The safety evaluation of prebiotic isomalto-oligosaccharid on the liver and gill tissues in common carp (Cyprinus carpio) exposed to lethal concentrations of butachlor toxin

The aim of this study was to evaluate the safety effects of prebiotic isomalto-oligosaccharid on the damage of liver and gill tissues in common carp exposed to lethal concentrations of toxin butachlor. A total of 120 specimens of common carp with an average weight of 6.13±0.31 g were kept. Water physicochemical parameters were measured during the experiment. LC50 96h for toxin butachlor was obtained 0.785 on the basis of four lethal concentrations of 1.05ppm, 1.1ppm, 1.2ppm and 1.15ppm, each with three replications. The highest and widest complications were observed in primary and secondary blade gill including hyperplasia, necrosis, secondary blade attachment, destruction of secondary lamellae and secondary lamellae was bent. In liver complication of hemorrhage, necrosis, the destruction of liver cells were observed. This study showed that prebiotic isomalto-oligosaccharid can reduce the damage of liver and gill tissues in exposure to lethal concentrations of butachlor poison.