Effects of water reuse system on antioxidant enzymes of rainbow trout (Oncorhynchus mykiss W., 1792)
Ozmen, I.(Atatuerk Univ., Erzurum (Turkey). Biotechnology Application and Research Centre)E-mail:[email protected] | Bayir, A.(Atatuerk Univ., Erzurum (Turkey). Dept. of Fisheries) | Cengiz, M.(Atatuerk Univ., Erzurum (Turkey). Dept. of Fisheries) | Sirkecioglu, A.N.(Atatuerk Univ., Erzurum (Turkey). Dept. of Fisheries) | Atamanalp, M.(Atatuerk Univ., Erzurum (Turkey). Dept. of Fisheries)
The objective of the present study was to investigate the importance of the antioxidant enzymes glucose-6-phosphate dehydrogenase (G6PD), glutathione reductase (GR), superoxide dismutase (SOD), glutathione peroxidase (GP), and catalase (CAT) in defense against toxic reactive oxygen species (ROS). For this purpose comparative studies were performed on the antioxidant enzyme activities in red cells of rainbow trout (Oncorhynchus mykiss) between flow-through and recirculated breeding systems. The activities of G6PD, GR and SOD were significantly lower in the reuse system than in the flow-through system. On the contrary, GP and CAT activities were increased significantly in the erythrocytes of rainbow trouts held in reuse water tanks.
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