TY - JOUR T1 - The effect of soybean lecithin on immunity and some biochemical indices of Salmo trutta caspius TT - بررسی اثر لسیتین سویا بر برخی شاخص های ایمنی و بیوشیمی خون پیش مولدین ماهی آزاد دریای خزر (Salmo trutta caspius) JF - JOC JO - JOC VL - 9 IS - 34 UR - http://joc.inio.ac.ir/article-1-1204-en.html Y1 - 2018 SP - 29 EP - 37 KW - Lecithin KW - Immunity KW - Blood Biochemistry KW - Salmo trutt caspius N2 - The present study was to evaluate the effect of soybean lecithin on some immunological parameters (Lysozyme, ACH50 and Total antibody), hematological and serological parameters, and liver antioxidant enzymes activity of Salmo trutta caspius. For this purpose, 90 fish (350g ± 10) were randomly divided into three treatments with three respective replicates. The first group (control) was fed only with commercial feed, while the second group was fed with diet supplemented with 12% soybean oil, and the third one received feed supplemented with 6% soybean oil and 6% soybean lecithin for 90 days. In treatments 2 and 3, immunological, glutathione S transferase and superoxide dismutase activities and some biochemical parameters (LDL, HDL and Cholesterol), except VLDL and triglyceride, were significantly higher than in the control treatment (P<0.05). VLDL of treatment 1 was significantly higher than that of treatments 2 and 3 (those fish received soybean oil and/or lecithin). Hematological indices of treatment 2 including RBC, Hb and Hct, and Hct and WBC of treatment 3 were significantly different from treatment 1 (P<0.05). In conclusion, addition of 6% soybean lecithin as a supplementary feed to the diet of Caspian Sea salmon (Salmo trutt caspius) is suggested due to its ameliorative effects on physiological indices. M3 10.29252/joc.9.34.29 ER -