Document Detail

Dietary encapsulated glycine influences Clostridium perfringens and Lactobacilli growth in the gastrointestinal tract of broiler chickens.
MedLine Citation:
PMID:  17513399     Owner:  NLM     Status:  MEDLINE    
Three experiments were conducted to determine whether there is a causative relation between dietary glycine concentration and intestinal Clostridium perfringens growth in broiler chickens. Expt. 1 showed that glycine concentrations were higher (P < 0.05) in jejunum and ileum of birds fed fat-encapsulated glycine compared with crystalline glycine. In Expt. 2, 2 cages of 6 birds were assigned to 1 of 6 experimental diets formulated to contain 7.6 and 10.6, 17.8 and 40.6, 27.8 and 30.6, 37.8 and 20.6, 47.7 and 10.6, and 7.8 and 50.6 g/kg total glycine and proline, respectively, provided primarily by supplementation with encapsulated glycine or proline as required. In Expt. 3, 12 groups of 6 birds were fed 4 different diets supplemented with encapsulated glycine to achieve 7.6, 21.0, 34.3, or 47.7 g/kg total glycine. The birds were orally challenged with C. perfringens type A on d 1 and d 14-21 and killed on d 28. In Expt. 2, C. perfringens populations were higher (P < 0.05) in ileum and cecum of birds, which received either 37.8 or 47.7 g/kg total glycine compared with those fed 7.6 g/kg glycine. In Expt. 3, C. perfringens numbers were higher (P < 0.05) in ileum of birds fed either 34.3 or 47.7 g/kg dietary glycine than those given either 7.6 or 21.0 g/kg glycine. Conversely, lactobacilli counts in ileum and cecum were significantly lower in birds fed the higher levels of glycine in both experiments. High C. perfringens colonization and high intestinal lesion scores were associated with reduced performance (P < 0.05). We conclude that glycine is an important determinant of C. perfringens growth in the intestinal tract of broiler chickens.
J P Dahiya; Dirk Hoehler; Andrew G Van Kessel; Murray D Drew
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The Journal of nutrition     Volume:  137     ISSN:  0022-3166     ISO Abbreviation:  J. Nutr.     Publication Date:  2007 Jun 
Date Detail:
Created Date:  2007-05-21     Completed Date:  2007-06-21     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0404243     Medline TA:  J Nutr     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1408-14     Citation Subset:  IM    
Department of Animal and Poultry Science, University of Saskatchewan, Saskatoon, Saskatchewan, Canada.
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MeSH Terms
Clostridium perfringens / drug effects*,  growth & development
Food, Formulated
Glycine / administration & dosage,  pharmacology*
Intestines / drug effects*,  microbiology
Lactobacillus / drug effects*,  growth & development
Proline / administration & dosage,  pharmacology*
Reg. No./Substance:
147-85-3/Proline; 56-40-6/Glycine

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

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