Open AccessResults of artificial selection, fertilization and incubation of roe (eggs) of ukrainian carp fish
Author(s) -
N. Kh. Sergaliev,
Бекбол Сариев,
Arthur Tumenov,
Serik Bakiyev
Publication year - 2020
Publication title -
ķaraġandy universitetìnìṇ habaršysy. biologiâ, medicina, geografiâ seriâsy/k̦araġandy universitetìnìn̦ habaršysy. biologiâ, medicina, geografiâ seriâsy
Language(s) - English
Resource type - Journals
eISSN - 2663-5003
pISSN - 2518-7201
DOI - 10.31489/2020bmg4/72-78
Subject(s) - carp , biology , common carp , incubation , zoology , laboratory flask , human fertilization , sperm , reproduction , cyprinus , fishery , fish <actinopterygii> , ecology , chemistry , anatomy , botany , biochemistry
The article presents the results of artificial reproduction of ukrainian carp fish grown in the conditions of recirculating aquaculture systems (RAS). Due to the creation of optimal temperature and oxygen conditions, feeding rates in the conditions of installations with a closed water supply cycle, the time of sexual maturity of fish is reduced. The study used individuals of ukrainian carp fish that have reached sexual maturity, reared under RAS. The selection of the reproductive products of eggs and sperm was carried out in laboratory conditions using sterile glassware and laboratory instruments. When receiving reproductive products, the quality of eggs and sperm was determined on a scale of points. Directly for the insemination of eggs, we used sperm from males of Ukrainian carp fish whose quality corresponded to 4 and 5 points. Then the fertilized eggs were de-glued by means of skim milk and bubbling in the flasks of the «Weiss» apparatus with subsequent incubation. The main parameters of the incubation of fertilized eggs of the Ukrainian carp fish in the flasks of the «Weiss» apparatus have been studied. The direct temperature influence on the duration of development of eggs during incubation was analyzed. The article presents studies of the most favorable parameters for incubation in the laboratory conditions at which the optimal temperature was 20–22 ºC, and the oxygen content from 6 to 8 mg/l. When working with these criteria, the percentage of fertilization of ukrainian carp fish eggs was 75–80 %. The yield of three-day larvae from one female corresponded to 100–250 thousand pieces.