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Wang H.-W.,Hebei University | Xu H.-M.,Hebei University | Xiao G.-H.,Fisheries Research Institute of Hebei Province | Zhao C.-L.,Fisheries Research Institute of Hebei Province | And 4 more authors.
Bulletin of Environmental Contamination and Toxicology | Year: 2010

The effects of dietary Selenium (Se) supplementation on muscle superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPX) activities and haemolymph superoxide anions (O 2 -) of Neocaridina heteropoda exposed to ambient nitrite were investigated. The results showed supplementation of Se in diet could enhance the resistance of shrimp to low concentration ambient nitrite. The results demonstrated that Se might have a potentially useful role as an effective antioxidant and resistance to aqueous nitrite in shrimp and the effect of the organic Se was better than that of the inorganic Se. © 2009 Springer Science+Business Media, LLC. Source


Wang H.-W.,Hebei University | Cai D.-B.,Hebei University | Zhao C.-L.,Fisheries Research Institute of Hebei Province | Xiao G.-H.,Fisheries Research Institute of Hebei Province | And 5 more authors.
Israeli Journal of Aquaculture - Bamidgeh | Year: 2010

The effects of the manganese (Mn) supplemented diets on the level of superoxide anions (O-2) in the hemolymph, and the activity of superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GPX) in the muscle of Neocaridina heteropoda were investigated. Manganese sulfate (MnSO4) was added to a basal diet at 0, 20, 40, 60, 80, or 100 μg/g. Diets were fed to triplicate groups of shrimp (0.30±0.11 g, 1.4±0.1 cm) in a recirculating freshwater rearing system for 30 days. The Mn concentration in the rearing water, monitored during feeding, was 1.00±0.02 μg/l. O- 2 was lower and antioxidant enzyme activity was higher (p<0.05) in shrimps fed Mn-supplemented diets than in shrimps fed the control. Antioxidant enzyme activity reached a maximum when the Mn concentration was 60 μg/g diet. Source

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