We aimed to investigate the influence of dietary vitamin E and diludine on growth and lipid peroxidation (malondialdehyde; MDA) in rainbow trout. Fish (1.5 g) were fed different dietary levels of vitamin E (0, 50 and 100 mg/kg) and diludine (0, 0.5 and 1 g/kg) for 10 weeks. Growth performance and feed conversion ratio (FCR) were significantly affected by dietary vitamin E (p < .05) but not diludine. Fish fed 50 mg/kg dietary vitamin E with no diludine had significantly better growth and lower FCR than those fed vitamin E free diets. Liver vitamin E content was significantly influenced by dietary vitamin E and diludine (p < .05). The highest hepatic vitamin E was in fish fed the highest dietary vitamin E and diludine levels. Hepatic MDA level was significantly affected by dietary vitamin E and diludine (p < .05), decreasing with the increase in both dietary vitamin E and diludine. According to our results, diludine had no significant effect on growth; however, decreased hepatic lipid peroxidation independent of vitamin E. Our results reveal that 50 mg/kg vitamin E content is suitable for optimal growth and FCR in rainbow trout juveniles. However, dose dependent effects of dietary diludine remain uncertain and need further researches.

中文翻译：

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日粮维生素 E（DL-α-生育酚乙酸酯）和二碘（1,4-二氢-2,6-二甲基-3,5-吡啶二甲酸二乙酯）水平对虹鳟鱼生长和脂质过氧化的影响，Oncorhynchus mykiss

我们的目的是研究膳食维生素 E 和二氯丁二烯对虹鳟鱼生长和脂质过氧化（丙二醛；MDA）的影响。鱼（1.5 克）被饲喂不同膳食水平的维生素 E（0、50 和 100 毫克/千克）和二碘胺（0、0.5 和 1 克/千克），持续 10 周。生长性能和饲料转化率 (FCR) 受日粮维生素 E 的显着影响 ( p  < .05)，但不受 diludine 的影响。饲喂 50 mg/kg 日粮维生素 E 且不含 diludine 的鱼比饲喂无维生素 E 日粮的鱼具有明显更好的生长和更低的 FCR。肝脏维生素 E 含量受膳食维生素 E 和稀释剂的显着影响（p < .05）。最高的肝脏维生素 E 是喂食最高膳食维生素 E 和稀释水平的鱼。肝脏 MDA 水平受膳食维生素 E 和稀释剂的显着影响 ( p  < .05)，随着膳食维生素 E 和稀释剂的增加而降低。根据我们的结果，diludine 对生长没有显着影响；然而，肝脏脂质过氧化降低与维生素 E 无关。我们的结果表明，50 mg/kg 的维生素 E 含量适合虹鳟鱼幼鱼的最佳生长和 FCR。然而，膳食diludine 的剂量依赖性效应仍不确定，需要进一步研究。