Volume 1, Issue 1, December 2017, Page: 8-14
Current View of the Significance of Yeast for Ruminants a Review 1- Role of Yeast and Modes of Action
Alsaied Alnaimy Mostafa Habeeb, Department of Biological Applications, Radioisotopes Applications Division, Nuclear Research Center, Atomic Energy Authority, Cairo, Egypt
Received: Apr. 15, 2017;       Accepted: May 22, 2017;       Published: Jul. 20, 2017
DOI: 10.11648/j.ajist.20170101.12      View  2174      Downloads  151
Abstract
A variety of mechanisms have been suggested to explain changes in the activity of the rumen and improvements in performance when ruminants are fed yeast-based (Direct-Feed Microbials) DFMs. Yeast may have a buffering effect in the rumen by mediating the sharp drops in rumen pH which follows feeding of higher concentrate rations. Yeast may help to buffer excess lactic acid production when ruminants are fed high concentrate diets. At higher pH levels when feeding yeast caused increased numbers of rumen cellulolytic (cellulose digesting) bacteria and improvements in fiber digestion. Yeast fed has been shown to stimulate the growth and activity of rumen bacteria. Some products have high numbers of live yeast with low recommended feeding rates while other products suggest that live organisms are not required for beneficial effects and that the end products (metabolites produced by the yeast cells) are the active ingredients. Both types of yeast product have been reported to produce a variety of positive effects, especially, when fed to animals on a high forage diet.
Keywords
Yeast, Mode of Action, Rumen Activity, Bacteria, Animals
To cite this article
Alsaied Alnaimy Mostafa Habeeb, Current View of the Significance of Yeast for Ruminants a Review 1- Role of Yeast and Modes of Action, American Journal of Information Science and Technology. Vol. 1, No. 1, 2017, pp. 8-14. doi: 10.11648/j.ajist.20170101.12
Copyright
Copyright © 2017 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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