The present invention relates to a method for enhancing the health of an animal comprising administering to the animal a composition comprising Bacillus subtilis QST 713 or a mutant thereof.本發明關於用於增進動物健康之方法,其包含投服給動物包含枯草芽孢桿菌(Bacillus subtilis) QST713或彼之突變株的組成物。