INFLUENCE OF A CONSPECIFIC AGEMATE ON DISTRESS BLEATING BY LAMBS

被引:43
作者
PORTER, RH
NOWAK, R
ORGEUR, P
机构
[1] Laboratoire de Comportement Animal, URA CNRS 1291, INRA
关键词
LAMBS; TWIN RECOGNITION; MATERNAL SEPARATION; DISTRESS BLEATS;
D O I
10.1016/0168-1591(95)00630-B
中图分类号
S8 [畜牧、 动物医学、狩猎、蚕、蜂];
学科分类号
0905 ;
摘要
Lambs typically display behavioral and physiological indicants of distress when they are removed from their mother. In the present experiment, we assessed the effects of the presence of agemate conspecifics on the rate of distress bleating by 3-week-old lambs immediately following maternal separation. When removed from,their mother and tested in isolation, lambs emitted more distress bleats than they did when paired with a social partner-either their twin (P <0.01) or an unfamiliar lamb (P < 0.05). Moreover, rates of distress bleating by paired unfamiliar lambs were greater than for familiar twins tested together (P < 0.02). The presence of an agemate lamb therefore appears to alleviate, at least to some extent, the stress associated with maternal separation. Lower rates of bleating by twin pairs in contrast with paired unfamiliar lambs suggest that twins recognize one another. Prior to testing, twins interacted closely and thereby had the opportunity to become mutually acquainted.
引用
收藏
页码:239 / 244
页数:6
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