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. 2014 Dec 12;5:432. doi: 10.3389/fgene.2014.00432

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Copyright © 2014 Vandeputte and Haffray.

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) or licensor 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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Possible uses of genotyping to evolve from individual selection to BLUP (best linear unbiased prediction) and/or sib selection in aquaculture breeding. Numbers are examples and have to be adapted for different species, traits, and breeding designs. (A) Under individual selection candidates are selected based on their own performance. (B) Under walk-back selection, animals selected on their individual performance are genotyped, and a subset of those with balanced family representation is used as broodstock. (C) Under BLUP, all animals are genotyped and phenotyped (possibly for several traits) and selected based on a BLUP breeding value combining phenotypic and pedigree information. (D) BLUP with pre-selection is similar but multi-trait phenotyping and genotyping is done only one a subset of the population pre-selected for its own performance on one trait (usually growth). (E) Under BLUP with sib selection, unselected sibs of the candidates are submitted to a lethal challenge (e.g., disease, processing yields) and genotyped and family values are incorporated in breeding value evaluation for the lethal traits. (F) BLUP with sib and pre-selection combines panels (D,E).