Effects of dietary melatonin on growth performance, antioxidant capacity, and nonspecific immunity in crayfish, Cherax destructor
文献类型： 外文期刊
作者： Yang, Ying 1 ; Xu, Wenyue 1 ; Du, Xinglin 1 ; Ye, Yucong 1 ; Tian, Jiangtao 1 ; Li, Yiming 2 ; Jiang, Qichen 3 ; Zhao, Yunlong 1 ;
作者机构： 1.East China Normal Univ, Sch Life Sci, 500 Dongchuan Rd, Shanghai 200241, Peoples R China
2.Chinese Acad Fisheries Sci, Fishery Machinery & Instrument Res Inst, Shanghai 200092, Peoples R China
3.Freshwater Fisheries Res Inst Jiangsu Prov, 79 Chating East St, Nanjing 210017, Peoples R China
4.East China Normal Univ, State Key Lab Estuarine & Coastal Res, Shanghai 200241, Peoples R China
关键词： Melatonin; Growth; Antioxidant; Immunity; Cherax destructor
期刊名称：FISH & SHELLFISH IMMUNOLOGY （ 影响因子：4.7； 五年影响因子：4.7 ）
ISSN： 1050-4648
年卷期： 2023 年 138 卷
页码：
收录情况： SCI
摘要： Melatonin (MT) is an indole hormone widely found in plants and animals. Many studies have shown that MT promotes the growth and immunity of mammals, fish, and crabs. However, the effect on commercial crayfish has not been demonstrated. The purpose of this study was to evaluate the effects of dietary MT on growth perfor-mance and innate immunity of Cherax destructor from three aspects of individual level, biochemical level, and molecular level after 8 weeks of culture. In this study, we found that MT supplementation increased weight gain rate, specific growth rate, and digestive enzyme activity in C. destructor compared to the control group. Dietary MT not only promoted the activity of T-AOC, SOD, and GR, increased the content of GSH, and decreased the content of MDA in the hepatopancreas, but also increased the content of hemocyanin and copper ions and AKP activity in hemolymph. Gene expression results showed that MT supplementation at appropriate doses increased the expression of cell cycle-regulated genes (CDK, CKI, IGF, and HGF) and non-specific immune genes (TRXR, HSP60, and HSP70). In conclusion, our study showed that adding MT to the diet improved growth performance, enhanced the antioxidant capacity of hepatopancreas, and immune parameters of hemolymph in C. destructor. In addition, our results showed that the optimal dietary supplementation dose of MT in C. destructor is 75-81 mg/ kg.
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