Study on Effect of Water Disinfectant and Insecticide on Fish Physiology and Growth Performance in Indian Major Carp Labeo rohita

Abstract

The present study was done to evaluate the effect of Didecyldimethyl Ammonium Chloride (DDAC) and Cypermethrin on the water quality, fish physiology and somatic growth of experimental fish Labeo rohita under variable concentration of these chemicals. The effect of DDAC was evaluated at 0.0625 ppm, 0.125 ppm, 0.1875 ppm, and 0.25 ppm concentration whereas the effect of Cypermethrin was evaluated at the concentration of 0.25 ppm, 0.05 ppm, 0.075 ppm, 0.10 ppm. Water quality parameters were found stable except the unionized ammonia. Total serum protein, albumin, globulin, level of glucose and cortisol, hemoglobin, WBC and RBC count were observed during the study. The variation in physiological indices was found significant in all treatments. Observation of Relative growth rate was also found significant in different treatments. Histological study of gills after the 96 hours of exposure of both the chemicals in treatment 3 and 4 causes necrosis, vacuolar degeneration, fusion of gill lamellae, twisting and shortening of secondary gill lamellae, and atrophy of primary and secondary lamellae newline