| Indirect calorimetry evaluation of dietary protein and animal fat effects on energy utilization of laying hens. | |
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MedLine Citation:
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PMID: 2704681 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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A multichamber indirect calorimeter was constructed and used to measure energy utilization of laying hens. Four basic diets were formulated by a least cost linear program for use in this study. The first diet was formulated to meet the 1984 National Research Council (NRC) recommendations and contained by analysis 14.5% protein, .58% TSAA, and .68% lysine (designated NRC). The second diet (NRCAA) was formulated to the same amino acid specifications without a protein restriction and contained 12.9% protein, .57% TSAA, and .69% lysine. Another pair of diets was formulated with higher protein (HP) and amino acid restrictions. The HP diet contained 16% protein, .67% TSAA, and .85% lysine; whereas the HPAA diet had 14% protein, .68% TSAA, and .86% lysine. Four additional diets were formulated with the inclusion of 3% animal fat, using the same protein and amino acid restrictions as were used to formulate the first four diets. Animal fat supplementation significantly (P less than .05) improved energy balance (retention) of birds fed all formulations compared with the diets without added fat. Formulation of a diet based on amino acid restrictions significantly increased net energetic efficiency of birds fed amino acid levels higher than those recommended by the NRC (79.2 for HPAA vs. 62.1% for HP), but did not significantly affect net efficiency of birds fed the lower amino acid levels (NRC and NRCAA). |
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Authors:
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R Rising; P M Maiorino; J Alak; B L Reid |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Poultry science Volume: 68 ISSN: 0032-5791 ISO Abbreviation: Poult. Sci. Publication Date: 1989 Feb |
Date Detail:
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Created Date: 1989-05-19 Completed Date: 1989-05-19 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0401150 Medline TA: Poult Sci Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 258-64 Citation Subset: IM |
Affiliation:
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Animal Sciences Department, University of Arizona, Tucson 85721. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Animal Feed* Animals Body Temperature Regulation Calorimetry Chickens / metabolism* Dietary Fats / metabolism* Dietary Proteins / metabolism* Energy Metabolism* Female |
| Chemical | |
Reg. No./Substance:
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0/Dietary Fats; 0/Dietary Proteins |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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