Document Detail


Changes over time in the bacterial communities associated with fluid and food particles and the ruminal parameters in the bovine rumen before and after a dietary change.
MedLine Citation:
PMID:  21823898     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
This work aimed to study the changes over time in the bacterial communities associated with the fluid and food particle fractions of the cow rumen following a change in diet. Four cannulated cows were fed a hay-based diet for 21 days and were then switched to a corn-silage-based diet for 33 days. The bacterial communities were regularly characterized by capillary electrophoresis - single-strand conformation polymorphism (CE-SSCP) and qPCR, and the main ruminal parameters were determined. The dietary change led to slight reductions in the diversity index, bacterial concentration, pH, and NH(3)-N concentration, and to an increase in the redox potential and volatile fatty acid concentrations. CE-SSCP profiles were not significantly affected by the dietary change but did change over time, with frequent fluctuations in both fluid and food particle fractions before and after the dietary change. The food particle fraction had a higher diversity index of bacterial community (+1.2 points, P < 0.001) and slightly more total bacteria than the fluid fraction of the rumen.
Authors:
R J Michelland; V Monteils; S Combes; L Cauquil; T Gidenne; L Fortun-Lamothe
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-8-8
Journal Detail:
Title:  Canadian journal of microbiology     Volume:  -     ISSN:  1480-3275     ISO Abbreviation:  -     Publication Date:  2011 Aug 
Date Detail:
Created Date:  2011-8-9     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0372707     Medline TA:  Can J Microbiol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
a Institut national de recherche agronomique (INRA), Unité mixte de recherche (UMR) 1289 TANDEM (Tissus Animaux, Nutrition, Digestion, Ecosystème et métabolisme), F-31326 Castanet-Tolosan, France.
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