Effects of dietary Chinese herbal medicine Scutellaria baicalensis Georgi on growth performance,serum and liver biochemical indices and liver histology of channel catfish(Ictalurus punctatus)
Effects of dietary Chinese herbal medicine Scutellaria baicalensis Georgi on growth performance,serum and liver biochemical indices and liver histology of channel catfish(Ictalurus punctatus)
In order to investigate the effects of dietary Chinese herbal medicine(Scutellaria baicalensis Georgi)on growth performance,antioxidant and non-specific immunity capacity of channel catfish Ictalurus punctatus,juvenile channel catfish with body weight of(4.68±0.02)g were reared in net cages of each 1.0 m× 1.0 m× 1.2 m and fed isonitrogen and isolipid basic diet containing 0(control group),5,10 and 15 g/kg S.baicalensis for 60 days with 3 replicates per group and 30 individuals per replicate.Then the growth performance,serum non-specific immune capacity and antioxidant capacity in liver were determined,and the histological structure was observed in the liver of the channel catfish.The results showed that there were increase in final body weight,weight gain rate and specif-ic growth rate in 5 g/kg and 10 g/kg Chinese herbal medicine groups,without significant difference(P＞0.05)compared with those in the control group.The food conversion ratio,however,was found to be significantly de-creased by the supplementation of 10 g/kg Chinese herbal medicine(P＜0.05).The supplementation of 5 g/kg and 10 g/kg Chinese herbal medicine led to significantly increase the levels of lysozyme acid phosphatase,total protein in serum and the levels of total antioxidant capacity,catalase,and superoxide dismutase in liver(P＜0.05),and to decrease the levels of alanine aminotransferase,aspartate aminotransferase,and total cholesterol content in serum and malondialdehyde content in liver(P＜0.05),with low vacuolation rate of liver.The findings indicate that the supplementation of S.baicalensis in diets can improve the feed utilization efficiency and enhance the antioxidant ac-tivity of channel catfish,with the appropriate supplemental amount of S.baicalensis of 10 g/kg under the experimen-tal conditions.
维普
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