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Effects of dietary trehalose on growth, trehalose content, non-specific immunity, gene expression and desiccation 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, Xiu-Xia 2 ; Wang, Lei 1 ; Li, Jun-Tao 2 ; Zhang, Ze-Long 2 ; Xu, Jia-Rui 2 ; C 1 ;

作者机构： 1.South China Normal Univ, Inst Modem Aquaculture Sci & Engn IMASE,Key Lab E, Sch Life Sci,Guangdong Prov Key Lab Hlth & Safe, Guangzhou Key Lab Subtrop Biodivers & Biomonitori, Guangzhou 510631, Peoples R China

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

3.Hebei Agr Univ, Ocean Coll, Qinhuangdao 066003, Hebei, Peoples R China

关键词： Cherax quadricarinatus; Trehalose; Growth performance; Non-specific immunity; Desiccation resistance

期刊名称：FISH & SHELLFISH IMMUNOLOGY （ 影响因子：4.581； 五年影响因子：4.851 ）

ISSN： 1050-4648

年卷期： 2021 年 119 卷

页码：

收录情况： SCI

摘要： This study was performed to investigate the effects of dietary trehalose on growth, muscle composition, non-specific immune responses, gene expression and desiccation resistance of juvenile red claw crayfish (Cherax quadricarinatus). A total of 540 (body weight of 0.41 +/- 0.05) crayfish were randomly divided into six groups for a feeding experiment. Six diets with trehalose levels at 0 (Diet 1), 1 (Diet 2), 2 (Diet 3), 5 (Diet 4), 10 (Diet 5) and 15 (Diet 6) g kg(-1) were prepared to feed juvenile red claw crayfish for 8 weeks. The results showed that the weight gain rate (WGR) and specific growth rate (SGR) of crayfish in Diet 4, Diet 5 and Diet 6 groups were significantly improved compared with the control group (Diet 1). Muscle crude protein contents of crayfish fed Diet 4, Diet 5 and Diet 6 were significantly higher than those of the control group. The activities of superoxide dismutase (SOD) and alkaline phosphatase (AKP) in hepatopancreas and hemolymph of crayfish for Diet 4, Diet 5, and Diet 6 groups were significantly increased while malondialdehyde (MDA) content was significantly reduced when compared with the control. The total antioxidant capacity (T-AOC), catalase (CAT) and gluta-thione peroxidase (GPx) activities in the hepatopancreas and hemolymph of crayfish fed Diet 5 and Diet 6 were significantly higher than those in the control group. However, acid phosphatase (ACP) activity was not signif-icantly different among all experimental groups. The hepatopancreas and intestine trehalose contents of crayfish showed an upward trend with the increase of dietary trehalose levels. Compared with the control group, sup-plementation of 5-15 g kg(-1) trehalose in the feed up-regulated the expression levels of GPx, C-type lysozyme (C-LZM), antilipolysacchride factor (ALF), facilitated trehalose transporter homolog isoform X2 (Tret1-2) and facilitated trehalose transporter isoform X4 (Tret1-4) mRNA. In addition, supplementation of 5-15 g kg(-1) trehalose in the feed could improve the survival rate of red claw crayfish under desiccation stress. These results suggested that supplementation of 5-15 g kg(-1) trehalose in feed could significantly improve the growth per-formance, muscle protein, non-specific immunity and desiccation resistance of juvenile red claw crayfish.

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