Evaluation of the effectiveness of Siberian sturgeon (Acipenser Baerii Brandt) rearing in the European North

Abstract

The article presents materials about the rearing of Siberian sturgeon from the Lena population (Acipenser Baerii Brandt) in the conditions of the northern regions. It is noted that, despite the difficult climatic conditions of the European North, the biological and reproductive features of the Siberian sturgeon make it possible to effectively grow sturgeon to marketable sizes, as well as to obtain high quality sexual products and stocking material. The use of Siberian sturgeon in the aquaculture of the North is quite relevant, as it has a high adaptive plasticity, can be grow in a wide temperature range, characterized by good product performance (fast growth, low feed costs, high survival). When creating optimal conditions in fish farms, this species shows considerable potential and shows high grow efficiency. Analysis of fish breeding, biological and economic indicators of growing Siberian sturgeon showed that it has high values of survival (over 95%) and growth rate when using different methods of rearing. Also analyzed the costs of growing marketable fish in cages, established natural reservoirs and in closed recirculating systems (CRS). With using these methods, the cost structure is different, but both technologies allow obtaining products with a high payback level. The reproductive indices of the Siberian sturgeon ripened in the conditions of the North were estimated and it was noted that the females have very high values of working fertility, gametosomatic indices and the mass of eggs. This testifies to the high quality of Siberian sturgeon producers which grown and kept in the natural water bodies of the Northern regions. The comprehensive evaluation of the Siberian sturgeon growing has shown a high efficiency of this object using in the aquaculture of the European North.