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http://dx.doi.org/10.5657/KFAS.2022.0549

Estimation of Genetic Parameter for Growth Traits of Olive Flounder Paralichthys olivaceus on the 8th Generation of Selective Breeding Using Multiple Traits Animal Model  

Park, Jong-Won (Fish Genetics and Breeding Research Center, National Institute of Fisheries Science)
Lee, Dain (Fish Genetics and Breeding Research Center, National Institute of Fisheries Science)
Jung, Hyo Sun (Fish Genetics and Breeding Research Center, National Institute of Fisheries Science)
Kim, Julan (Fish Genetics and Breeding Research Center, National Institute of Fisheries Science)
Yang, Hye-Rim (Fish Genetics and Breeding Research Center, National Institute of Fisheries Science)
Kim, Hyun-Chul (Research Planning Department, National Institute of Fisheries Science)
Lee, Jeong-Ho (Fish Genetics and Breeding Research Center, National Institute of Fisheries Science)
Publication Information
Korean Journal of Fisheries and Aquatic Sciences / v.55, no.5, 2022 , pp. 549-556 More about this Journal
Abstract
The aim of this study was to evaluate the genetic parameters of growth traits for improvement breeding in olive flounder Paralichthys olivaceus at the 8th generation of selective breeding in April 2021. Growth traits such as total length, body weight and condition factor at 11 months of age were measured for 7,508 individuals with confirmed paternity. Data were analyzed using the restricted maximum likelihood method applied to a multiple traits animal model. The effects of sex and family were significantly different across traits (P<0.05). The heritability values of total length, body weight and condition factor were estimated to be high as 0.479, 0.457, and 0.466, respectively. Correlation analysis between phenotypic and breeding values, indicated that the selection accuracy was 75.9-85.2% for all traits. To increase the selection accuracy for parent fish selection, the sex and pedigree characteristics that affect each trait should be considered. Moreover, further improvement of multiple traits can be achieved if the correlation between each trait is appropriately considered.
Keywords
Genetic parameter; Heritability; Growth traits; Selection; Olive flounder;
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Times Cited By KSCI : 3  (Citation Analysis)
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