Document Detail

Net utilization of various levels of whole egg protein in pregnant rats.
MedLine Citation:
PMID:  1294709     Owner:  NLM     Status:  MEDLINE    
Net protein utilization (NPU) was examined in pregnant rats fed various levels (1, 3, 6, 10 and 20%) of whole egg protein (WEP), based on their obligatory nitrogen losses. On increase in dietary protein, nitrogen balance improved curvilinearly and the NPU decreased exponentially in both pregnant and nonpregnant rats. The utilization efficiency was high in rats fed marginally low protein diets, mainly due to lower urinary nitrogen levels than the obligatory levels of nitrogen loss. The NPUs in pregnant rats fed 1, 3, 6, 10 and 20% WEP diets were 103, 99, 78, 66 and 46, respectively. These values were 15 to 20% higher than those in nonpregnant rats because in pregnant rats obligatory urinary nitrogen loss was higher and the animals took more energy. The problems in application of the NPUs in pregnant rats for estimating the protein allowance of pregnant humans are discussed.
S Sakamoto; S Okasaki; M Ohnaka; Y Niiyama
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of nutritional science and vitaminology     Volume:  38     ISSN:  0301-4800     ISO Abbreviation:  J. Nutr. Sci. Vitaminol.     Publication Date:  1992 Oct 
Date Detail:
Created Date:  1993-04-14     Completed Date:  1993-04-14     Revised Date:  2003-11-14    
Medline Journal Info:
Nlm Unique ID:  0402640     Medline TA:  J Nutr Sci Vitaminol (Tokyo)     Country:  JAPAN    
Other Details:
Languages:  eng     Pagination:  501-10     Citation Subset:  IM    
Department of Nutrition, School of Medicine, University of Tokushima, Japan.
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MeSH Terms
Eating / physiology
Egg Proteins, Dietary / metabolism*
Energy Intake / physiology
Nitrogen / metabolism*,  urine
Nutritive Value
Pregnancy, Animal / metabolism,  physiology*
Rats, Sprague-Dawley
Reg. No./Substance:
0/Egg Proteins, Dietary; 7727-37-9/Nitrogen

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