Cultivation of don vimba - Vimba vimba, Linnaeus,1758 - in the RAS system

This article presents research of the cultivation of Don vimba (Vimba vimba (Linnaeus, 1758)) for reproduction and aquaculture purposes in a RAS system. Don vimba is an anadromous species, the reproduction of which occurs in the Don and Kuban basins. It is one of the traditional fishing objects of the Sea of Azov. Currently, the number of Don vimba is low. In 220, the annual runoff decreased to 10.55 km3, which led to the fact that fingerlings did not roll into the Sea of Azov [5]. This leads to the need for artificial reproduction Don vimba. The study purpose was to investigate the growth and survival rate of Don vimba for approbation of a new type of RAS unit. A new design with a unique water treatment unit and a universal mechanical cleaning unit of our own invention was used. Monitoring of hydrochemical parameters in the system during commercial fish farming showed that they varied within the technological norm. After 85 days of fish rearing in a closed system, accumulation of protein and fat in the body of fish was noted, which was within the physiological norm. Analysis of exterior indices showed that with an increase in mass characteristics, there is also an increase in exterior indices; such an indicator as an increase in muscle mass in fish was 1.08 times higher than in fish at the beginning of the experiment. The research has shown that in the RAS systems under maintenance of optimum indicators of water environment it is possible to successfully grow Don vimba both for reproduction purposes and for obtaining high quality marketable products.