Content area
Full Text
Abstract. Field research in the Kyiv and Kremenchug reservoirs of the Dnipro cascade has identified certain features in the content of proteins, lipids and carbohydrates in the liver and white skeletal muscle in benthoid (bream Abramis brama, roach Rutilus rutilus) and predatory (zander Sander lucioperca, perch Perca fluviatilis) species during the feeding period. The content of total protein in the liver and muscles of bream, roach and zander and in the muscles of perch from the Kyiv Reservoir slightly exceeded the value for these species of fish that inhabit the Kremenchug Reservoir. The content of total protein in the liver of zander during the feeding period slightly exceeded the value in it in bream and roach. Instead, the protein content in the muscles of bream and roach exceeded its value in the muscles of predatory fish from the Kyiv and Kremechuk reservoirs. The highest content of total lipids was found in the liver of roach, which inhabits both reservoirs. In contrast, the total lipid content in the liver of zander of the Kremenchug Reservoir was almost twice lower than its content in the liver of perch from the Kyiv Reservoir. The total content of lipids in the liver of bream and zander from the Kremenchug Reservoir was higher compared to the liver of these species of fish from the Kyiv Reservoir. The content of total lipids in the white skeletal muscles of all studied fish species from both Kyiv and Kremenchug reservoirs was found to be almost at the same level. The highest content of glycogen was registered in the liver of bream and roach of the Kremenchug Reservoir, which probably exceeded the value in the liver of these species of fish from the Kyiv Reservoir. In contrast, in the liver of predatory fish (zander, perch) from the Kyiv Reservoir, the glycogen content exceeded these values recorded by us in the liver of these fish from the Kremenchug Reservoir. The glycogen content in the muscles of bream and roach from both reservoirs was approximately the same. In the muscles of zander and perch from the Kyiv Reservoir, the glycogen content more than doubled the values recorded in the muscles of these species of fish from the Kremenchug Reservoir. Based on the obtained data, it...