Selection for feed efficiency in Atlantic salmon using individual indicator traits based on stable isotope profiling
International audience AbstractBackgroundWe used stable isotope profiling (15N and 13C) to obtain indicator phenotypes for feed efficiency in aquaculture. Our objectives were to (1) examine whether atom percent of stable isotopes of nitrogen and carbon can explain more of the variation in feed conve...
Published in: | Genetics Selection Evolution |
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ftccsdartic:oai:HAL:hal-02105887v1 2023-05-15T15:31:16+02:00 Selection for feed efficiency in Atlantic salmon using individual indicator traits based on stable isotope profiling Dvergedal, Hanne Ødegård, Jørgen Øverland, Margareth Mydland, Liv Torunn Klemetsdal, Gunnar 2019-12 https://hal.archives-ouvertes.fr/hal-02105887 https://hal.archives-ouvertes.fr/hal-02105887/document https://hal.archives-ouvertes.fr/hal-02105887/file/12711_2019_Article_455.pdf https://doi.org/10.1186/s12711-019-0455-9 en eng HAL CCSD BioMed Central info:eu-repo/semantics/altIdentifier/doi/10.1186/s12711-019-0455-9 hal-02105887 https://hal.archives-ouvertes.fr/hal-02105887 https://hal.archives-ouvertes.fr/hal-02105887/document https://hal.archives-ouvertes.fr/hal-02105887/file/12711_2019_Article_455.pdf doi:10.1186/s12711-019-0455-9 info:eu-repo/semantics/OpenAccess ISSN: 0999-193X EISSN: 1297-9686 Genetics Selection Evolution https://hal.archives-ouvertes.fr/hal-02105887 Genetics Selection Evolution, BioMed Central, 2019, 51 (1), pp.13. ⟨10.1186/s12711-019-0455-9⟩ [SDV]Life Sciences [q-bio] info:eu-repo/semantics/article Journal articles 2019 ftccsdartic https://doi.org/10.1186/s12711-019-0455-9 2021-02-21T00:08:41Z International audience AbstractBackgroundWe used stable isotope profiling (15N and 13C) to obtain indicator phenotypes for feed efficiency in aquaculture. Our objectives were to (1) examine whether atom percent of stable isotopes of nitrogen and carbon can explain more of the variation in feed conversion ratio than growth alone, and (2) estimate the heritabilities of and genetic correlations between feed efficiency, growth and indicator traits as functions of nitrogen and carbon metabolism in various tissues. A 12-day experiment was conducted with 2281 Atlantic salmon parr, with an average initial weight of 21.8 g, from 23 full-sib families that were allocated to 46 family tanks and fed an experimental diet enriched with 15N and 13C.ResultsUsing leave-one-out cross-validation, as much as 79% of the between-tank variation in feed conversion ratio was explained by growth, indicator traits, and sampling day, compared to 62% that was explained by growth and sampling day alone. The ratio of tissue metabolism, estimated by a change in isotope fractions relative to body growth, was used as an individual indicator for feed efficiency. For these indicator ratio traits, the estimated genetic correlation to feed conversion ratio approached unity but their heritabilities were low (0.06 to 0.11). These results indicate that feed-efficient fish are characterized by allocating a high fraction of their metabolism to growth. Among the isotope indicator traits, carbon metabolism in the liver had the closest estimated genetic correlation with feed conversion ratio on a tank level (− 0.9) but a low estimated genetic correlation with individually recorded feed efficiency indicator ratio traits. The underlying determinants of these correlations are largely unknown.ConclusionsOur findings show that the use of indicator ratio traits to assess individual feed efficiency in Atlantic salmon has great prospects in selection programs. Given that large quantities of feeds with contrasting isotope profiles of carbon and/or nitrogen can be ... Article in Journal/Newspaper Atlantic salmon Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Genetics Selection Evolution 51 1 |
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Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
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ftccsdartic |
language |
English |
topic |
[SDV]Life Sciences [q-bio] |
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[SDV]Life Sciences [q-bio] Dvergedal, Hanne Ødegård, Jørgen Øverland, Margareth Mydland, Liv Torunn Klemetsdal, Gunnar Selection for feed efficiency in Atlantic salmon using individual indicator traits based on stable isotope profiling |
