| Endogenous amino acid flow in broiler chicks is affected by the age of birds and method of estimation. | |
| | |
MedLine Citation:
|
PMID: 18029805 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
The determination of ileal endogenous amino acid (IEAA) and total amino acid (TAA) concentrations is critical to standardizing amino acid digestibility coefficients. The IEAA and TAA flow in broiler chicks was measured on d 5, 15, and 21 at 2 geographical locations. Chicks were fed a nitrogen-free diet (NFD) or graded levels of casein (50, 100, or 150 g/kg of diet), which were assumed to be highly digestible. The IEAA and TAA flow (mg/kg of DM intake) on d 5 in chicks fed the NFD was higher (P < 0.05; Met = 154, Thr = 539) than values for d 15 (Met = 51, Thr = 274) and d 21 (Met = 50, Thr = 274). A comparison of the regression and NFD analyses showed higher (P < 0.05) flows on d 5 for those birds fed the NFD diet, with no differences between methods on d 15 and 21, with the exception of Lys, Met, and Glu (d 21). At all 3 ages evaluated, there was a linear increase (P < 0.05) in IEAA and TAA flows with increasing level of dietary casein. There was a decrease in IEAA and TAA flows that stabilized between d 15 and 21. The result suggests that the NFD and the regression method will give similar results on d 15 and 21. These observations also suggest that the relatively low apparent amino acid digestibility coefficients for broiler chicks at a younger age may be the result of a significantly high level of endogenous amino acid flow. |
| | |
Authors:
|
S A Adedokun; C M Parsons; M S Lilburn; O Adeola; T J Applegate |
Related Documents
:
|
4049955 - The influence of two different essential amino acid/keto analogue preparations on the c... 17986345 - Are we getting enough sulfur in our diet? 2899915 - Influence of total nitrogen, asparagine, and glutamine on mca tumor growth in the fisch... 12027135 - High protein intake during continuous hemodiafiltration: impact on amino acids and nitr... 8554345 - Differential effects of bovine pa28 on six peptidase activities of the lobster muscle p... 9842725 - Oligosaccharides generated by partial hydrolysis of the borate-rhamnogalacturonan ii co... |
Publication Detail:
|
Type: Controlled Clinical Trial; Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
|
Title: Poultry science Volume: 86 ISSN: 0032-5791 ISO Abbreviation: Poult. Sci. Publication Date: 2007 Dec |
Date Detail:
|
Created Date: 2007-11-21 Completed Date: 2008-01-30 Revised Date: 2008-11-21 |
Medline Journal Info:
|
Nlm Unique ID: 0401150 Medline TA: Poult Sci Country: United States |
Other Details:
|
Languages: eng Pagination: 2590-7 Citation Subset: IM |
Affiliation:
|
Department of Animal Sciences, Purdue University, 915 W. State Street, West Lafayette, IN 47907-2054, USA. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Aging
/
physiology* Amino Acids / administration & dosage, metabolism* Animal Feed Animal Nutritional Physiological Phenomena Animals Caseins / metabolism, pharmacology Chickens / metabolism* Diet / veterinary Dietary Proteins / metabolism* Dose-Response Relationship, Drug Gastrointestinal Contents Ileum Male |
| Chemical | |
Reg. No./Substance:
|
0/Amino Acids; 0/Caseins; 0/Dietary Proteins |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: An optimal dietary zinc level of broiler chicks fed a corn-soybean meal diet.
Next Document: Standardized ileal amino acid digestibility of meat and bone meal from different sources in broiler ...