Document Detail

Nutritional status and behavior during lactation.
MedLine Citation:
PMID:  7568445     Owner:  NLM     Status:  MEDLINE    
Effects of chronic maternal food restriction and time of day on maternal and pup behaviors were examined in ovariectomized Sprague-Dawley rats (n = 26). Dams were fed ad lib (AL) or were restricted to 85% (85 AL) or 70% (70 AL) of ad lib intake. Dams and their 5-pup litters were observed for 45 min at night on days 9, 14, and 19 of lactation and during the day on day 14. A novel behavioral instrument was used to observe maternal and pup behaviors. At night, food-restricted animals engaged in more nursing behaviors than AL animals. Differential pup stimuli may account for this difference. AL animals engaged in more nursing behaviors during the day than night, whereas 70 AL animals demonstrated the opposite diurnal pattern. Time of feeding may explain this difference. On the other hand, 85 AL animals behaved similarly during the day and at night. Therefore, alterations in circadian behavior patterns are less pronounced in rats mildly restricted (85 AL) than in rats more food restricted (70 AL).
H Pachón; M K McGuire; K M Rasmussen
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Physiology & behavior     Volume:  58     ISSN:  0031-9384     ISO Abbreviation:  Physiol. Behav.     Publication Date:  1995 Aug 
Date Detail:
Created Date:  1995-11-03     Completed Date:  1995-11-03     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  0151504     Medline TA:  Physiol Behav     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  393-400     Citation Subset:  IM    
Division of Nutritional Sciences, Cornell University, Ithaca, NY 14853, USA.
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MeSH Terms
Behavior, Animal / physiology*
Circadian Rhythm / physiology
Eating / physiology
Lactation / psychology*
Maternal Behavior / physiology
Nesting Behavior / physiology
Nutritional Status*
Rats, Sprague-Dawley
Grant Support

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

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