Разработка некоторых рыбоводно-технологических режимов выращивания разновозрастного ремонта европейского сома в прудах
2011
Radko, M.M., National Academy of Sciences. Scientific and Practical Center of Animal Breeding (Belarus). Institute for Fish Industry
In fish rearing pond farms of the Republic of Belarus there were developed fishery and technological schemes of breeding of mixed-age replacement European catfish (Silurus glanis). Rearing of fingerlings was realized in monoculture and in polyculture with carp (Cyprinus carpio) fingerlings. Two-, three- and four-year old European catfish was reared together with even-aged replacement and broodstock of carp (young fish produced as a result of wild egg-laying was used as feeds for European catfish). In course of the study there were presented fishery and biological results of rearing of brood fingerlings, two-, three- and four-year old European catfish in monoculture and polyculture conditions. Research results showed that it was necessary the rear brood fingerlings with the average minimal weight of 80-100 gram, two-year old ones - 1 kilogram, three-year old ones – 1,8-2,0 kilogram, four-year old ones – 3 kilogram. Breeding brood fingerlings of European catfish should be realized in ponds in monoculture and in polyculture with carp fingerlings with fish-holding density up to 1 thousand pieces/ha. Brood two-, three- and four-year old European catfish should be bred in polyculture with even-aged and elder-aged groups of carps with fish-holding density 30 pieces/ha, 10 pieces/ha, and 5-10 pieces/ha respectively.
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