Document Detail


Amniotic fluid is important for the maintenance of maternal responsiveness and the establishment of maternal selectivity in sheep.
MedLine Citation:
PMID:  22445380     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
Amniotic fluid (AF) is important for the establishment of maternal behaviour in inexperienced ewes, but its role in experienced mothers remains to be studied. Here, the maintenance of post-partum maternal responsiveness and the establishment of exclusive bonding was investigated in multiparous ewes when AF was removed from the neonate or/and physical contact with the young was precluded for the first 4 h post partum. Maintenance of maternal responsiveness and establishment of exclusive bonding were measured by the proportion of mothers accepting their own lamb and alien lambs that had been either washed or not washed, and by comparing an acceptance score for each type of lamb. The acceptance score was computed by summing standardised variables of acceptance (low bleats, acceptance at udder, nursing and licking time) and subtracting standardised variables of rejection (high-pitched bleats, rejection at the udder and aggressive behaviour). Washing the neonate reduced its acceptance score, but the proportion of mothers rejecting their own lamb was reduced only when washing the neonate and prevention of physical contact for 4 h were combined (7/15 v. 0/10 in controls, P = 0.02). In addition, washing the neonate increased the acceptance score of the washed alien lamb, but not of the unwashed alien. However, washing and privation of physical contact did not increase significantly the proportion of mothers accepting an alien lamb at 4 h post partum. We conclude that AF is important in experienced ewes for the establishment of maternal responsiveness, as already found in primiparous mothers. In addition, our results indicate that AF also carries some chemosensory information facilitating exclusive bonding.
Authors:
P Poindron; J Otal; G Ferreira; M Keller; V Guesdon; R Nowak; F Lévy
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Animal : an international journal of animal bioscience     Volume:  4     ISSN:  1751-732X     ISO Abbreviation:  Animal     Publication Date:  2010 Dec 
Date Detail:
Created Date:  2012-03-26     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101303270     Medline TA:  Animal     Country:  England    
Other Details:
Languages:  eng     Pagination:  2057-64     Citation Subset:  IM    
Affiliation:
1INRA, UMR85 Physiologie de la Reproduction et des Comportements, CNRS, UMR6175, Université de Tours, F-37041 Tours, Haras Nationaux, F-37380 Nouzilly, France.
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