Skip Navigation
Skip to contents

Journal of Microbiology : Journal of Microbiology

OPEN ACCESS
SEARCH
Search
Advanced Search
mobile menu button

Articles

Page Path
HOME > J. Microbiol > Volume 49(2); 2011 > Article
Journal Article
The Effect of Lipid Supplements on Ruminal Bacteria in Continuous Culture Fermenters Varies with the Fatty Acid Composition
Ramesh B. Potu 1, Amer A. AbuGhazaleh 1, Darcie Hastings 1, Karen Jones 1, Salam A. Ibrahim 2
Journal of Microbiology 2011;49(2):216-223.
DOI: https://doi.org/10.1007/s12275-011-0365-1
Published online: May 3, 2011
1Department of Animal Science, Food and Nutrition, Southern Illinois University Carbondale, IL 62901, USA, 2Department of Human, Environment and Family Sciences, North Carolina A&T State University, Greensboro, NC 27411, USA
Corresponding author:  Amer A. AbuGhazaleh , Tel: +1-618-453-1767, 
Received: 10 September 2010   • Accepted: 22 December 2010
prev next
  • 164 Views
  • 0 Download
  • 38 Crossref
  • 43 Scopus
Full Article

Download PDF Download PDF

Abstract

A single flow continuous culture fermenter system was used in this study to investigate the influence of dietary lipid supplements varying in their fatty acid content on the DNA concentration of selected rumen bacteria. Four continuous culture fermenters were used in a 4×4 Latin square design with four periods of 10 d each. Treatment diets were fed at 45 g/d (DM basis) in three equal portions during the day. The diets were: 1) control (CON), 2) control with animal fat source (SAT), 3) control with soybean oil (SBO), and 4) control with fish oil (FO). Lipid supplements were added at 3% of diet DM. The concentrations of total volatile fatty acids and acetate were not affected (P>0.05) by lipid supplements. Concentrations of propionate, iso-butyrate, valerate and iso-valerate were highest (P<0.05) with the FO diet compared with the other treatment diets. The concentration of t11 C18:1 (vaccenic acid, VA) in effluents increased (P<0.05) with SBO and FO diets and was highest with the SBO diet. The concentrations of C18:0 in effluents were lowest (P<0.05) for the FO diet compared with the other treatment diets. Concentrations of DNA for Anaerovibrio lipolytica, and Butyrivibrio proteoclasticus in fermenters were similar (P>0.05) for all diets. The DNA concentrations of Butyrivibrio fibrisolvens and Ruminococcus albus in fermenters were lowest (P<0.05) with the FO diet but were similar (P>0.05) among the other treatment diets. Selenomonas ruminantium DNA concentration in fermenters was highest (P<0.05) with the FO diet. In conclusion, SBO had no effect on bacterial DNA concentrations tested in this study and the VA accumulation in the rumen observed on the FO diet may be due in part to FO influence on B. fibrisolvens, R. albus, and S. ruminantium.

  • Cite this Article
    Cite this Article
    export Copy Download
    Close
    Download Citation
    Download a citation file in RIS format that can be imported by all major citation management software, including EndNote, ProCite, RefWorks, and Reference Manager.
    Format:
    • RIS — For EndNote, ProCite, RefWorks, and most other reference management software
    • BibTeX — For JabRef, BibDesk, and other BibTeX-specific software
    Include:
    • Citation for the content below
    The Effect of Lipid Supplements on Ruminal Bacteria in Continuous Culture Fermenters Varies with the Fatty Acid Composition
    J. Microbiol. 2011;49(2):216-223.   Published online May 3, 2011
    DOI: https://doi.org/10.1007/s12275-011-0365-1
    Close
Related articles
Journal of Microbiology : Journal of Microbiology
© The Microbiological Society of Korea.
TOP