness and fighting strategies in pigs
Individual coping characteristics, aggressiveness and fighting strategies in pigs
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DOI：
10.1016/j.anbehav.2004.09.013
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发表时间：
2005-05-01
期刊：
影响因子：
2.5
通讯作者：
Wiegant, VM
中科院分区：
文献类型：
--
作者：
Bolhuis, JE;Schouten, WGP;Wiegant, VM
个体猪，苏斯克罗法，在遇到不熟悉的同种动物时，它们的攻击性有很大的不同。我们研究了猪的个体应对特征是否能预测猪在社会交往中的攻击性以及由此产生的社会地位。仔猪在哺乳期间进行了反向测试，因为他们在这个测试中的行为反应似乎可以预测他们的应对方式。每头仔猪被限制在仰卧位1分钟，并对阻力（即逃跑尝试次数）进行评分。断奶后，将30头“高抗性”（HR）和30头“低抗性”（LR）猪与体重相近的陌生猪重新分组，记录它们180分钟的攻击行为。此外，我们还评估了每头猪的社会等级。HR猪比LR猪表现出更强的攻击性行为：在观察期间，他们发起更多的战斗，更早开始战斗，花更多的时间战斗。然而，HR和LR猪在达到的社会等级上没有差异。LR猪的主动打架水平与社会等级呈正相关，而HR猪无此关系。综上所述，猪的应对方式与其混合后的攻击行为和优势关系的建立有关。我们的研究结果表明，LR猪在使用攻击方面是灵活的，而HR猪无论在遭遇中是否成功，都具有高水平的攻击，这表明这些动物在攻击行为上更为僵化。(c) 2005年动物行为研究协会。Elsevier Ltd.出版。所有的紧身衣都保留。
Individual pigs, Sus scrofa, differ considerably in how aggressive they are during encounters with unfamiliar conspecifics. We examined whether individual coping characteristics of pigs were predictive of aggression during social encounters and the resulting social status. Piglets were subjected to the Backtest during the suckling period, as their behavioural response in this test seems to be predictive of their coping style. Each piglet was restrained in a supine position for 1 min and the resistance (i.e. number of escape attempts) was scored. After weaning, 30 'high-resisting' (HR) and 30 'low-resisting' (LR) pigs were regrouped with unfamiliar pigs of similar weight and we recorded their aggressive behaviour for 180 min. In addition, we assessed the social rank of each pig. HR pigs showed more aggressive behaviour than LR pigs: they initiated more fights, started fighting earlier and spent more time fighting during the observation period. HR and LR pigs did not differ, however, in achieved social rank. Level of self-initiated fighting was positively correlated with social rank in LR pigs, but this relation was not found in HR pigs. In conclusion, the coping style of pigs is related to their aggressive behaviour and the establishment of dominance relationships after mixing. Our results indicate that LR pigs are flexible in using aggression, whereas the high level of aggression of HR pigs regardless of their success in encounters suggests that these animals are more rigid in their aggressive behaviour. (c) 2005 The Association for the Study of Animal Behaviour. Published by Elsevier Ltd. All tights reserved.