| Lysine requirements of pre-lay broiler breeder pullets: determination by indicator amino acid oxidation. | |
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MedLine Citation:
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PMID: 12949372 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The indicator amino acid oxidation (IAAO) method allows the determination of amino acid requirements under conditions of low growth rate as found in pre-laying broiler breeder pullets. Cobb 500 breeder pullets (20 wk old; 2290 +/- 280 g, n = 4) were adapted (6 d) to a pelleted, purified control diet containing all nutrients at >or=110% of NRC recommendations. After recovery from surgery for implantation of a jugular catheter, each bird was fed, in random order, test diets containing one of nine levels of lysine (0.48, 0.96, 1.92, 2.88, 3.84, 4.80, 7.68, 9.60 and 14.40 g/kg of diet). Indicator oxidation was determined during 4-h primed (74 kBq/kg body), constant infusions (44 kBq x h(-1). kg body(-1)) of L-[1-(14)C]phenylalanine. Using the breakpoint of a one-slope broken-line model, the lysine requirement was determined to be 4.88 +/- 0.96 g/kg of diet or 366 +/- 72 mg x hen(-1) x d(-1) with an upper 95% CI of 6.40 g/kg of diet or 480 mg x hen(-1) x d(-1). IAAO allows determination of individual bird amino acid requirements for specific ages and types of birds over short periods of time and enables more accurate broiler breeder pullet diet formulation. |
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Authors:
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Russell A Coleman; Robert F Bertolo; Soenke Moehn; Michael A Leslie; Ronald O Ball; Doug R Korver |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: The Journal of nutrition Volume: 133 ISSN: 0022-3166 ISO Abbreviation: J. Nutr. Publication Date: 2003 Sep |
Date Detail:
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Created Date: 2003-09-01 Completed Date: 2003-10-28 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0404243 Medline TA: J Nutr Country: United States |
Other Details:
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Languages: eng Pagination: 2826-9 Citation Subset: IM |
Affiliation:
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Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB, Canada T6G 2P5. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Amino Acids
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metabolism* Animals Carbon Radioisotopes Chickens / physiology* Lysine / administration & dosage* Nutritional Requirements Oviposition / physiology* Oxidation-Reduction Phenylalanine / metabolism* |
| Chemical | |
Reg. No./Substance:
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0/Amino Acids; 0/Carbon Radioisotopes; 56-87-1/Lysine; 63-91-2/Phenylalanine |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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