Document Detail

The effects of phytase and phytic acid on the loss of endogenous amino acids and minerals from broiler chickens.
MedLine Citation:
PMID:  15115207     Owner:  NLM     Status:  MEDLINE    
1. The effects of myo-inositol hexaphosphate (IP6) and phytase (EC on the excretion of endogenous compounds were investigated using growing broiler chickens. 2. A total of 32 female Ross broilers were used in a precision feeding assay involving a 2 x 2 factorial arrangement of treatments. The materials administered were glucose, glucose + 1000 units of phytase activity (FTU), glucose + 1 g of IP6 and glucose + 1 g of IP6 + 1000 FTU. Excreta were collected quantitatively over a 48-h period following intubation of the test materials. The excretion of nitrogen, amino acids, minerals, sialic acid and phytate phosphorus was determined. 3. The ingestion of 1 g of IP6 by broilers increased the excretion of endogenous nitrogen, amino acids, iron, sodium, sulphur and sialic acid compared with birds fed on glucose. Supplementation of IP6 with exogenous phytase reduced the excretion of endogenous amino acids, calcium, sodium, phytate phosphorus and sialic acid compared with birds fed IP6. 4. It can be concluded that IP6 increases the excretion of endogenous minerals and amino acids in broiler chickens. Part of the beneficial effects of the addition of exogenous phytases to the diets of poultry appears to be mediated through a reduction in endogenous losses of these nutrients.
A J Cowieson; T Acamovic; M R Bedford
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  British poultry science     Volume:  45     ISSN:  0007-1668     ISO Abbreviation:  Br. Poult. Sci.     Publication Date:  2004 Feb 
Date Detail:
Created Date:  2004-04-29     Completed Date:  2004-07-29     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  15740290R     Medline TA:  Br Poult Sci     Country:  England    
Other Details:
Languages:  eng     Pagination:  101-8     Citation Subset:  IM    
Avian Science Research Centre, Scottish Agricultural College, Ayr, Scotland.
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MeSH Terms
6-Phytase / metabolism,  pharmacology*
Amino Acids / analysis,  metabolism*
Animal Nutritional Physiological Phenomena
Chickens / metabolism*
Feces / chemistry*
Glucose / administration & dosage,  metabolism
N-Acetylneuraminic Acid / analysis
Nitrogen / analysis
Phosphorus / analysis
Phytic Acid / analysis,  metabolism,  pharmacology*
Random Allocation
Reg. No./Substance:
0/Amino Acids; 131-48-6/N-Acetylneuraminic Acid; 50-99-7/Glucose; 7723-14-0/Phosphorus; 7727-37-9/Nitrogen; 83-86-3/Phytic Acid; EC

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