Document Detail

Responses of female rhesus macaques to an environmental enrichment apparatus.
MedLine Citation:
PMID:  2395320     Owner:  NLM     Status:  MEDLINE    
Environmental enrichment devices are a potential way to enhance psychological well-being in laboratory animals. The effects of such devices need to be systematically evaluated before they are recommended for widespread use. The purpose of this research was to monitor the behavioural and physiological responses of adult female rhesus macaques to a simple enrichment device. The apparatus consisted of a box attached to the monkey's home cage that contained a radio and a food dispenser, which could be controlled by the monkeys via contact detectors. Radio and food dispenser use were automatically recorded. Whole blood serotonin (WBS), plasma cortisol and abnormal behaviour were measured in 5 monkeys before, during and after a 20-week period in which the monkey's cages were equipped with the device. All monkeys used the device (3 of the 5 subjects earned an average of more than 200 food pellets per day). Mean plasma cortisol and whole blood serotonin did not differ across sampling times, suggesting that the apparatus had no effect on basal stress levels. There was an inverse relationship between apparatus use and cortisol levels in 76% of the samples, but only 3 of 17 coefficients were significant. There was a significant but small negative correlation between apparatus use and self-abusive behaviour. This enrichment device was readily used by adult rhesus monkeys and could be adapted for use in a wide variety of laboratory settings.
S W Line; A S Clarke; H Markowitz; G Ellman
Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Laboratory animals     Volume:  24     ISSN:  0023-6772     ISO Abbreviation:  Lab. Anim.     Publication Date:  1990 Jul 
Date Detail:
Created Date:  1990-10-10     Completed Date:  1990-10-10     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  0112725     Medline TA:  Lab Anim     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  213-20     Citation Subset:  IM    
California Primate Research Center, University of California, Davis 95616.
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MeSH Terms
Animals, Laboratory / blood,  psychology
Behavior, Animal*
Hydrocortisone / blood
Macaca / psychology*
Macaca mulatta / blood,  psychology*
Play and Playthings*
Serotonin / blood
Grant Support
Reg. No./Substance:
50-23-7/Hydrocortisone; 50-67-9/Serotonin

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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