The results of growing young Lena sturgeon (Acipenser baerii Brandt) in the USV on various feed recipes
Abstract and keywords
Abstract (English):
The effect of Aller Arrow S and Aller Trident S formula feeds on the growth, development and accumulation of fat in the muscles of Lena sturgeon juveniles raised in the conditions of ultrasonic testing for a repair herd was studied. The obtained results of cultivation indicate the effectiveness of the use of Aller Arrow feeds to reduce fat accumulation. It is shown that production feeds with a fat content of 14% and a higher (by 4%) energy-protein ratio contribute to an increase in the fatness coefficient and a decrease in the progonicity index, their use leads to an increase in liver weight by 48.5% (p≥0.05), and the gastrointestinal tract by 5.6%. The ratio of connective and adipose tissues, the density of muscle fibers indicates a more intensive accumulation of fat when using Aller Trident S, which indirectly indicates a higher energy (gastronomic) value of meat, due to an increase in its caloric content. According to the average final mass, mass accumulation coefficient, yield and growth of ichthyomass, relative growth rate, average daily growth, the best results were obtained in juveniles raised on production feed, the economic effect was 400 rubles/m3 of the pool.

Keywords:
Lena sturgeon, mass accumulation coefficient, feed costs, morphometric, morphological, histological, fish-breeding indicators
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