TO THE POSSIBILITY OF GROWING CARPS FISH FRY IN BRACKISH WATER FROM THE DRAINAGE SYSTEM

Abstract

An experiment was carried out on growing larvae of carp (Cyprinus carpio) and grass carp (Ctenopharyngodon idella) in earthen ponds (1 ha each) with brackish water supplied from a large drainage channel. Free embryos were stocked with a density: common carp - 1 million pcs/ha, grass carp - 0.5 million pcs/ha and were grown for one month. Organic fertilizers and daily application of soy milk were used as water fertilizer. The total catch of ponds in a month showed the following results: in the first pond, 490 thousand pieces of carp fry with a total biomass of 3430 kg were caught, in the second - 215 thousand pieces. grass carp with a total biomass of 1935 kg. The output was 49% and 43%, respectively, the results correspond to the norms for the VII zone of fish farming