Open AccessSPECIFIC FEATURES OF BREEDING RUSSIAN STURGEON FINGERLINGS WITH WEIGHT 0.3 - 30 G IN POOLS WITH RECIRCULATING AQUACULTURE SYSTEM
Author(s) -
Elhetawy Ashraf,
Natalia Sudakova,
Adelya Zakirovna Anokhina,
Lidia Mikhailovna Vasilieva
Publication year - 2018
Publication title -
vestnik astrahanskogo gosudarstvennogo tehničeskogo universiteta. seriâ: rybnoe hozâjstvo
Language(s) - English
Resource type - Journals
eISSN - 2309-978X
pISSN - 2073-5529
DOI - 10.24143/2073-5529-2018-3-89-95
Subject(s) - sturgeon , aquaculture , fishery , biology , feed conversion ratio , zoology , fish <actinopterygii> , body weight , endocrinology
The improvement of production processes of sturgeon rearing in the pools with recirculating aquaculture systems is relevant today due to fast development of the industrial methods of commercial sturgeon breeding. The most complicated stage of commercial sturgeon breeding refers to early development of hydrobionts, when changing to exogenous feed and transition from live feed to dry pelleted feed. There have been studied the characteristics of technological processes (sorting, seeding density, feeding) of breeding Russian sturgeon fingerlings with mass from 0.3 g to 30 g. Periodicity of sorting by three size-weight parameters was determined by different size of fingerlings. It has been inferred that the maximum fish growth rate is not favorable, because, to reach it there will be greater feed consumption. There have been worked out the general technological parameters recommended for growing Russian sturgeon fingerlings with mass from 0.3 g to 30 g in the pools with recirculating aquaculture systems. It has been shown that adherence to recommended technological parameters (water level, water temperature, oxygen saturation, seeding density, feeding rate) allows to reach 65% survival capacity of 30 g Russian sturgeon fingerlings that have fully changed to artificial mixed feed.