Document Detail


Effects of dietary protein under high ambient temperature on body weight, breast meat yield, and abdominal fat deposition of broiler stocks differing in growth rate and fatness.
MedLine Citation:
PMID:  7644426     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The effect of dietary protein on growth, feed intake and efficiency, abdominal fat deposition, and breast meat yield was investigated in broiler males from a commercial stock (WI) and from experimental stocks selected for low (LF) or high (HF) abdominal fat. All birds were kept at constant high ambient temperature (32 C) and were provided with low- (LP) or high-protein (HP) diets from hatch until 8 wk of age (Experiment 1) or from 4 to 8 wk of age (Experiment 2). In both experiments, HP diet significantly increased 4- to 8-wk BW gain in the LF and HF stocks but reduced it in the WI stock as compared with the LP diet. Abdominal fat, as percentage of BW, was almost twofold higher in the HF birds than in the LF ones, with WI mean being intermediate. In contrast to the HF and WI birds, in which abdominal fat decreased with increased protein intake, abdominal fat was not affected by dietary protein in the LF stock. The HP diet substantially increased breast meat yield in LF birds but not in the WI birds, with HF birds exhibiting intermediate increase in breast meat weight. It was concluded that birds of varied inherent growth rate and tendencies toward protein and fat deposition respond differently to dietary protein level under heat stress.
Authors:
A Cahaner; Y Pinchasov; I Nir; Z Nitsan
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Poultry science     Volume:  74     ISSN:  0032-5791     ISO Abbreviation:  Poult. Sci.     Publication Date:  1995 Jun 
Date Detail:
Created Date:  1995-09-21     Completed Date:  1995-09-21     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0401150     Medline TA:  Poult Sci     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  968-75     Citation Subset:  IM    
Affiliation:
Department of Genetics, Hebrew University of Jerusalem, Faculty of Agriculture, Rehovot, Israel.
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MeSH Terms
Descriptor/Qualifier:
Adipose Tissue / growth & development
Animal Feed*
Animals
Body Weight
Chickens / growth & development*
Crosses, Genetic
Dietary Proteins*
Female
Male
Meat
Muscle Development
Muscle, Skeletal / growth & development
Species Specificity
Temperature
Weight Gain / genetics*
Chemical
Reg. No./Substance:
0/Dietary Proteins

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


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