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Dietary copper affects antioxidant status of shrimp (Penaeus monodon) reared in low salinity water

文献类型： 外文期刊

作者： Guo, Hui 1 ; Xian, Jian-An 2 ; Zheng, Pei-Hua 2 ; Lu, Yao-Peng 2 ; Wang, Lei 3 ; Zhang, Xiu-Xia 2 ; Li, Jun-Tao 2 ; Zhang, Ze-Long 2 ; Wang, An-Li 3 ;

作者机构： 1.Guangdong Ocean Univ, Coll Fisheries, Guangdong South China Sea Key Lab Aquaculture Aqu, Zhanjiang 524025, Peoples R China

2.CATAS, Hainan Prov Key Lab Funct Components Res & Utiliz, Inst Trop Biosci & Biotechnol, Haikou 571101, Hainan, Peoples R China

3.South China Normal Univ, Sch Life Sci, Inst Modern Aquaculture Sci & Engn IMASE,Key Lab, Guangdong Prov Key Lab Hlth & Safe Aquaculture,Gu, Guangzhou 510631, Peoples R China

4.CATAS, Hainan Acad Trop Agr Resource, Haikou 571101, Hainan, Peoples R China

关键词： Copper; Diet; Antioxidant status; Penaeus monodon; Low salinity

期刊名称：AQUACULTURE REPORTS （ 影响因子：3.385； 五年影响因子：3.645 ）

ISSN： 2352-5134

年卷期： 2022 年 22 卷

页码：

收录情况： SCI

摘要： Graded levels of supplemental copper (Cu) (0, 10, 25, 40, 55 and 110 mg/kg) were fed to juvenile tiger shrimp (Penaeus monodon) reared in 5 parts per thousand salinity water for 8 weeks. According to the results, shrimps fed a diet supplemented with 40 mg/kg Cu had the highest weight gain (WG). Shrimps fed a diet with 110 mg/kg supplemental Cu had the lowest total haemocyte count (THC) and the highest reactive oxygen species (ROS) production and apoptotic ratio in haemocytes, suggesting that excessive levels of dietary Cu caused oxidative stress and induced haemocyte apoptosis. In plasma, the activities of copper, zinc-superoxide dismutase (Cu, Zn-SOD) and total superoxide dismutase (T-SOD) were higher in shrimps fed diets with 40 and 55 mg/kg supplemental Cu than those fed diets with <= 25 and 110 mg/kg supplemental Cu. Hepatic Cu, Zn-SOD activity increased in shrimps fed diets with 25-55 mg/kg supplemental Cu, while hepatic T-SOD activity increased in shrimps fed diets with 40 and 55 mg/kg supplemental Cu. In addition, diets with 25-55 mg/kg supplemental Cu increased the plasma total antioxidant capacity (T-AOC), while diets with 10-55 mg/kg supplemental Cu increased the hepatic T-AOC. Hepatic malondialdehyde (MDA) content was lowest in shrimps fed diets with 25 and 40 mg/kg supplemental Cu and highest in shrimps fed a diet with 110 mg/kg. Based on the growth and antioxidant activities, the optimum requirement of Cu for the antioxidant status of P. monodon was 30.7-61.9 mg/kg.

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