Document Detail

Induction of maternal behavior in non-parturient adoptive mares.
MedLine Citation:
PMID:  12213513     Owner:  NLM     Status:  MEDLINE    
An attempt was made to elicit maternal behavior in non-parturient Welsh pony mares through a combination of hormonal treatment and vaginal-cervical stimulation (VCS). Lactation was induced in 16 nonpregnant, non-parturient mares via a combination of estradiol, progesterone and a dopamine antagonist (sulpiride). During the adoption trials, each lactating mare was confined behind a padded bar and a newborn foal was held near her head. Eight of the mares received two 3-min periods of VCS when the foster foal was introduced. Following VCS, the foal was released and its interactions with the adoptive mare observed until the acceptance criterion was met (i.e. the mare accepted the foal at the udder with no signs of aggression). The remaining eight adoptive mares were treated in the same manner but did not receive VCS. All 16 non-parturient mares eventually accepted and nursed their adopted foal. However, acceptance latencies were significantly shorter for mares in the VCS condition than for those without VCS, and did not differ between the VCS condition and a group of control mares with their biological offspring. In subsequent choice tests, both groups of foster mares (with/without VCS), like the control mares, displayed a preference for their 'own' foal. Once the non-parturient mares accepted their foster foal, their maternal behavior resembled that of control mothers. The positive effect of VCS on maternal acceptance may reflect a release of oxytocin triggered by this treatment.
R H Porter; G Duchamp; R Nowak; P F Daels
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Physiology & behavior     Volume:  77     ISSN:  0031-9384     ISO Abbreviation:  Physiol. Behav.     Publication Date:  2002 Sep 
Date Detail:
Created Date:  2002-09-05     Completed Date:  2002-12-04     Revised Date:  2003-11-14    
Medline Journal Info:
Nlm Unique ID:  0151504     Medline TA:  Physiol Behav     Country:  United States    
Other Details:
Languages:  eng     Pagination:  151-4     Citation Subset:  IM    
Copyright Information:
Copyright 2002 Elsevier Science Inc.
UMR 6073 PRC, Laboratoire de Comportement, INRA-CNRS-Université de Tours, 37380 Nouzilly, France.
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MeSH Terms
Administration, Topical
Behavior, Animal*
Cervix Uteri / drug effects
Dopamine Antagonists / pharmacology
Estradiol / pharmacology
Horses / psychology*
Maternal Behavior*
Progesterone / pharmacology
Progesterone Congeners / administration & dosage,  pharmacology
Sulpiride / pharmacology
Trenbolone / administration & dosage,  analogs & derivatives*,  pharmacology
Vagina / drug effects
Reg. No./Substance:
0/Dopamine Antagonists; 0/Progesterone Congeners; 10161-33-8/Trenbolone; 15676-16-1/Sulpiride; 50-28-2/Estradiol; 57-83-0/Progesterone; 850-52-2/altrenogest

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

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