[Objective] To study effects of Chinese herbal additive on immunologic functions and productive performance of dairy cows.[Method] A total of 20 healthy dairy cows were randomly divided into control group and experimental group.They were respectively fed a common basal diet and the basal diet containing 100 g Chinese herbal additives.The trial lasted for 49 d.[Result] The 4% fat corrected milk yield(FCM) production,milk yield after weight correction,quantity of solid-not-fat and ash content in the experimental group were significantly higher than those in the control group(P < 0.01).The total lymphocytes(LYM) number of peripheral blood,the percentage of lymphocytes,and IgG concentration in the experimental group were significantly higher than those in the control group on Day 14,28 and 42(P < 0.01).[Conclusion] The Chinese herbal additive can enhance the lactation performance and immunologic function of dairy cows.
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