The toxic effects of ammonia on growth rate and some blood parameters in common carp (Cyprinus carpio L.)

This study was performed to know the effect of ammonia on the blood picture and the weight of common carp fish. 50 fish were used at the age of 6 months and were divided into two groups. Each group included 25 fish. The first group represented the treatment group with ammonia at a concentration of 1.0 mg/ L. and the second group represented control group. It is grown in plastic basins with dimensions of 1.5 × 2 meters and continued treatment for four weeks. It was observed that the weight in the ammonium treatment group had the lowest significant value (p≤0.05) compared to the control group. It was also observed in this study that the ammonia group had the lowest significant values in (white blood cells, red blood cells, hemoglobin concentration and Packed cell volume) compared with control group. As for the biochemical parameters, it was observed that the Glucose concentration and each of the enzymes Alanine Aminotransferase (ALT) and Aspartate Aminotransferase (AST) had a record the highest value in the group treated with ammonia compared with the control group while the total protein recorded the lowest significant value in the group treated with ammonia Compared to control group. We conclude from this study that increasing the concentration of ammonia in the aquatic environment has a negative impact on fish breeding and health.