Document Detail


Dietary glutamine supplementation improves growth performance, meat quality and colour stability of broilers under heat stress.
MedLine Citation:
PMID:  19637033     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
1. The present study was conducted to investigate the effects of dietary glutamine (Gln) supplementation on growth performance, carcase characteristics and meat quality in broilers exposed to high ambient temperature. 2. A total of 240 35-d-old male Arbor Acres broilers were randomly assigned to 4 treatment groups (three replicates of 20 birds per cage). The broilers were kept in a temperature-controlled room at either 23 degrees C (no-stress groups, NS) or 28 degrees C (heat stress groups, HS). The broilers were fed either on a basal diet (control, NS) or on the basal diet supplemented with 0, 0.5 or 1.0% Gln (HS). 3. Compared with the NS, the HS (0% Gln) group gained less weight and consumed less feed, had lower final body weight, gain-to-feed ratio, and abdominal fat yield. Breast meat in HS (0% Gln) had lower pH, water-holding capacity (WHC), a* value, ether extract (EE) content and crude protein (CP) content, and had higher shear force (SF) and L* value. 4. Linear increase were found in groups supplemented with Gln (0, 0.5% and 1.0%) for final body weight, weight gain, feed consumption, gain-to-feed ratio and abdominal fat yield. Supplementation with Gln improved breast meat pH, WHC, SF, L* value, a* value, EE content and CP content in broilers exposed to heat stress. No significant difference was observed in all the indices determined between the HS (1% Gln) and the NS. 5. Heat stress caused obvious breast meat discoloration in L*, a* and b* values. However, dietary supplementation with Gln gave a better colour stability. 6. The results indicated that dietary supplementation with Gln may alleviate heat stress-caused deterioration in growth performance, carcase characteristics, meat quality and meat colour stability of broilers.
Authors:
S F Dai; L K Wang; A Y Wen; L X Wang; G M Jin
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  British poultry science     Volume:  50     ISSN:  1466-1799     ISO Abbreviation:  Br. Poult. Sci.     Publication Date:  2009 May 
Date Detail:
Created Date:  2009-07-28     Completed Date:  2009-10-28     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  15740290R     Medline TA:  Br Poult Sci     Country:  England    
Other Details:
Languages:  eng     Pagination:  333-40     Citation Subset:  IM    
Affiliation:
College of Animal Science, Anhui Science and Technology University, Fengyang, Anhui, P.R. China. daisifa-004@163.com
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MeSH Terms
Descriptor/Qualifier:
Animal Feed*
Animals
Chickens / growth & development
Color
Glutamine / pharmacology*
Hot Temperature*
Male
Meat / standards*
Random Allocation
Stress, Physiological
Chemical
Reg. No./Substance:
56-85-9/Glutamine

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


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