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Dietary selenium enhances the growth and anti-oxidant capacity of juvenile blunt snout bream (Megalobrama amblycephala).
Fish & Shellfish Immunology ( IF 4.1 ) Pub Date : 2020-03-24 , DOI: 10.1016/j.fsi.2020.03.041
Hao Jingyuan 1 , Lin Yan 2 , Pan Wenjing 2 , Jiang Wenqiang 1 , Liu Bo 3 , Miao Linghong 2 , Zhou Qunlang 3 , Liang Hualiang 2 , Ge Xianping 3
Affiliation  

Sodium selenite was added to basal diet at five levels (0.10, 0.42, 0.67, 1.06 and 1.46 mg Se/kg) and fed fish for 8 weeks. The dietary selenium requirement of juvenile blunt snout bream (Megalobrama amblycephala) was quantified. Dietaryseleniums at 0.67-1.06 mg Se/kg improved weight gain rate, specific growth rate and feed efficiency. The optimal amount was 0.96 mg/kg, for which the specific growth rate was 1.798%/day and the weight gain rate was 173.852% (p < 0.05). Se deposition in muscle was increased (p < 0.05) at ≥0.67 mg/kg, but moisture, protein, lipid and ash content were not affected. Physiological status and lipid metabolism were improved by 1.06-1.46 mg/kg dietary selenium based on total protein and albumin in plasma, and total cholesterol and triglycerides (p < 0.05). Activities of hepatic anti-oxidant enzymes catalase, total superoxide dismutase, glutathione peroxidase and reduced glutathione were enhanced at Se1.06 (p < 0.05). However, malondialdehyde content was lowered at Se1.06 (p < 0.05). Expression of anti-inflammatory cytokines, nuclear factor erythroid 2-related factor 2 (Nrf2) and kelch-like ECH-associated protein 1 (Keap-1) in liver were elevated at Se1.06 (p < 0.05), as were mRNA levels of glutathione peroxidase, copper zinc superoxide dismutase and catalase. Expression of pro-inflammatory cytokines, interleukin 8, tumour necrosis factor-α and transforming growth factor-β were inhibited at 0.67-1.46 mg/kg (p < 0.05). In general, 0.96 mg/kg was optimal, and optimal selenium enhanced antioxidant stress tolerance and anti-inflammatory ability.

中文翻译:

膳食硒增强了少年钝嘴鲷(Megalobrama amblycephala)的生长和抗氧化能力。

将亚硒酸钠以五种水平(0.10、0.42、0.67、1.06和1.46 mg Se / kg)添加到基础饮食中,并喂鱼8周。定量了少年钝嘴鲷(Megalobrama amblycephala)的饮食硒需求量。硒含量为0.67-1.06 mg / kg的膳食硒改善了增重率,比生长率和饲料效率。最适量为0.96 mg / kg,比生长率为1.798%/天,增重率为173.852%(p <0.05)。≥0.67 mg / kg时,肌肉中的硒沉积增加(p <0.05),但水分,蛋白质,脂质和灰分含量未受影响。基于血浆中的总蛋白和白蛋白以及总胆固醇和甘油三酸酯,日粮硒的生理状态和脂质代谢改善了1.06-1.46 mg / kg(p <0.05)。肝脏抗氧化酶过氧化氢酶的活性,总的超氧化物歧化酶,谷胱甘肽过氧化物酶和还原型谷胱甘肽在Se1.06时增强(p <0.05)。但是,丙二醛含量降低到Se1.06(p <0.05)。肝脏中抗炎细胞因子,核因子类红细胞2相关因子2(Nrf2)和海藻样ECH相关蛋白1(Keap-1)的表达在Se1.06升高(p <0.05),而mRNA水平也升高谷胱甘肽过氧化物酶,铜锌超氧化物歧化酶和过氧化氢酶 促炎细胞因子,白介素8,肿瘤坏死因子-α和转化生长因子-β的表达被抑制为0.67-1.46 mg / kg(p <0.05)。通常,最适0.96 mg / kg,最适硒增强抗氧化应激耐受性和抗炎能力。0.05)。但是,丙二醛含量降低到Se1.06(p <0.05)。肝脏中抗炎细胞因子,核因子类红细胞2相关因子2(Nrf2)和海藻样ECH相关蛋白1(Keap-1)的表达在Se1.06升高(p <0.05),而mRNA水平也升高谷胱甘肽过氧化物酶,铜锌超氧化物歧化酶和过氧化氢酶 促炎细胞因子,白介素8,肿瘤坏死因子-α和转化生长因子-β的表达被抑制为0.67-1.46 mg / kg(p <0.05)。通常,最适0.96 mg / kg,最适硒增强抗氧化应激耐受性和抗炎能力。0.05)。但是,丙二醛含量降低到Se1.06(p <0.05)。肝脏中抗炎细胞因子,核因子类红细胞2相关因子2(Nrf2)和海藻样ECH相关蛋白1(Keap-1)的表达在Se1.06升高(p <0.05),而mRNA水平也升高谷胱甘肽过氧化物酶,铜锌超氧化物歧化酶和过氧化氢酶 促炎细胞因子,白介素8,肿瘤坏死因子-α和转化生长因子-β的表达被抑制为0.67-1.46 mg / kg(p <0.05)。通常,最适0.96 mg / kg,最适硒增强抗氧化应激耐受性和抗炎能力。肝脏中的核因子红系2相关因子2(Nrf2)和海藻样ECH相关蛋白1(Keap-1)在Se1.06升高(p <0.05),谷胱甘肽过氧化物酶,铜锌超氧化物酶的mRNA水平也升高歧化酶和过氧化氢酶。促炎细胞因子,白介素8,肿瘤坏死因子-α和转化生长因子-β的表达被抑制为0.67-1.46 mg / kg(p <0.05)。通常,最适0.96 mg / kg,最适硒增强抗氧化应激耐受性和抗炎能力。肝脏中的核因子红系2相关因子2(Nrf2)和海藻样ECH相关蛋白1(Keap-1)在Se1.06升高(p <0.05),谷胱甘肽过氧化物酶,铜锌超氧化物酶的mRNA水平也升高歧化酶和过氧化氢酶。促炎细胞因子,白介素8,肿瘤坏死因子-α和转化生长因子-β的表达被抑制为0.67-1.46 mg / kg(p <0.05)。通常,最适0.96 mg / kg,最适硒增强抗氧化应激耐受性和抗炎能力。
更新日期:2020-03-26
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