QUALITY AND SAFETY OF FISH OF SELECTED WATER BODIES OF THE NORTH KAZAKHSTAN REGION

Abstract

As a result of the studies, it was found that the fish quality indicators met the requirements. Residual amounts of toxic elements in fish did not exceed the MPC. However, according to the residual content of toxic elements, the largest amount of cadmium was found in fish from Lake Tastemirovka (0.0076 ± 0.00001 mg / kg), arsenic in fish from Lake Lastochka (0.0132 ± 0.002 mg / kg), the lead content did not differ significantly. Mercury was not detected in all samples; it was absent in fish from Lake Tastemirovka. In determining radionuclides, the presence of insignificant residual amounts was established, while the content of cesium in some fish samples was not detected.In the study for helminthiases, it was revealed that the most common disease of fish in water bodies is post diplostomatosis of roach (the extent of invasion was 16.6% and the intensity of 3-6 cysts), less often is ligulosis of crucian carp (the extent was 13.04% and the intensity of 5-6 larvae). In a clinical study of fish for infection with bacteriosis, no characteristic signs of diseases were found.