These results suggest that SFP may be used as an auxiliary hypoglycemic substance for metformin in the future. Dietary Enteromorpha Polysaccharide Enhances Intestinal Immune Response, Integrity, and Caecal Microbial Activity of Broiler Chickens. Marine algae polyoses have been readed to regulate various biological activenessses, such as immune modulation, antioxidant, antidiabetic,