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. 2020 Sep 11;11:866. doi: 10.3389/fgene.2020.00866

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Copyright © 2020 Chu, Sørensen, Lund, Meier, Nielsen and Su.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Rate of genetic gain (ΔG; mean of 100 replicates ± standard error) of different genotyping scenarios for 800 fish in B: random genotyping (B_Random); selection of fish from three of the four top fish and one of the four bottom fish, where the top and bottom fish were the best and worst fish, respectively, from each sample of 20 fish (B_T3_4B1_4); selection of fish from one of the two top fish and one of the two bottom fish, where the top and bottom fish were the best and worst fish, respectively, from each sample of 20 fish (B_T1_2B1_2); and selection of the phenotypically best fish from each sample of 20 fish (B_Top1_1). The scenarios assumed genetic correlations (r_g) between the trait measured in B and C of 0.2, 0.5, and 0.8 and heritability of the trait of 0.1 and 0.3. The scenarios used random genotyping of fish in C, and 100% of selected females were kept in 2 consecutive years. C, commercial environment; B, breeding environment.