Document Detail


Pre- and postweaning food restrictions interact to determine reproductive success and milk volume in rats.
MedLine Citation:
PMID:  7666259     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
This study was designed to determine if nutrient availability during gestation and early life modifies the effects of subsequent dietary intake on reproductive and lactation performance. Rat pups, whose mothers had been allowed free access to food or were food-restricted to 50% of ad libitum consumption were assigned to free access or food restricted groups after weaning, creating 4 groups (pre- and postweaning diet). Pre- and postweaning diets interacted significantly to influence age at conception, number of pups born, and milk yield on d 14 of lactation. Early undernutrition deterred conception in dams later allowed free access to food and resulted in fewer pups born to dams later allowed free access to food, but not those in the food-restricted group. By d 15 of lactation, only dietary treatment after weaning influenced litter weight. Milk yield per gram dam weight was not impaired in the food restricted-ad libitum group but was lowered in dams in the ad libitum-food restricted group. Milk yield per gram litter weight was not impaired in ad libitum-food restricted dams but was reduced in food restricted-ad libitum dams. These results extend to the preweaning period our previous finding that past or current food restriction impairs reproductive success and decreases milk yield in rats.
Authors:
M K McGuire; A W Littleton; K J Schulze; K M Rasmussen
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  The Journal of nutrition     Volume:  125     ISSN:  0022-3166     ISO Abbreviation:  J. Nutr.     Publication Date:  1995 Sep 
Date Detail:
Created Date:  1995-10-10     Completed Date:  1995-10-10     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  0404243     Medline TA:  J Nutr     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  2400-6     Citation Subset:  IM    
Affiliation:
Division of Nutritional Sciences, Cornell University, Ithaca, NY 14853, USA.
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MeSH Terms
Descriptor/Qualifier:
Animals
Body Weight / physiology
Breeding
Cross-Over Studies
Female
Food Deprivation / physiology*
Gestational Age
Lactation / physiology*
Litter Size
Milk / secretion
Nutrition Disorders / physiopathology*
Rats
Rats, Sprague-Dawley
Reproduction / physiology*
Weaning*
Grant Support
ID/Acronym/Agency:
HD 14953/HD/NICHD NIH HHS; HD 28663/HD/NICHD NIH HHS

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


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