Development of reclamation techniques optimized for the process of pike cultivation, species and quantitative composition of polyculture (intermediate results)

Pike as an object of pond aquaculture differs in a number of characteristics that distinguish it from other, more widespread objects — carp, herbivorous fish. The consistently high demand for marketable products, high dietary qualities of meat and, along with this, the ability to increase production efficiency due to biological reclamation - the transformation of the substance of low-productive trash fish, which creates conditions for food competition in polyculture conditions, makes pike a desirable object in pond aquaculture. At the same time, a number of existing problems limit the volume of commercial products produced. This includes, first of all, the low survival rate of juveniles due to cannibalism caused by a shortage of available forage resources at certain stages of juvenile rearing, and other objective factors, and therefore the exploitation of broodstock is often ineffective. Based on these prerequisites, the Institute has planned and is currently implementing a study aimed at increasing production indicators for pike to 25–30 kg / ha during the cultivation of this object in polyculture with carp fish. Such indicators are provided by a number of measures, in particular, rearing pike larvae in various conditions, including using concentrated feed, creating a safe habitat for juvenile pike at the initial stages of its rearing in ponds, and carrying out a number of reclamation measures. At the moment, the project is at the stage of production testing of the draft technological regulations, the development of which required the study of hydrochemical and hydrobiological regimes in ponds, nutritional characteristics, growth rate and physiological state of certain species using reclamation techniques optimized for the pike growing process, species and quantitative composition of polyculture.

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