BetaACTIVE gives ImmunoWall® a synergistic proportion, active and pure link between β-glucans and mannan oligosaccharides. These combined immunonutrients reflected in the high efficiency of interaction with cells of the innate imune system, in the modulation of intestinal microbiota, and the prevention of colonization by gram-negative bacteria, thus favoring maintenance of intestinal permeability and integrity in the animals.