Document Detail


Effect of dietary beta-carotene on the accumulation of beta-carotene and vitamin A in plasma and tissues of gilts.
MedLine Citation:
PMID:  11368244     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The absorption of beta-carotene in pigs is limited. Nevertheless beta-carotene might positively affect reproduction. In this study the absorption and tissue distribution of beta-carotene as well as its function as precursor of vitamin A was investigated in gilts that were fed according to one of three dietary treatments: VA (4000 IU vitamin A), VA + VA (4000 IU + 8300 IU) and VA + BC (4000 IU + 100 mg beta-carotene per kg diet) for 14 weeks. Only in the VA + BC group was beta-carotene detected in plasma (1-8 ng x mL(-1)), liver, adrenals and corpora lutea, indicating that pigs absorb intact beta-carotene at low rates. Liver levels of vitamin A were higher (P < 0.01) at comparable levels in the VA + VA and VA + BC group than in the VA group, indicating a conversion rate of beta-carotene to vitamin A of 40 to 1 on the basis of weight for beta-carotene at this level (100 mg x kg(-1)) in the diet. Higher levels of vitamin A in the uterus of the VA + BC group (P < 0.01) as well as the accumulation of beta-carotene in adrenals and corpora lutea might reflect some influence of beta-carotene on local vitamin A metabolism which might be of importance for reproductive performance in gilts.
Authors:
F J Schweigert; I Buchholz; A Schuhmacher; J Gropp
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Reproduction, nutrition, development     Volume:  41     ISSN:  0926-5287     ISO Abbreviation:  Reprod. Nutr. Dev.     Publication Date:    2001 Jan-Feb
Date Detail:
Created Date:  2001-05-22     Completed Date:  2001-06-14     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8913069     Medline TA:  Reprod Nutr Dev     Country:  France    
Other Details:
Languages:  eng     Pagination:  47-55     Citation Subset:  IM    
Affiliation:
Institute of Nutritional Science, University Potsdam, Potsdam-Rehbrücke, Germany. fjschwei@rz.uni-potsdam.de
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MeSH Terms
Descriptor/Qualifier:
Absorption
Adrenal Glands / metabolism
Animal Feed*
Animals
Corpus Luteum / metabolism
Female
Kidney / metabolism
Liver / metabolism
Lung / metabolism
Reproduction / drug effects
Swine / physiology*
Tissue Distribution
Uterus / metabolism
Vitamin A / blood,  metabolism,  pharmacology*
beta Carotene / blood,  metabolism,  pharmacology*
Chemical
Reg. No./Substance:
11103-57-4/Vitamin A; 7235-40-7/beta Carotene

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


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