Grishyn B. Evaluation of crossbred carp of first generation from crossing Antonino-Zozulenets and Lubin intrabreed types of the Ukrainian framed breed.

The dissertation is devoted to the study of the main fish culture parameters of crossbred carp from crossing the broods of Antonino-Zozulenets and Lubin intrabreed types of Ukrainian framed breed. Comprehensive studies of biological features and fish production parameters of rearing of crossbred framed carp in production conditions of a pond fish farm of the forest-steppe zone of Ukraine have been conducted for the first time in Ukraine. In particular, morphometric parameters and reproductive features of broodstock of the original parental forms were analyzed, crossing of brood fish with characteristic feThe advantage of both this year and two years of local groups over the carp of the starting lines in terms of average weight has been established. An increase in the growth rate of both local groups in the first and second years of life was found. According to the fish productivity of the experimental feeding ponds, the advantage of local biennials over the starting lines of carp has been established. Peculiarities of protein and lipid metabolism of the studied groups of fish are shown, as well as the level of their natural resistance is determined.atures of these intrabreed types was performed, rearing of obtained crossbreds in industrial conditions and study of their main biological parameters in comparison with original purebred carp were carried out. Reproduction of purebred and crossbred carp from reciprocal crossings of breeders of Antonino-Zozulenets and Lubin framed carp was carried out using artificial methods of breeding. The response of the brood fish to pituitary injections was 100%.