OPPORTUNITIES FOR GROWING COMMERCIAL PRODUCTS AUSTRALIAN REDCLAWED CRAB (СHERAX QUADRICARINATUS) IN KAZAKHSTAN

Abstract

The expansion of the range of commercial aquaculture in Kazakhstan is en-sured through the development of ne  facilities and technologies for their cultiva-tion. Breeding of freshwater heat-loving tropical crayfish is a relevant and economi-cally promising direction. Australian red claw crayfish, due to its qualities, is be-coming more widespread. Abroad, technologies for breeding the Austrian red claw crayfish in RAS and ponds have now been developed [1-5]. In Kazakhstan, for the first time, the adaptation of the industrial cultivation of the Australian red claw crayfish in fish farms is being carried out. The article presents the results of three technologies for the industrial cultivation of commercial products of the Australian red claw crayfish in the conditions of fish farms in Kazakhstan. The data of monitoring of hydrochemical indicators of water in fish tanks are given. The data on the dynamics of the absolute, average dai-ly growth and survival of cancer are presented. The parameters of the growth rate are determined from the values of the mass accumulation coefficients and the growth rate. Data on the feeding of the Australian red claw crayfish with various feeds are presented with indication of feed coefficients. Based on the research, the economic efficiency of Australian red claw cultivation technologies in recirculating water installations, pools and Yeisk-type flumes has been determined.