Saccharomyces cerevisiae and Aspergillus oryzae, Stimulators and Modifiers of Ruminal Fermentation and Rumen Microbial Growth Review article

Traditionally, cattle raising has been considered one of the most important sectors of agriculture as a major source of animal protein for human consumption. Accordingly, researchers in different parts of the world have worked for decades on new supplements that modulate ruminal fermentation, increase pH, and ensure the growth of cellulolytic bacteria to enhance fiber digestion and increase milk yields. The aim of this review article is to analyze the role of Saccharomyces cerevisiae and Aspergillus oryzae, as stimulators and modifiers of ruminal fermentation and rumen microbial growth. Previous research has shown that the best response to additive use in ruminants has been found in dairy cows. The effects observed have been attributed to increased ruminal cellulolysis and the flow of microbial protein into the gut