Effects of dietary Radix bupleuri root extract on the growth, muscle composition, histology, immune responses and microcystin-LR stress resistance of juvenile red claw crayfish (Cherax quadricarinatus)
文献类型： 外文期刊
作者： Lu, Yao-Peng 1 ; Zheng, Pei-Hua 1 ; Zhang, Ze-Long 1 ; Li, Jun-Tao 1 ; Li, Jia-Jun 1 ; Li, Teng 1 ; Wang, Xiao 1 ; Xu, Jia-Rui 1 ; Wang, Dong-Mei 1 ; Xian, Jian-An 1 ; Zhang, Xiu-Xia 1 ;
作者机构： 1.Chinese Acad Trop Agr Sci, Inst Trop Biosci & Biotechnol, Hainan Prov Key Lab Funct Components Res & Utiliza, Haikou 571101, Peoples R China
2.Hainan Inst Trop Agr Resources, Key Lab Biol & Genet Resources Trop Crops Hainan P, Haikou 571101, Peoples R China
关键词： Radix bupleuri; Growth; Antioxidants; Immune parameters; Aquaculture feeding
期刊名称：AQUACULTURE REPORTS （ 影响因子：3.7； 五年影响因子：3.8 ）
ISSN： 2352-5134
年卷期： 2023 年 33 卷
页码：
收录情况： SCI
摘要： The current study was conducted to determine the effects of dietary Radix bupleuri root extract (RBE) on the growth performance, muscle composition, immune responses, and microcystin-LR (MC-LR) stress resistance of juvenile red claw crayfish (Cherax quadricarinatus). Crayfish (0.28 +/- 0.02 g) were fed experimental diets con-taining graded RBE levels as 0 (Diet 1), 0.2 (Diet 2), 0.4 (Diet 3), 0.6 (Diet 4), 0.8 (Diet 5) and 1.6 (Diet 6) g/kg RBE for 8 weeks. The results showed that specific growth rate (SGR) and weight gain rate (WGR) were signif-icantly increased in the Diet 4 and Diet 5 groups. The content of muscle crude protein was significantly increased in the Diet 4 and Diet 5 groups, and the crude lipid content was significantly decreased in the Diet 5 group. Dietary RBE did not alter the structure of the hepatopancreas. Total antioxidant capacity (T-AOC) and superoxide dismutase (SOD) activities in hepatopancreas and plasma were significantly increased in Diet 4 and Diet 5 groups compared to the control group, while the malondialdehyde (MDA) content in hepatopancreas and plasma was significantly decreased in the Diet 5 group. Plasma alkaline phosphatase (AKP) activity was significantly higher in the Diet 3, Diet 4, Diet 5 and Diet 6 groups. Hepatopancreas and plasma PO activities were significantly increased in Diet 4 and Diet 5 groups. The mRNA levels of extracellular copper/zinc superoxide dismutase (ecCu, Zn-SOD), hemocyanin, C-type lysozyme (C-LZM), GPx, and selenium-dependent glutathione peroxidase (Se-GPx) were significantly up-regulated in the hepatopancreas of crayfish fed Diet 5 than those of the control group. After MC-LR challenge, the survival rates of crayfish in the Diet 4 and Diet 5 groups were significantly higher than the control group. The findings suggest that 0.6-0.8 g/kg of RBE can improve growth and muscle composition and enhance immunity and microcystin-LR resistance.
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