The present invention relates to formulations for animal feed comprising coated granules comprising butyrate salt the butyrate salt is preferably the salt of sodium or calcium salt. The coated granules have a particle size of 0.1 mm or more, preferably 0.2 mm or more and about 2 mm or less, and preferably about 1 mm or less. The coated granules comprise a binder and a coating. Further, the butyrate salt can be combined with another active ingredient which may be chosen from the group consisting of plant extracts, prebiotic compounds, probiotics, yeast extracts, middle-length chain fatty acids, unsaturated long chain fatty acids, lactate salt, fat soluble vitamin, and toxin absorbing compound.