Efficiency of the new enzyme additive in carp mixedfeeds

Abstract

The results of using the new enzyme additive in the composition of mixed feeds for growing one-year carp in fish ponds are considered in the article. The hydrochemical regime of the fish ponds, development of the natural feed base (zooplankton, zoobenthos) were studied during the season. It was found that the hydrochemical parameters did not exceed the limits of technological norms. Ponds were characterized by the natural feed base’ low productivity. The bulk of fish products in the ponds was made using artificial mixed feeds. The results of fish cultivation showed that that the use of the new enzyme additive Fekord-Aqua in the composition ofgranular mixed feeds increases the average one-year piece weight by 23.0 %, fish productivity by 4.4 % and reduces feed costs by 23.4 % for fish growth. The use of Fekord Aqua in extruded mixed feeds increases the average one-year piece weight by 6.8%, survival rate by 6.9%, fish productivity by 14.9 % and reduces feed costs by 25,5 %. The muscles of one-year piecesexperimental groupsaccumulated more dry matter by 2.3–9.9 %, the content of raw protein was increased by 2.5–6.9 %, raw fat by 1.9–22.2 % than in the muscles of one-year piecescontrol group. Thus, a new enzyme substance using makes it possible to improve protein, lipid, mineral metabolism, digestibility of feed as well as growing a one-year piece, physiologically ready for wintering.