Xianjiang Wen¹, Fida Noor², Hafeez Noor¹, Jianxia Wang³, Chuanming Xiao^4,

The effects of dietary supplementation of plant extract (Impim) on growth performance, immune organ indexes, serum biochemical indicators, and nutrients digestibility of broiler chickens. Nine hundred one-day-old Cobb commercial broilers were randomly allocated into 3 treatments with 3 replicates in each treatment with 100 broilers in each replicate. The 3 dietary treatments were 1) control group (CON), basal diet; 2) CON + 0.02% Impim (Impim group); 3) CON + 0.002% Colistin sulfate premix + 0.004% Aureomycin premix. The trial period were 53 days. The results showed that, compared with antibiotic group, the serum total protein, amylase activity and lipase activity of broilers fed with Impim had been significantly improved by 9.91%, 18.25% and 14.73%, respectively (P < 0.05). In addition, digestibility of Ca, P, CP and ether extraction (EE) were significantly improved by 34.10%, 24.17%, 18.88% and 18.98%, respectively (P < 0.05). Death and culling rate was decreased by 32.09% (P < 0.05), ADG was increased by 2.37% (P < 0.05), feed intake was increased by 0.32% (P < 0.05) respectively, glutamic-pyruvic transaminase (ALT) activity was increased by 2.03% (P < 0.05), and D 42 immune organ indexes was increased (P > 0.05) in broilers of Impim group than antibiotic group. It could be concluded that administration of the Impim to broilers’ diet improved chickens’ growth performance, had a potent immunomodulatory effect (potentiated immune response). Eventually, Impim could be used as a partial replacement to the antibiotics.

broilers, growth performance, immune function, plant extract