Document Detail

Establishment of cellulolytic bacteria and development of fermentative activities in the rumen of gnotobiotically-reared lambs receiving the microbial additive Saccharomyces cerevisiae CNCM I-1077.
MedLine Citation:
PMID:  11368245     Owner:  NLM     Status:  MEDLINE    
We studied the effects of a yeast additive used in ruminant nutrition on the establishment of cellulolytic bacteria, on plant cell wall degradation and on digestive functions in the rumen of gnotobiotically-reared lambs. Cellulolytic bacteria inoculated to the lambs tended to become established earlier in the presence of Saccharomyces cerevisiae CNCM I-1077 (SC). In addition, their population was maintained at a higher level, when the physico-chemical conditions of the biotope were altered. In these lambs, specific activities of fibrolytic enzymes were greater, and in sacco degradation of wheat straw tended to increase. In the presence of SC there was a decrease in ruminal ammonia concentration and a higher volatile fatty acid (VFA) concentration when lambs were 20 to 50 days old. These data suggest that this yeast strain may stimulate the development of cellulolytic microflora and enhance microbial activity in the rumen of young ruminants. Such activity could be beneficial in preventing microbial imbalance and a reduction of rumen function efficiency in the case of nutritional transitions. Further studies with conventional animals will soon be performed in order to verify these dings.
F Chaucheyras-Durand; G Fonty
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Reproduction, nutrition, development     Volume:  41     ISSN:  0926-5287     ISO Abbreviation:  Reprod. Nutr. Dev.     Publication Date:    2001 Jan-Feb
Date Detail:
Created Date:  2001-05-22     Completed Date:  2001-06-14     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  8913069     Medline TA:  Reprod Nutr Dev     Country:  France    
Other Details:
Languages:  eng     Pagination:  57-68     Citation Subset:  IM    
Laboratoire de Microbiologie, INRA, Centre de Recherches de Clermont-Ferrand Theix, Saint-Genès-Champanelle, France.
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MeSH Terms
Ammonia / analysis
Bacterial Physiological Phenomena*
Cell Wall / metabolism*
Cellulose / metabolism
Fatty Acids, Volatile / analysis
Germ-Free Life
Rumen / chemistry,  microbiology*
Saccharomyces cerevisiae / metabolism*
Triticum / metabolism
Reg. No./Substance:
0/Fatty Acids, Volatile; 7664-41-7/Ammonia; 9004-34-6/Cellulose

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

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