In this study, the effects of dietary myo-inositol on the skin mucosal immunity and growth of taimen (Hucho taimen) fry were determined. Triplicate groups of 500 fish (initial weight 5.58 ± 0.15 g) were fed different diets containing graded levels of myo-inositol (28.75, 127.83, 343.83, 565.81, and 738.15 mg kg⁻¹) until satiation for 56 days. Thereafter, the nonspecific skin mucus immune parameters, antioxidative capacity, and growth performance were measured. The skin mucus protein and the activities of alkaline phosphatase were significantly higher than those in the control group (P < 0.05). However, there were no significant differences in lysozyme activity among the treatments (P > 0.05). The antimicrobial activity and minimum inhibitory concentration of the skin mucus were increased significantly by myo-inositol supplementation (P < 0.05). The superoxide dismutase, catalase, and glutathione peroxidase activities were significantly elevated in the treatment groups (P < 0.05), whereas the malondialdehyde contents were significantly decreased (P < 0.05). Low-level myo-inositol (28.75 mg kg⁻¹) led to a significantly lower weight gain, feed efficiency, condition factor, and survival rate compared with the other treatments (P < 0.05). In conclusion, dietary myo-inositol deficiency (28.75 mg kg⁻¹) adversely affects the skin mucus immune parameters, antioxidative capacity, and growth performance of Hucho taimen fry.

在这项研究中，饮食的影响，肌肌醇对皮肤粘膜免疫和哲罗鱼（增长哲罗鱼进行了测定）鱼苗。500鱼（初始重量5.58±0.15克），一式三份组饲喂含的分级水平不同的饮食肌肌醇（28.75，127.83，343.83，565.81，738.15和公斤毫克^-1），直到饱食56天。此后，测量非特异性皮肤粘液免疫参数，抗氧化能力和生长性能。皮肤黏液蛋白和碱性磷酸酶活性明显高于对照组（P  <0.05）。然而，各处理之间溶菌酶活性没有显着差异（P > 0.05）。补充肌醇可显着提高皮肤粘液的抗菌活性和最低抑菌浓度（P  <0.05）。治疗组中的超氧化物歧化酶，过氧化氢酶和谷胱甘肽过氧化物酶活性显着升高（P  <0.05），而丙二醛含量显着降低（P  <0.05）。低水平肌醇肌醇（28.75毫克千克^-1）导致了较低显著增重，饲料效率，条件因素，和存活率与其他处理（比较P  <0.05）。总之，膳食肌肌醇缺乏症（28.75毫克千克^-1）不利地影响Hucho taimen鱼苗的皮肤粘液免疫参数，抗氧化能力和生长性能。