Document Detail

The effects of four nursery rearing strategies on infant behavioral development in rhesus macaques (Macaca mulatta).
MedLine Citation:
PMID:  19653949     Owner:  NLM     Status:  MEDLINE    
Nursery rearing is the single most important risk factor in the development of severe forms of abnormal behavior, such as self-biting, in rhesus macaques. This practice is common in research laboratories and typically involves continuous pair housing of infants without maternal contact. We examined the effects of variation in peer socialization on the behavioral development of rhesus infants by exposing 32 newborn infants to 4 different socialization routines: continuously paired; intermittently paired; continuously paired rotationally (partners rotated within the group once a week); and intermittently paired rotationally. Analyses revealed that infants paired intermittently exhibited 'floating limb' and self-biting behavior at significantly higher frequencies than those reared by using any other strategy. Results also suggested that continuous pairing was most effective in reducing the development of abnormal behaviors (that is, self-bite and floating limb), whereas intermittent pairing significantly reduced partner clinging and geckering. A principal component analysis revealed that floating limb behavior and self-biting are strongly associated. Self-biting began as early as 32 d of age, and a negative binomial regression on data of floating limb and self-biting revealed that early development of floating limb behavior predicts self-biting behavior later in development. Despite the significant effects of rearing strategies on the frequency of abnormal behaviors, we note that animals in all 4 treatment groups developed these traits to some degree. We suspect that the solitary incubator environment may be a trigger for the development of abnormal behaviors.
Ina Rommeck; Daniel H Gottlieb; Sarah C Strand; Brenda McCowan
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, N.I.H., Extramural    
Journal Detail:
Title:  Journal of the American Association for Laboratory Animal Science : JAALAS     Volume:  48     ISSN:  1559-6109     ISO Abbreviation:  J. Am. Assoc. Lab. Anim. Sci.     Publication Date:  2009 Jul 
Date Detail:
Created Date:  2009-08-05     Completed Date:  2009-10-23     Revised Date:  2013-06-02    
Medline Journal Info:
Nlm Unique ID:  101269489     Medline TA:  J Am Assoc Lab Anim Sci     Country:  United States    
Other Details:
Languages:  eng     Pagination:  395-401     Citation Subset:  IM    
Animal Behavior Graduate Group, The University of California, Davis, California, USA.
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MeSH Terms
Aging / physiology*,  psychology
Behavior, Animal / physiology*
Bites and Stings / prevention & control,  veterinary*
Housing, Animal*
Linear Models
Macaca mulatta / physiology*,  psychology
Grant Support

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

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