Document Detail

Protein expression of pectoralis major muscle in chickens in response to dietary methionine status.
MedLine Citation:
PMID:  16571149     Owner:  NLM     Status:  MEDLINE    
The present study evaluated the effect of dietary methionine on breast-meat accretion and protein expression in skeletal muscle of broiler chickens in vivo. All broilers received a common pre-test diet up to 21 d of age, and were subsequently fed either a methionine-deficient (MD) or -adequate (MA) diet (3.1 v. 4.5 g/kg diet) from age 21 to 42 d. Dietary cystine levels were 3.7 v. 3.6 g/kg diet for the MD and MA diet, respectively. Detrimental effects on carcass yield (P=0.004), abdominal fat percentage (P=0.001), and breast-meat weight (P=0.001), yield (P=0.001), and uniformity (P=0.002) were observed and validated in birds fed MD diets. Via tandem MS, a total of 190 individual proteins were identified from pectoralis major (PM) muscle tissue. From the former composite, peptides from three proteins were observed to be present exclusively in breast muscle from those chickens fed the MD diet (pyruvate kinase, myosin alkali light chain-1, ribosomal-protein-L-29). No proteins were observed to be uniquely expressed in chickens fed MA diets. Research is warranted to further explore the possibility of the proteins pyruate kinase, myosin alkali light chain-1, or ribosomal protein L-29, as potential biological indicators of differences in protein expression of PM of chickens in response to a dietary methionine deficiency.
A Corzo; M T Kidd; W A Dozier; L A Shack; S C Burgess
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The British journal of nutrition     Volume:  95     ISSN:  0007-1145     ISO Abbreviation:  Br. J. Nutr.     Publication Date:  2006 Apr 
Date Detail:
Created Date:  2006-03-30     Completed Date:  2006-06-05     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  0372547     Medline TA:  Br J Nutr     Country:  England    
Other Details:
Languages:  eng     Pagination:  703-8     Citation Subset:  IM    
Department of Poultry Science, Mississippi State University, MS 39762, USA.
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MeSH Terms
Animal Nutritional Physiological Phenomena
Chickens / growth & development,  metabolism*
Dietary Supplements
Meat / analysis
Methionine / administration & dosage*,  deficiency
Muscle Development / drug effects
Muscle Proteins / metabolism*
Pectoralis Muscles / drug effects*,  growth & development,  metabolism
Weight Gain / drug effects
Reg. No./Substance:
0/Muscle Proteins; 0/Proteome; 63-68-3/Methionine

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