STUDYING REPRODUCTIVE FEED APPLICATION FOR STURGEON

The purpose of the work is to study the effect of newly developed feed additives from fish milk and glycerin on the rate of maturation of sturgeon reproductive products and the feed coefficient. The studies were carried out in accordance with standard methods for conducting scientific and industrial research on fish farming in BISKO LLC, Bryukhovetsky District of the Krasnodar Region. The duration of the experiment was 8 months. Absolute fecundity in the second group with the use of 2.0 % glycerol was higher by 0.6 %, in the third group with the use of Glynmol – by 1.2 %. Working productivity in the second group was lower than the control by 1.1 %, in the third group it was significantly higher by 2.9 % (P < 0.05). Relative fecundity with the use of Glinmol was higher than the control by 0.2 %, with the use of glycerin – by 0.2 % lower than the control indicator. The number of days to reach the 4th stage of maturity in sturgeons in the second group exceeded the control indicator by 2.0 %. In the third group, there was a tendency to decrease this indicator by 2.1 %, the diameter of the eggs exceeded the control by 4.1 %. In the control and in the second group of the experiment, with the use of glycerol, the diameter of the eggs was identical. Feed consumption at the 3rd stage of maturity exceeded the control by 5.6 % in the second and by 10.5 % in the third. The feed coefficient when using glycerin decreased by 2.9 % when using Glinmol – by 2.3 %. At the 4th stage of maturity, feed intake was higher than the control by 5.5 and 8.9 %, respectively. The feed coefficient decreased in both experimental groups by 97.5 % relative to the control.