Astragalus polysaccharide is the most content of Radix Astragali.It has strong immune activity.Astragalus polysaccharide has various physiology function such as enhance immunity,antivirusanticancer,antioxidation,anti-aging and so on.It can impact the immune organs development of thymus,spleen,bursa of fabricius,promote transformation and proliferation of lymphocyte,phagocytosis of phagocytic cell,enhance cellular immunity and humoral immunity of animal organism.It can increase the average body weight,feed-m...