This review summarized the influence of DFM on health and performance of ruminant animals,moreover,information on underlying mechanisms was discussed.

• 直接饲喂微生物(DFM)能提高育肥牛日增重和饲料利用率,提高奶牛泌乳量,改善幼龄反刍动物的健康状况和生产成绩。