| Summary: | The paper expounds the research data on probiotic BS 225 administration effect on the growth rate in Siberian sturgeon young fishes grown under the conditions of industrial workshop on the fishery farm «Novosibirsky Rybzavod». To grow the fishes, fish-breeding pools made of concrete were employed which were supplied with a pit toremove feed remains and excrements, storage capacitor, mechanical and biological unit for pollution abatement to get the pools ready to be filled with water. The 1st experimental group of fishes received the preparation at the dose 10 mcl per kg; the 2nd one did 5 mcl per kg. The dose was recalculated after each 10 days. To clarify the effect of the preparation the control weighing was done regularly. The fish weight and body length, the largest height and some plastic traits were determined with common techniques. According to the data obtained, the absolute weight of the experimental underyearlings exceeded that of the control analogues when fed the microbiologic preparation. Expressivity of the absolute weight change depended on the preparation dose. The maximal gain in weight was recorded with the preparation given at the dose 10 microliters per 1 kg of weight. The sturgeons of the 1st experimental group exceeded the analogues of the 2nd experimental group on the 2nd and 3rd months of examination. Изложены результаты исследования по применению пробиотика BS 225 на скорость роста молоди сибирского осетра, выращенного в условиях индустриального цеха рыбоводного хозяйства «Новосибирский рыбзавод». Для выращивания рыбы использовались рыбоводные бассейны из бетона, снабжённые приямком для удаления остатков корма и экскрементов, накопительной емкости, механического и биологического блока очистки и водоподготовки. Препарат применяли в 1-й опытной группе в дозе 10 мкл/кг массы рыб, во второй – 5 мкл/кг. Перерасчет дозы проводили через каждые 10 суток. Для выяснения влияния препарата контрольные взвешивания проводили регулярно. Определяли абсолютную массу рыб и длину тела, наибольшую высоту ...
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