Open AccessCHARACTERISTICS OF FORMING RAINBOW TROUT BROODSTOCKS IN SCIENTIFIC - PRODUCTION CENTER “FOREL” (UKRAINE, OKONSK)
Author(s) -
Natalia Adamovna Korneluk,
Irina Yurievna Kireeva
Publication year - 2019
Publication title -
vestnik astrahanskogo gosudarstvennogo tehničeskogo universiteta. seriâ: rybnoe hozâjstvo
Language(s) - English
Resource type - Journals
eISSN - 2309-978X
pISSN - 2073-5529
DOI - 10.24143/2073-5529-2019-3-81-88
Subject(s) - broodstock , rainbow trout , brood , biology , fishery , trout , reproduction , hatching , ficedula , stock (firearms) , zoology , ecology , fish <actinopterygii> , aquaculture , geography , archaeology
The article presents the analysis of the data on developing brood stock and repair-brood stock of rainbow trout, as well as the data on individual reproductive indicators of females carried out in the Research and Production Center “Forel” (Okonsk Vlg., Ukraine). The stages of development of trout farming in the territories of the former USSR, Ukraine (the Carpathians, Ternopil and Volyn regions), and the Baltic states are considered. Currently, rainbow trout hatcheries need modern methods to increase the efficiency of artificial reproduction by reducing the loss of living material (especially at the early stages of ontogenesis), and increasing the vitality of juveniles. For the study, 20 trout females were selected from those participated in the spawning campaign in 2014, of which 18 females were from the main broodstock and 2 females were spawning for the first time in the repair broodstock. The females were divided into 3 groups depending on weight. In the course of the study there was stated the direct dependence of the main reproductive indicators on weight: the minimum amount of eggs was obtained from individuals with a minimum weight, and the maximum number of eggs was obtained from heavy individuals. It has been found that the greater the weight of individuals, the higher the percentage of egg fertilization. Females from the repair brood stock that spawned for the first time had low breeding and biological indicators.