Effects of ascorbic acid and glucose applied as food supplements on selected indices of Siberian sturgeon (Acipenser baeri Brandt, 1858) culture in cooling water

Siberian sturgeon weighing 50 plus or minus 5 g, cultured in cages stocked at 45 specimens/m super(3) density and placed in cooling water, were fed Dan-ex 2545 trout feed for 112 days. Experimental treatments differed in the amount of ascorbic acid + glucose mixture (1:9) added to the feed. The mixture was applied, in individual treatments, in doses of 0; 1; 5; and 10 g/kg feed, corresponding to ascorbic acid doses of 0; 0.1; 0.5; and 1 g/kg feed. The highest mixture doses resulted in a significant increase in the fish body fat level; however, no significant effect on fish growth was observed.