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《Journal of Anhui Agricultural Sciences》 2008-31
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Immunoregulation Effect of Sargassum Polysaccharides on White-leg Shrimp

HE Ying et al (Guangxi Institute of Veterinary,Nanning,Guangxi 530001)  
[Objective] The research aimed to study the effect of sargassum polysaccharides on immune function of white-leg shrimp.[Method] The shrimp feedstuff with sargassum polysaccharides of different ratios(0,0.10%,0.15% and 0.20%) was taken to feed white-leg shrimp for 14 d.The activities of lysozyme,superoxide dismutase,phenoloxidase and acid phosphatase in shrimp hemolymph were detected and the survival rate of shrimp was calculated after challenge exposure.[Result] The shrimp feedstuff with 0.20% sargassum polysaccharides could increase the activity of lysozyme and phenoloxidase extremely significantly and increase the activity of superoxide dismutase,acid phosphatase and the survival rate of challenged shrimp significantly,and the content of lysozyme and phenoloxidase reached(0.209±0.076) and(258.800±203.080) U/ml resp.The shrimp feedstuff with 0.15% sargassum polysaccharides could increase the activity of phenoloxidase and superoxide dismutase extremely significantly and increase the activity of lysozyme and the survival rate of challenged shrimp significantly,and the content of phenoloxidase and superoxide dismutase reached(321.267±218.406) and(0.453±0.190) U/ml resp.[Conclusion] The sargassum polysaccharides could enhance the immune function of white-leg shrimp and the effect was better when its addition amount was 0.20%.
【Fund】: 广西科技攻关资助项目(桂科攻0630001-1D)
【CateGory Index】: S945
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