Document Detail


Protein and energy relationships in the broiler chicken. Effects of protein quantity and quality on metabolism.
MedLine Citation:
PMID:  8297905     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Male broiler chickens growing from 7 to 35 d were fed on a diet containing 150 g crude protein (N x 6.25)/kg diet supplemented with lysine to equal that in diets containing 166, 183 and 200 g crude protein/kg diet (Expt 1). A second group of male broiler chickens growing over the same period were fed on a diet containing 120 g crude protein/kg supplemented with lysine, arginine, tryptophan, threonine and isoleucine equal to that in diets containing 144, 172 and 200 g crude protein/kg diet (Expt 2). Growth was improved by lysine supplementation but not to the level attained by feeding 200 g crude protein/kg (Expt 1). Lysine, arginine, tryptophan, threonine and isoleucine supplementation of a low-protein diet also improved growth, but growth again fell short of that attained by feeding a diet containing 200 g crude protein/kg. Plasma insulin-like growth factor-1 and thyroxine concentrations increased and triiodothyronine decreased as the crude protein level increased from 150 to 200 g/kg diet. Supplemental lysine did not affect plasma levels of these hormones. Although dietary crude protein levels noticeably changed rates of in vitro lipogenesis, changing either the level of a single limiting amino acid or the levels of several limiting amino acids did not change lipogenesis.
Authors:
R W Rosebrough; J P McMurtry
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  The British journal of nutrition     Volume:  70     ISSN:  0007-1145     ISO Abbreviation:  Br. J. Nutr.     Publication Date:  1993 Nov 
Date Detail:
Created Date:  1994-03-10     Completed Date:  1994-03-10     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0372547     Medline TA:  Br J Nutr     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  667-78     Citation Subset:  IM    
Affiliation:
Livestock and Poultry Sciences Institute, United States Department of Agriculture-Agricultural Research Service, Beltsville Agricultural Research Center, MD 20705.
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MeSH Terms
Descriptor/Qualifier:
Amino Acids / administration & dosage*
Animals
Arginine / administration & dosage
Body Weight
Chickens / growth & development,  metabolism*
Dietary Proteins / administration & dosage*
Energy Metabolism / physiology*
Insulin-Like Growth Factor I / metabolism
Isoleucine / administration & dosage
Lipids / biosynthesis*
Lysine / administration & dosage
Male
Threonine / administration & dosage
Thyroxine / blood
Triiodothyronine / blood
Tryptophan / administration & dosage
Chemical
Reg. No./Substance:
0/Amino Acids; 0/Dietary Proteins; 0/Lipids; 56-87-1/Lysine; 67763-96-6/Insulin-Like Growth Factor I; 6893-02-3/Triiodothyronine; 72-19-5/Threonine; 73-22-3/Tryptophan; 73-32-5/Isoleucine; 74-79-3/Arginine; 7488-70-2/Thyroxine

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


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