Dietary Nanometer Selenium Enhances the Selenium Accumulation, Nutrient Composition and Antioxidant Status of Paramisgurnus dabryanus spp.

IF 2.1 3区 农林科学 Q2 FISHERIES Fishes Pub Date : 2024-01-08 DOI:10.3390/fishes9010028
Jianhua Chen, Shaopeng Xing, Haixin Xu, Honggeng Zhu, Huiyun Fu, Haihua Wang, Fugui Li, Ming Zhu
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Abstract

Selenium, an essential trace element, exerts beneficial effects on aquatic animals when present in suitable concentrations. This study investigates the effect of dietary nanometer selenium (Nano-Se) on the muscle selenium accumulation, nutrient composition, and antioxidant ability of Paramisgurnus dabryanus spp. Nano-Se was supplemented in the basal diets at levels of 0, 0.1, 0.2, 0.4, and 0.6 mg/kg. Three hundred fish, averaging 5.21 ± 0.06 g, were randomly divided into five groups and fed the experimental diet for 6 weeks. Fish with a dietary Nano-Se supplement of 0.2 mg/kg exhibited activities of SOD, GSH-Px, AKP, and CAT in the liver, which were significantly higher (p < 0.05) compared to the control diet, while MDA content was significantly lower (p < 0.05) in the 0.2 mg/kg group. The muscle selenium content significantly increased (p < 0.05) at ≥0.2 mg/kg Nano-Se levels. The highest levels of essential amino acids, EAA/TAA, and EAA/NEAA ratios were observed in fish fed 0.2 mg of Nano-Se. Thus, this study recommends incorporating 0.2 mg of Nano-Se per kg in the diet to enhance antioxidant defense, selenium content, and nutrient composition.
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膳食纳米硒可提高大鲵硒的积累、营养成分和抗氧化状态
硒是一种人体必需的微量元素,如果含量适宜,会对水生动物产生有益的影响。本研究探讨了膳食中添加纳米硒(Nano-Se)对大鳞鲃(Paramisgurnus dabryanus)的肌肉硒积累、营养成分和抗氧化能力的影响。将平均体重为 5.21 ± 0.06 克的 300 尾鱼随机分为五组,喂食实验日粮 6 周。与对照组相比,膳食中添加 0.2 mg/kg 纳米硒的鱼肝脏中 SOD、GSH-Px、AKP 和 CAT 的活性显著提高(p < 0.05),而 0.2 mg/kg 组的 MDA 含量显著降低(p < 0.05)。硒含量≥0.2 毫克/千克纳米硒时,肌肉中的硒含量明显增加(p < 0.05)。在喂食 0.2 毫克纳米硒的鱼类中,观察到必需氨基酸、EAA/TAA 和 EAA/NEAA 比率水平最高。因此,本研究建议在日粮中添加每公斤 0.2 毫克的纳米硒,以提高抗氧化防御能力、硒含量和营养成分。
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来源期刊
Fishes
Fishes Multiple-
CiteScore
1.90
自引率
8.70%
发文量
311
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