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《Journal of Henan Agricultural Sciences》 2018-07
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Effects of Vitamin C on the Non-specific Immunity and Antioxidant Capacity of Polyodon spathula Larvae under Nitrite Stress

QIN Guobing;XIONG Wei;YAO Junjie;YANG Tongzhi;JIA Meixiang;Key Laboratory of Animal Genetics,Breeding and Reproduction in the Plateau Mountainous Region,Ministry of Education/College of Animal Science,Guizhou University;  
In order to investigate the effects of different concentrations vitamin C( Vc) on the non-specific immunity and antioxidant capacity of Polyodon spathula during endogenous and mixed nutrition under nitrite stress,the biochemical methods were employed to determine the activities of lysozyme( LZM),acid phosphatase( ACP),alkaline phosphatase( AKP),and the malondialdehyde( MDA) content and the total antioxidant capacity( T-AOC). The results suggested that during endogenous nutrition,the activities of LZM,AKP,ACP and T-AOC were increased in a concentration dependent manner,and the Vc 90 mg/L and 120 mg/L groups significantly increased( P 0. 05) compared with the control and the stress groups; during the mixed nutrition,the activities of LZM,AKP and ACP increased first and then decreasedwith the rising of Vc concentration. In Vc 90 mg/L group,the T-AOC and the activities of LZM,AKP,ACP increased by 61. 1%,71. 8%,33. 7% and 48. 4% from endogenous to mixed nutrition. The MDA content was decreased with the rising of Vc concentration,and significantly lower than that of the stress group( P 0. 05),but no significant differences between endogenous and mixed nutrition stages in all Vc groups. In conclusion,under nitrite stress,90 mg/L Vc soaking could protect the Polyodon spathula larvae during the endogenous and mixed nutrition,and the nitrite stress led to the imbalance of antioxidant capacity and oxidative damage,however,the Vc could alleviate the negative impact of nitrite stress.
【Fund】: 贵州省黔西南特色产业扶持与生态修复协同创新中心平台建设项目(黔科合2016-18);; 贵州省水产产业体系项目(GZCYTZX2013-011)
【CateGory Index】: S917.4
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