In conditions of pollution of the aquatic environment with chemicals, the living conditions of fish are disrupted, which affects the quality of fish products. Developing methods to improve the nutritional properties of fish is important in the field of science that integrates fish biology, the study of nutrition and rational management of fish resources, environmental sustainability, etc. In recent years, a significant amount of research has been conducted to investigate the impact of fish nutrition on the quality of fish products in conditions of pollution of the aquatic environment with chemicals in today's conditions. Analyzing the data, it was found that the quality of nutrition depends on the quality and composition of water, which affects the growth, development and health of fish. Considering the use and study of the impact of fish nutrition, as well as the need for nutrients such as proteins, fats, vitamins and minerals, can improve the quality of fish products. Special attention is paid to the role of proteins in fish metabolism using the example of carp (Cyprinus carpio L.), growth and development, as well as adaptation to interesting studies of the composition of tissue proteins of carp during cadmium and lead intoxication. The experiment used two-year-old carp (Cyprinus carpio L.), which is a widespread object of pond culture in Ukraine. Two-year-old carp were caught in the lower section of the Dnieper Reservoir and transferred to the laboratory. After that, they were placed in aquariums for further scientific observations and research. A thorough analysis indicates that considering the impact of toxic substances on fish nutrition is essential to ensure their health and optimal fish production. The development of new feeding strategies and the use of special additives is becoming a key aspect not only to improve product quality, but also to ensure compliance with safety standards and environmental sustainability in the aquaculture and fisheries industry. The reaction of protein metabolism in fish to toxic effects is not sufficiently studied. Therefore, studies of the nature of changes in protein metabolism indicators under the influence of heavy metals are very relevant for predicting the consequences of heavy metal pollution of aquatic ecosystems, as well as for early diagnosis and effective environmental protection measures in fish ponds.
A. A. Buleyko (Fri,) studied this question.
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