饲料中添加姜黄素对大菱鲆幼鱼生长、体组成及抗氧化酶活力的影响

为研究饲料中添加姜黄素对大菱鲆幼鱼生长、体组成及血清抗氧化酶活力的影响,在饲料中分别添加0、0.02%、0.04%和0.06%的姜黄素,配制成4种等氮等脂的实验饲料。选择初始体质量(5.12±0.04)g大菱鲆幼鱼420尾,随机分成4组,每组3个重复,每个重复35尾鱼。每种饲料随机饲喂1组实验鱼,养殖周期为77 d。结果显示,饲料中添加姜黄素对大菱鲆幼鱼的成活率(SR)、特定生长率(SGR)、摄食量(FI)、肝体比(HSI)和脏体比(VSI)没有显著影响。饲料中添加姜黄素对鱼体水分含量无显著影响;饲料中添加姜黄素后,鱼体脂肪含量显著下降,而肝脏和肌肉脂肪含量则呈显著上升趋势;0.02%和0.06%姜黄素添加组鱼体蛋白质含量显著高于0.04%组。0.06%姜黄素添加组的血清超氧化物歧化酶(SOD)活力显著高于其他组;姜黄素添加组的血清过氧化氢酶(CAT)活力高于对照组,但各组间差异不显著;饲料中添加姜黄素后,血清丙二醛(MDA)含量和谷胱甘肽酶(GSH)活力呈显著降低的趋势。研究表明,饲料中添加姜黄素对大菱鲆幼鱼成活和生长无显著影响,但能够显著提高幼鱼的血清抗氧化能力。

Effects of dietary curcumin on growth performance, body composition and serum antioxidant enzyme activity in juvenile turbot (Scophthalmus maximus)

A 77-d feeding trial was conducted to evaluate the effects of dietary curcumin on growth performance, body composition and serum antioxidant enzyme activity in junvenile turbot (Scophthalmus maximus)initial body weight (5.12±0.04) g]. Four isonitrogenous and isoenergetic practical diets (50.66% protein, 17.36% lipid) were formulated to contain graded levels (0, 0.02%, 0.04% and 0.06% dry weight) of curcumin. Each diet was randomly assigned to triplicate groups of 35 fish and the fish were fed twice daily to apparent satiation. The results showed that survival rate (SR), specific growth rate (SGR), feed intake (FI), hepatosomatic index (HSI) and viserosomatic index (VSI) were not significantly affected by the dietary curcumin levels. There were no significant differences observed in whole body moisture content among all treatments. Lipid content in whole body significantly decreased, while lipid content in liver and muscle significantly increased with increasing dietary curcumin levels. Fish fed diet with 0.04% curcumin showed lower protein content in whole body than other groups. The activity of serum SOD increased with increasing dietary curcumin levels, and fish fed diet with 0.06% curcumin had significantly higher value than the control group. The activity of serum CAT was opposite to the trend of serum SOD activity, and the group fed diet with 0.06% curcumin had higher value than the control group. The serum MDA content and GSH content were significantly decreased with increasing dietary curcumin levels. In conclusion, the results from the present study indicated that 0.06% dietary curcumin improved the serum anti-oxidation ability of juvenile turbot, but did not affect the growth of fish.