Effect of dietary copper on the growth performance, non-specific immunity and resistance to Aeromonas hydrophila of juvenile Chinese mitten crab, Eriocheir sinensis
文献类型: 外文期刊
第一作者: Sun, Shengming
作者: Sun, Shengming;Yu, Na;Jiang, Haibo;Chen, Liqiao;Qin, Jianguang;Sun, Shengming;Ge, Xianping
作者机构:
关键词: Eriocheir sinensis;Copper;Growth;Oxyhemocyanin;Non-specific immunity
期刊名称:FISH & SHELLFISH IMMUNOLOGY ( 影响因子:4.581; 五年影响因子:4.851 )
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年卷期:
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收录情况: SCI
摘要: An 8-week feeding trial was conducted to determine the dietary copper (Cu) on growth performance and immune responses of juvenile Chinese mitten crab Eriocheir sinensis. Six semi-purified diets with six copper levels (1.88, 11.85, 20.78, 40.34, 79.56and 381.2 mg kg~(-1) diet) of CuSO_4-5H_2O were fed to E. sinensis (0.45 ± 0.01 g). Each diet was fed to the crab in five replicates. The crab fed diets with 20.78 and 40.34 mg Cu kg~(-1) diet had significantly greater weight gain and hemolymph oxyhemocyanin content than those fed diets with 1.88 and 381.2 mg Cu kg~(-1) diet. Survival rates of crab were not significantly different between all treatment groups. The activities of copper-zinc superoxide dismutase (Cu-Zn SOD), phenoloxidase (PO), and totalhemocyte count (THC) significantly increased when the supplementation of dietary copper reached 20.78-40.34 mg Cu kg~(-1) diets. In the bacteria challenge experiment with Aeromonas hydrophila, survival rates significantly increased and reached a plateauwhen the dietary copper increased from 1.88 to 40.34 mg kg~(-1), whereas significantly decreased when the dietary copper increased from 40.34 to 381.2 mg kg~(-1). This study indicates that the level of dietary copper is important in regulating growth and immune response in crab.
分类号: S9
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