The effects of mixing on behavior and circadian parameters of salivary cortisol in pigs

被引：43

作者：

Ekkel, ED

Savenije, B

Schouten, WGP

Wiegant, VM

Tielen, MJM

机构：

[1] UNIV UTRECHT,FAC VET,DEPT HERD HLTH & REPROD,NL-3508 TD UTRECHT,NETHERLANDS

[2] AGR UNIV WAGENINGEN,DEPT ANIM HUSB,SECT ETHOL,NL-6700 AH WAGENINGEN,NETHERLANDS

[3] AGR UNIV WAGENINGEN,DEPT HUMAN & ANIM PHYSIOL,NL-6709 PJ WAGENINGEN,NETHERLANDS

[4] UNIV UTRECHT,RUDOLF MAGNUS INST NEUROSCI,DEPT MED PHARMACOL,NL-3584 CG UTRECHT,NETHERLANDS

[5] ANIM HLTH SERV SO NETHERLANDS,NL-5282 SC BOXTEL,NETHERLANDS

来源：

PHYSIOLOGY & BEHAVIOR | 1997年 / 62卷 / 01期

关键词：

pigs; stress; mixing; transportation; behavior; cortisol; circadian rhythm;

D O I：

10.1016/S0031-9384(97)00037-1

中图分类号：

B84 [心理学];

学科分类号：

04 ; 0402 ;

摘要：

The present study describes an experiment that was carried out to study the effects of mixing pigs once at 25 kg, preceded by transportation for 1.5 h, on the behavior and the circadian rhythmicity of salivary cortisol. The frequency of agonistic interactions was higher for mixed pigs. This was not only the case immediately after mixing, when pigs started to fight to establish a new social rank (p < 0.05), but also 5 to 6 weeks later; still more headknocks and bite's towards other pigs were seen at that time among mixed pigs (p < 0.01). However, neither the basal cortisol concentration, assessed as the MESOR of the circadian rhythm of salivary cortisol, nor the amplitude of that rhythm was different between the groups. (C) 1997 Elsevier Science Inc.

引用

页码：181 / 184

页数：4

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