Document Detail

Effect of androgen treatment on fear reactions in ewes.
MedLine Citation:
PMID:  8294115     Owner:  NLM     Status:  MEDLINE    
The effects of prolonged androgen treatment (testosterone propionate, 10 mg/day for 56 days) on fear reactions in ewes were studied using a battery of tests previously designed and validated. These tests involved situations classically reported to induce fear in sheep: isolation from conspecifics, surprise, and presence of a human. Testosterone-treated ewes differed from controls in a number of behavioral characteristics which indicate that they are less fearful in the various test situations. Their overall scores were respectively 9.5 vs 11.5 (P < 0.05) in the isolation test, 7.9 vs 13.1 (P < 0.001) in the surprise test, and 7.8 vs 13.2 (P < 0.001) in the human test. Testosterone treatment thus clearly reduces fear reactions in ewes subjected to nonsocial situations that are typically fear-eliciting.
M Vandenheede; M F Bouissou
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Hormones and behavior     Volume:  27     ISSN:  0018-506X     ISO Abbreviation:  Horm Behav     Publication Date:  1993 Dec 
Date Detail:
Created Date:  1994-03-03     Completed Date:  1994-03-03     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0217764     Medline TA:  Horm Behav     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  435-48     Citation Subset:  IM    
Laboratoire d'Etude du Comportement Animal, I.N.R.A. Centre de Tours-Nouzilly, France.
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MeSH Terms
Arousal / drug effects*
Fear / drug effects*
Habituation, Psychophysiologic / drug effects
Reaction Time / drug effects
Social Environment
Testosterone / pharmacology*
Reg. No./Substance:

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