| Title: |
ACCOUNTING FOR A MIXTURE OF DIPLOID AND TRIPLOID FISH IN GENETIC EVALUATION |
| Authors: |
Roche, Julien; Patrice, Pierre; Desgranges, Alexandre; Haffray, Pierrick; Phocas, Florence |
| Contributors: |
Syndicat des Sélectionneurs Avicoles et Aquacoles Français (SYSAAF); Génétique Animale et Biologie Intégrative (GABI); AgroParisTech-Université Paris-Saclay-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) |
| Source: |
EAS 2024 ; https://hal.science/hal-04755026 ; EAS 2024, Aug 2024, Copenhague, Denmark |
| Publisher Information: |
CCSD |
| Publication Year: |
2024 |
| Subject Terms: |
[SDV]Life Sciences [q-bio] |
| Subject Geographic: |
Copenhague; Denmark |
| Description: |
International audience ; Induced triploidy is used in various fish and shellfish species to sterilize and improve growth and/or flesh quality in commercial productions, as well as to limit the risk of genetic introgression of farmed genotypes into wild populations. In particular, rainbow trout production of large fillets is based on triploid fish in fresh water. Selective breeding programs on sib performances are exclusively performed on diploid information. Maximizing genetic gain requires the evaluation of breeding values of the diploid candidates based on triploid sibs' performances. In mixed-family designs, this implies genotyping triploids and recovering their pedigree. Until recently, no reliable and open source tools were available to do so. We thus developed methods and R packages for genotype calling (https://cran.rproject.org/web/packages/GenoTriplo/index.html) and parentage assignment of triploids (https://cran.r-project.org/web/packages/APIS/index.html) to properly answer these issues. The relationships between progeny and parents are affected by the triploid nature of offspring as triploid fish inherit two copies of DNA from the mother and one from the father. Therefore, the genetic evaluation gathering information from both diploids and triploids must also account for the various allelic dosages in the relationship matrix used to run a BLUP animal evaluation. This issue was solved in the current study in order to estimate genetic parameters. |
| Document Type: |
conference object |
| Language: |
English |
| Availability: |
https://hal.science/hal-04755026; https://hal.science/hal-04755026v1/document; https://hal.science/hal-04755026v1/file/EAS_ROCHE_2024_summary-vf.pdf |
| Rights: |
info:eu-repo/semantics/OpenAccess |
| Accession Number: |
edsbas.7EAD4877 |
| Database: |
BASE |