Document Detail


Native corn starch versus either cellulose or glucose in the diet and the effects on apparent magnesium absorption in goats.
MedLine Citation:
PMID:  9276814     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The objective of this study was to determine whether dietary glucose or starch would reduce the inhibitory effect of high K intake on Mg absorption in ruminants. In a 6 x 6 Latin square design, six goats were fed diets with or without added KHCO3 containing either cellulose, glucose, or native corn starch. The K concentrations of the diets were 7.8 or 34.0 g or K/kg of dry matter, and carbohydrates were incorporated so that their concentrations were identical on a glucose equivalent basis (331 g of glucose/kg of dry matter). The intake of extra K significantly reduced apparent Mg absorption from 29.8 to 22.1% on average. Glucose, instead of cellulose, in the diet did not affect Mg absorption. Replacement of dietary cellulose by corn starch enhanced the mean efficiency of Mg absorption from 21.8 to 30.9%. Starch versus glucose increased Mg absorption by 5.8 percentage units. No statistically significant interaction was observed between the type of carbohydrate and the amount of K in the diet with regard to Mg absorption. This study showed that the inhibitory effect of dietary KHCO3 on Mg absorption in goats was fully counteracted by the replacement of cellulose with starch in the diet. Possible changes in the pH of ruminal fluid might have mediated the dietary effects on Mg absorption.
Authors:
J T Schonewille; L Ram; A T Van't Klooster; H Wouterse; A C Beynen
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of dairy science     Volume:  80     ISSN:  0022-0302     ISO Abbreviation:  J. Dairy Sci.     Publication Date:  1997 Aug 
Date Detail:
Created Date:  1997-10-02     Completed Date:  1997-10-02     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  2985126R     Medline TA:  J Dairy Sci     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1738-43     Citation Subset:  IM    
Affiliation:
Department of Large Animal Medicine and Nutrition, Faculty of Veterinary Medicine, Utrecht University, The Netherlands.
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MeSH Terms
Descriptor/Qualifier:
Absorption
Animals
Bicarbonates / administration & dosage
Body Weight
Cellulose / administration & dosage*
Diet*
Dietary Carbohydrates / administration & dosage
Female
Glucose / administration & dosage*
Goats / metabolism*
Magnesium / blood,  metabolism*
Potassium / administration & dosage
Potassium Compounds / administration & dosage
Starch / administration & dosage*
Chemical
Reg. No./Substance:
0/Bicarbonates; 0/Dietary Carbohydrates; 0/Potassium Compounds; 298-14-6/potassium bicarbonate; 50-99-7/Glucose; 7439-95-4/Magnesium; 7440-09-7/Potassium; 9004-34-6/Cellulose; 9005-25-8/Starch

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


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