Document Detail


The effect of several organic acids on phytate phosphorus hydrolysis in broiler chicks.
MedLine Citation:
PMID:  18339989     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Supplementation of some organic acids to a P-deficient diet has been shown to improve phytate P utilization. Two experiments were conducted from 0 to 16 d in battery brooders to determine the effect of various organic acids supplementation on phytate P utilization. In both experiments, birds were fed P-deficient corn and soybean meal-based diets. In experiment 1, citric acid, malic acid, fumaric acid, and EDTA were supplemented. Experiment 2 had a 2 x 2 factorial design with 2 sources of Met, 2-hydroxy-4-(methylthio) butanoic acid (HMB) and dl-Met, with or without 500 U/kg of phytase. In experiment 1, the addition of citric, malic, and fumaric acids increased percentage of bone ash, but only the effect of citric acid was significant. The addition of citric and malic acids also significantly increased the retention of P and phytate P (P<0.05). In experiment 2, the addition of phytase to the diet significantly increased 16-d BW gain, feed intake, percentage of bone ash, milligrams of bone ash, phytate P disappearance, and decreased the incidence of P-deficiency rickets. Methionine source did not affect 16-d BW gain, feed intake, feed efficiency, milligrams of bone ash, or P rickets incidence. However, the birds fed HMB had a higher percentage of bone ash and phytate P disappearance compared with the groups fed dl-Met only when phytase was added to the diets. The additions of citric acid and HMB improved phytate P utilization. However, the reason why some organic acids are effective whereas others are not is not apparent.
Authors:
A Liem; G M Pesti; H M Edwards
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Poultry science     Volume:  87     ISSN:  0032-5791     ISO Abbreviation:  Poult. Sci.     Publication Date:  2008 Apr 
Date Detail:
Created Date:  2008-03-14     Completed Date:  2008-07-10     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  0401150     Medline TA:  Poult Sci     Country:  United States    
Other Details:
Languages:  eng     Pagination:  689-93     Citation Subset:  IM    
Affiliation:
Department of Poultry Science, University of Georgia, Athens 30602-2772, USA. sidoagung@yahoo.com
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MeSH Terms
Descriptor/Qualifier:
6-Phytase / metabolism
Animal Nutritional Physiological Phenomena*
Animals
Body Weight / drug effects
Carboxylic Acids / administration & dosage*
Chelating Agents / metabolism
Chickens / metabolism*
Citric Acid / administration & dosage
Edetic Acid / administration & dosage
Female
Fumarates / administration & dosage
Malates / administration & dosage
Male
Minerals
Phosphorus / metabolism*
Phytic Acid / metabolism*
Poultry Diseases / metabolism
Random Allocation
Rickets / veterinary
Chemical
Reg. No./Substance:
0/Carboxylic Acids; 0/Chelating Agents; 0/Fumarates; 0/Malates; 0/Minerals; 110-17-8/fumaric acid; 60-00-4/Edetic Acid; 68439-86-1/bone ash; 6915-15-7/malic acid; 77-92-9/Citric Acid; 7723-14-0/Phosphorus; 83-86-3/Phytic Acid; EC 3.1.3.26/6-Phytase

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


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