topic_facet |
[SDV]Life Sciences [q-bio] |
description |
International audience AbstractBackgroundWe used stable isotope profiling (15N and 13C) to obtain indicator phenotypes for feed efficiency in aquaculture. Our objectives were to (1) examine whether atom percent of stable isotopes of nitrogen and carbon can explain more of the variation in feed conversion ratio than growth alone, and (2) estimate the heritabilities of and genetic correlations between feed efficiency, growth and indicator traits as functions of nitrogen and carbon metabolism in various tissues. A 12-day experiment was conducted with 2281 Atlantic salmon parr, with an average initial weight of 21.8 g, from 23 full-sib families that were allocated to 46 family tanks and fed an experimental diet enriched with 15N and 13C.ResultsUsing leave-one-out cross-validation, as much as 79% of the between-tank variation in feed conversion ratio was explained by growth, indicator traits, and sampling day, compared to 62% that was explained by growth and sampling day alone. The ratio of tissue metabolism, estimated by a change in isotope fractions relative to body growth, was used as an individual indicator for feed efficiency. For these indicator ratio traits, the estimated genetic correlation to feed conversion ratio approached unity but their heritabilities were low (0.06 to 0.11). These results indicate that feed-efficient fish are characterized by allocating a high fraction of their metabolism to growth. Among the isotope indicator traits, carbon metabolism in the liver had the closest estimated genetic correlation with feed conversion ratio on a tank level (− 0.9) but a low estimated genetic correlation with individually recorded feed efficiency indicator ratio traits. The underlying determinants of these correlations are largely unknown.ConclusionsOur findings show that the use of indicator ratio traits to assess individual feed efficiency in Atlantic salmon has great prospects in selection programs. Given that large quantities of feeds with contrasting isotope profiles of carbon and/or nitrogen can be ... |
format |
Article in Journal/Newspaper |
author |
Dvergedal, Hanne Ødegård, Jørgen Øverland, Margareth Mydland, Liv Torunn Klemetsdal, Gunnar |
author_facet |
Dvergedal, Hanne Ødegård, Jørgen Øverland, Margareth Mydland, Liv Torunn Klemetsdal, Gunnar |
author_sort |
Dvergedal, Hanne |
title |
Selection for feed efficiency in Atlantic salmon using individual indicator traits based on stable isotope profiling |
title_short |
Selection for feed efficiency in Atlantic salmon using individual indicator traits based on stable isotope profiling |
title_full |
Selection for feed efficiency in Atlantic salmon using individual indicator traits based on stable isotope profiling |
title_fullStr |
Selection for feed efficiency in Atlantic salmon using individual indicator traits based on stable isotope profiling |
title_full_unstemmed |
Selection for feed efficiency in Atlantic salmon using individual indicator traits based on stable isotope profiling |
title_sort |
selection for feed efficiency in atlantic salmon using individual indicator traits based on stable isotope profiling |
publisher |
HAL CCSD |
publishDate |
2019 |
url |
https://hal.archives-ouvertes.fr/hal-02105887 https://hal.archives-ouvertes.fr/hal-02105887/document https://hal.archives-ouvertes.fr/hal-02105887/file/12711_2019_Article_455.pdf https://doi.org/10.1186/s12711-019-0455-9 |
genre |
Atlantic salmon |
genre_facet |
Atlantic salmon |
op_source |
ISSN: 0999-193X EISSN: 1297-9686 Genetics Selection Evolution https://hal.archives-ouvertes.fr/hal-02105887 Genetics Selection Evolution, BioMed Central, 2019, 51 (1), pp.13. ⟨10.1186/s12711-019-0455-9⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1186/s12711-019-0455-9 hal-02105887 https://hal.archives-ouvertes.fr/hal-02105887 https://hal.archives-ouvertes.fr/hal-02105887/document https://hal.archives-ouvertes.fr/hal-02105887/file/12711_2019_Article_455.pdf doi:10.1186/s12711-019-0455-9 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1186/s12711-019-0455-9 |
container_title |
Genetics Selection Evolution |
container_volume |
51 |
container_issue |
1 |
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1766361761717420032 |