Strategies to reduce ruminal acidosis by using microorganism

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Vatsana Sirisan


Ruminal acidosis has negative affect on animal production, animal health and economic loss. Therefore, the objective of this article was to review the researches about the use of microbial probiotics to reduce ruminal acidosis. The direct fed microbial are widely used for substitution antibiotic treatment. The bacteria direct fed are composted of Megasphera elsdenii, Propionibacteriam and Prevotella. All of them are used lactic acid to produce propionic acid. Moreover, yeast has more tolerance acid load than other micro-organism. It has reduced lactic acid load in terms of direct and indirect method. The indirect method; Saccharomyces cerevisiae was promoted the M. elsdenii and S. ruminantium to uptake lactic acid. In addition it was activated the Entodiniomorphs protozoal to engulf starch granules; hence reduce the substrate to produce lactic acid by Streptococcus bovis. The mode of action of yeast to reduce lactic acid loads in terms of non-direct was examined the growth rate of yeast in lactic. Especially, the yeast Candida rugose was isolated form ruminal fluid of dairy cow fed high concentrate diet has high specific growth rate for lactic acid as sole carbon source. Therefore, microbial probotic is the alternative method to relieve ruminal lactic acidosis for substitution antibiotic treatment.


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Sirisan, V. (2017). Strategies to reduce ruminal acidosis by using microorganism. Veterinary Integrative Sciences, 15(1), 51–62. Retrieved from
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