Impact of Crude Glycerin Supplementation on Rumen and Duodenal Microbial Populations in Forage Diets

Authors

Andrea R. McCain, University of Nebraska-LincolnFollow
Robert G. Bondurant, University of Nebraska-LincolnFollow
Melissa Jolly Jolly, University of Nebraska-LincolnFollow
Jana L. Harding, University of Nebraska-LincolnFollow
Samodha C. Fernando, University of Nebraska-LincolnFollow
Jim C. MacDonald, University of Nebraska-LincolnFollow

Date of this Version

2016

Citation

2016 Nebraska Beef Cattle Reports

Comments

© The Board Regents of the University of Nebraska. All rights reserved.

Abstract

Seven ruminally and duodenally fistulated beef steers were fed 0%, 4%, 8%, and 12% crude glycerin in forage- based diets. Rumen and duodenal samples were used to determine the effects of crude glycerin on the prevalence of five selected species of ruminal bacteria. In the rumen, Anaerovibrio lipolytica and Selenomonas ruminantium increased while Butyrivibrio fibrosolvens, Fibrobacter succinogenes, and Megasphaera elsdenii were unaffected. In the duodenum, A. lipolytica, S. ruminantium, and B. fibrosolvens increased while F. succinogenes and M. elsdenii were unaffected. Changes in the relative abundance of microbial species may help explain animal performance responses to crude glycerin.