Prerequisites for the selection of two-year-old female rainbow trout, according to the timing and multiplicity of maturation, when growing in a closed water supply installation
https://doi.org/10.37663/0131-6184-2023-6-135-140
Abstract
The article presents the results of the evaluation of two-years-old female rainbow trout, matured at the beginning, middle and the end of spawning season, by body weight, reproductive characteristics, embryo survival and the frequency of occurrence of fish with bicycle maturation. Significant differences in the mass of eggs were revealed depending on the timing of ovulation.
The survival rate of embryos did not depend on the weight of eggs and had high rates in fish that matured in the middle and end of spawning. The frequency of occurrence of bicyclic females among groups of two-year-olds who matured at different times had great differences. The data obtained are important when conducting breeding in order to shift the spawning season and create new layering and trout breeds when breeding in RAS.
About the Authors
A. A. Zinchenko
Federal Breeding and Genetic Center of Fish Farming (FSGCR branch of FSBI “Glavrybvod")
Russian Federation
Russian Federation
Alexander A. Zinchenko – Researcher at the Fish Stocks Reproduction Laboratory
188514, Leningrad region, Lomonosovsky district, village. Ropsha, Strelninskoe highway, p.4
N. I. Shindavina
Federal Breeding and Genetic Center of Fish Farming (FSGCR branch of FSBI “Glavrybvod")
Russian Federation
Russian Federation
Nina I. Shindavina – Candidate of Biological Sciences, Leading researcher of the Fish Breeding Laboratory
188514, Leningrad region, Lomonosovsky district, village. Ropsha, Strelninskoe highway, p.4
V. S. Yezhkov
St. Petersburg State University of Veterinary Medicine
Russian Federation
Russian Federation
Vladislav S Yezhkov – Master's Student of the Department of Aquaculture and Fish Diseases
196084, St. Petersburg, Chernihiv str., 5
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For citations:
Zinchenko A.A., Shindavina N.I., Yezhkov V.S. Prerequisites for the selection of two-year-old female rainbow trout, according to the timing and multiplicity of maturation, when growing in a closed water supply installation. Fisheries. 2023;(6):135-140. (In Russ.) https://doi.org/10.37663/0131-6184-2023-6-135-140
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