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Dietary Sargassum glaucescens Acidic-aqueous Extract Administered to Enhance Immune Responses and Disease Resistance of Tiger Shrimp Penaeus monodon

飼料添加粉葉馬尾藻酸性溶液萃取物增強草蝦免疫反應及抗病能力

摘要


The immune parameters and the resistance against Photobacterium damselae of tiger shrimp Penaeus monodon (14.2 ± 1.8 g) were evaluated when the shrimp were fed diets containing the acidicaqueous extract of Sargassum glaucescens (SGE) at 0 (control), 0.5, and 1.0 g/kg for 21 days. Results showed that P. monodon fed a diet containing 1.0 g/kg SGE had significantly increased phenoloxidase activity and respiratory bursts, but decreased superoxide dismutase activity (p < 0.05). The glutathione peroxidase and transglutaminase activities, clotting rate, and phagocytic activity and clearance efficiency toward P. damseale were significantly elevated in shrimp fed 0.5 and 1.0 g/kg SGE-containing diets compared to control shrimp (p < 0.05). In challenged test, the survival of shrimp fed a diet containing 1.0 g/kg SGE was significantly higher (p < 0.05) than that of control shrimp after 7 days. We therefore recommend dietary SGE administration at 1.0 g/kg to enhance the immunity and resistance against P. damselae in P. monodon.

並列摘要


The immune parameters and the resistance against Photobacterium damselae of tiger shrimp Penaeus monodon (14.2 ± 1.8 g) were evaluated when the shrimp were fed diets containing the acidicaqueous extract of Sargassum glaucescens (SGE) at 0 (control), 0.5, and 1.0 g/kg for 21 days. Results showed that P. monodon fed a diet containing 1.0 g/kg SGE had significantly increased phenoloxidase activity and respiratory bursts, but decreased superoxide dismutase activity (p < 0.05). The glutathione peroxidase and transglutaminase activities, clotting rate, and phagocytic activity and clearance efficiency toward P. damseale were significantly elevated in shrimp fed 0.5 and 1.0 g/kg SGE-containing diets compared to control shrimp (p < 0.05). In challenged test, the survival of shrimp fed a diet containing 1.0 g/kg SGE was significantly higher (p < 0.05) than that of control shrimp after 7 days. We therefore recommend dietary SGE administration at 1.0 g/kg to enhance the immunity and resistance against P. damselae in P. monodon.

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