Cultron Pro is the autolyzed yeast (Saccharomyces cerevisiae) special for ruminants reported as protein source with high bioavailability of cellular metabolites, MOS and β-Glucans. The selection of yeast with greater wall thickness enables a higher rumen bypass (helping pathogens control in the gut) and its components stimulate the ruminal fermentative process. Cultron Pro can also be an important ingredient for milk-replacer formulation, assisting calves’ growth and gut integrity during this initial phase. Cultron Pro is the balanced protein ingredient in the ruminant formulation.