BEHAVIORAL STRATEGIES OR JUST INDIVIDUAL VARIATION IN BEHAVIOR - A LACK OF EVIDENCE FOR ACTIVE AND PASSIVE PIGLETS

被引:44
作者
JENSEN, P [1 ]
RUSHEN, J [1 ]
FORKMAN, B [1 ]
机构
[1] AGR CANADA, RES STN, LENNOXVILLE, PQ J1M 1Z3, CANADA
关键词
AGGRESSION; COPING; STRESS; PIGS;
D O I
10.1016/0168-1591(95)00554-6
中图分类号
S8 [畜牧、 动物医学、狩猎、蚕、蜂];
学科分类号
0905 ;
摘要
We criticize the recent paper by Hessing et al. (1993, Appl. Anim, Behav. Sci., 37: 285-295), where it is concluded that there are ''consistent individual behavioural strategies in social and nonsocial situations in pigs'', resembling the active and passive coping strategies of mice. We argue: (1) The authors have not demonstrated that the underlying distributions of individuals deviate from a normal distribution. Thus the existence of two distinct types of individuals is a premise of the research and not a conclusion. It is arrived at by choosing arbitrary cut-off points. (2) The social test used is not suited for determining individual characteristics, and the so called back test is difficult to interpret. It has not been verified that the back test is a non-social test. (3) The two-way classification based on these two tests excludes a substantial proportion of the piglets. We conclude that the authors provide no evidence for distinct individual types of piglets.
引用
收藏
页码:135 / 139
页数:5
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