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This article explores add different doses of beta-glucan aligned mouth Schizothorax the fish growth and the impact of the non-specific immune function. Choose a healthy average weight (67.97 ± 6.99) the g Sarkozy mouth Schizothorax 450, including 18 as before the test sample, and the remaining 432 were randomly divided into 6 groups (n = 6), each repeated 12 respectively feeding ADD 0,250,500,1000,2000 and 4000mg/kg of β-glucan bait. In 14,28,42,56 d test sampling, determination of the relative growth rate, relative fatness index of the liver and pancreas, intestine length index, sausage index; index of head kidney, spleen somatic index; blood leukocyte phagocytosis rate and phagocytic index, phagocytic rate of red blood cells and phagocytic index of NBT-positive cells, plasma lysozyme activity, plasma complement C 3 and IgM levels, intestinal SIgA content; the end of the trial, each group was calculated survival, protein efficiency and feed conversion rates. The results show that: (1) the end of the trial, 500 and 1000mg/kg dose group FCR reduced efficiency of protein utilization. Section 56d 500mg/kg dose group relative growth rate significantly higher than that in the control group (P <0.05) in 2000 and 4000mg/kg dose group was significantly lower than the control group (P <0.05). 1000mg/kg dose group relative fatness index of the liver and pancreas, intestine somatic index was significantly higher than that in the control group (P <0.05). (2) 28d to 56d, the 1000mg/kg dose group head kidney index, spleen somatic index was significantly higher than that in the control group (P <0.05). 14d to 56d, 500,1000 mg / kg dose group blood phagocytic rate and phagocytic index, phagocytic rate of red blood cells and phagocytic index, NBT positive cells were significantly higher than those in the control group (P <0.05), 14d, 2000mg / leucocyte phagocytosis kg dose group, red blood cell phagocytic rate and phagocytic index, NBT positive cells was significantly higher than that of the control group, but the 56d when the control group, there was no significant difference (P> 0.05). 56d, the the 4000mg/kg dose group of leucocyte phagocytosis, red blood cell phagocytic rate and phagocytic index was significantly lower than the control group (P <0.05). 14d, 1000,2000,4000 mg / kg dose group plasma lysozyme activity was significantly higher than that in the control group (P <0.05); 28 days, 1000, 2000 mg / kg dose group plasma lysozyme activity was significantly higher than that in the control group (P <0.05 ); Section 42d, 500, 1000, 2000 mg / kg dose group, plasma lysozyme activity was significantly higher than that in the control group (P <0.05). 14d to 56d, each add plasma complement C 3 content were significantly higher than those in the control group (P <0.05). 14d, each add group plasma IgM levels were very significantly higher than that in the control group (P <0.01); 42d and 56d, plasma IgM levels of 500mg/kg dose group was significantly higher than that of the control group (P <0.01), 2000,4000 mg / kg dose group was very significantly lower than the control group (P <0.01); to section 56d the 1000mg/kg dose group compared with the control group, the content of intestinal SIgA significant increase (P <0.05). Therefore: (1) add 500mg/kgβ- glucan can promote Qi mouth Schizothorax the fish growth; (2) Add of 500 and 1000mg/kgβ- glucan enhanced Qi mouth Schizothorax the fish the immune function; (3 immune function declines) add high doses of beta-glucan (2000,4000 mg / kg) in the short term (14d and 28d) has a role in enhancing immune function, but with prolonged duration (# 42,56 d) while also to inhibit homogeneous to mouth Schizothorax growth. (4) 500 ~ 1000mg/kg as the recommended amount of β-glucan applications on the Qi mouth Schizothorax the fish.
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