OpenAccessBelV2, Ncbi, Merge, bibRecord, 000045

Genetic variability in residual feed intake in rainbow trout clones and testing of indirect selection criteria (Open Access publication)

Identifieur interne : 000045 ( Ncbi/Merge ); précédent : 000044; suivant : 000046

Genetic variability in residual feed intake in rainbow trout clones and testing of indirect selection criteria (Open Access publication)

Auteurs : Laure Grima [France] ; Edwige Quillet [France] ; Thierry Boujard [France] ; Christèle Robert-Granié [France] ; Béatrice Chatain [France] ; Muriel Mambrini [France]

Source :

Genetics, Selection, Evolution : GSE [ 0999-193X ] ; 2008.

RBID : PMC:2674895

Abstract

Little is known about the genetic basis of residual feed intake (RFI) variation in fish, since this trait is highly sensitive to environmental influences, and feed intake of individuals is difficult to measure accurately. The purpose of this work was (i) to assess the genetic variability of RFI estimated by an X-ray technique and (ii) to develop predictive criteria for RFI. Two predictive criteria were tested: loss of body weight during feed deprivation and compensatory growth during re-feeding. Ten heterozygous rainbow trout clones were used. Individual intake and body weight were measured three times at threeweek intervals. Then, individual body weight was recorded after two cycles of a three-week feed deprivation followed by a three-week re-feeding. The ratio of the genetic variance to the phenotypic variance was found high to moderate for growth, feed intake, and RFI (VG/VP = 0.63 ± 0.11, 0.29 ± 0.11, 0.29 ± 0.09, respectively). The index that integrates performances achieved during deprivation and re-feeding periods explained 59% of RFI variations. These results provide a basis for further studies on the origin of RFI differences and show that indirect criteria are good candidates for future selective breeding programs.

Url:

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2674895

DOI: 10.1186/1297-9686-40-6-607
PubMed: 18990354
PubMed Central: 2674895

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<series><title level="j">Genetics, Selection, Evolution : GSE</title>
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<front><div type="abstract" xml:lang="en"><p>Little is known about the genetic basis of residual feed intake (RFI) variation in fish, since this trait is highly sensitive to environmental influences, and feed intake of individuals is difficult to measure accurately. The purpose of this work was (i) to assess the genetic variability of RFI estimated by an X-ray technique and (ii) to develop predictive criteria for RFI. Two predictive criteria were tested: loss of body weight during feed deprivation and compensatory growth during re-feeding. Ten heterozygous rainbow trout clones were used. Individual intake and body weight were measured three times at threeweek intervals. Then, individual body weight was recorded after two cycles of a three-week feed deprivation followed by a three-week re-feeding. The ratio of the genetic variance to the phenotypic variance was found high to moderate for growth, feed intake, and RFI (<italic>VG</italic>
/<italic>VP </italic>
= 0.63 ± 0.11, 0.29 ± 0.11, 0.29 ± 0.09, respectively). The index that integrates performances achieved during deprivation and re-feeding periods explained 59% of RFI variations. These results provide a basis for further studies on the origin of RFI differences and show that indirect criteria are good candidates for future selective breeding programs.</p>
</div>
</front>
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  <front><journal-meta><journal-id journal-id-type="nlm-ta">Genet Sel Evol</journal-id>
<journal-title>Genetics, Selection, Evolution : GSE</journal-title>
<issn pub-type="ppub">0999-193X</issn>
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<article-id pub-id-type="pmc">2674895</article-id>
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<title-group><article-title>Genetic variability in residual feed intake in rainbow trout clones and testing of indirect selection criteria (<italic>Open Access publication</italic>
)</article-title>
</title-group>
<contrib-group><contrib id="A1" corresp="yes" contrib-type="author"><name><surname>Grima</surname>
<given-names>Laure</given-names>
</name>
<xref ref-type="aff" rid="I1">1</xref>
<xref ref-type="aff" rid="I2">2</xref>
<email>laure.grima@jouy.inra.fr</email>
</contrib>
<contrib id="A2" contrib-type="author"><name><surname>Quillet</surname>
<given-names>Edwige</given-names>
</name>
<xref ref-type="aff" rid="I1">1</xref>
</contrib>
<contrib id="A3" contrib-type="author"><name><surname>Boujard</surname>
<given-names>Thierry</given-names>
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</name>
<xref ref-type="aff" rid="I3">3</xref>
</contrib>
<contrib id="A5" contrib-type="author"><name><surname>Chatain</surname>
<given-names>Béatrice</given-names>
</name>
<xref ref-type="aff" rid="I2">2</xref>
</contrib>
<contrib id="A6" contrib-type="author"><name><surname>Mambrini</surname>
<given-names>Muriel</given-names>
</name>
<xref ref-type="aff" rid="I1">1</xref>
</contrib>
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INRA, UR 544 Génétique des poissons, Domaine de Vilvert, 78350 Jouy-en-Josas, France</aff>
<aff id="I2"><label>2</label>
Ifremer, Station d'aquaculture expérimentale, chemin de Maguelone, 34250 Palavas-les-Flots, France</aff>
<aff id="I3"><label>3</label>
INRA, UR 631 Station d'amélioration génétique des animaux, BP 52627, 31320 Castanet-Tolosan, France</aff>
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<year>2008</year>
</date>
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<month>7</month>
<year>2008</year>
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<permissions><copyright-statement>Copyright © 2008 INRA, EDP Sciences</copyright-statement>
<copyright-year>2008</copyright-year>
<copyright-holder>INRA, EDP Sciences</copyright-holder>
</permissions>
<abstract><p>Little is known about the genetic basis of residual feed intake (RFI) variation in fish, since this trait is highly sensitive to environmental influences, and feed intake of individuals is difficult to measure accurately. The purpose of this work was (i) to assess the genetic variability of RFI estimated by an X-ray technique and (ii) to develop predictive criteria for RFI. Two predictive criteria were tested: loss of body weight during feed deprivation and compensatory growth during re-feeding. Ten heterozygous rainbow trout clones were used. Individual intake and body weight were measured three times at threeweek intervals. Then, individual body weight was recorded after two cycles of a three-week feed deprivation followed by a three-week re-feeding. The ratio of the genetic variance to the phenotypic variance was found high to moderate for growth, feed intake, and RFI (<italic>VG</italic>
/<italic>VP </italic>
= 0.63 ± 0.11, 0.29 ± 0.11, 0.29 ± 0.09, respectively). The index that integrates performances achieved during deprivation and re-feeding periods explained 59% of RFI variations. These results provide a basis for further studies on the origin of RFI differences and show that indirect criteria are good candidates for future selective breeding programs.</p>
</abstract>
<kwd-group><kwd>rainbow trout</kwd>
<kwd>clone</kwd>
<kwd>residual feed intake</kwd>
<kwd>indirect criteria</kwd>
<kwd>selection</kwd>
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</front>
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<affiliations><list><country><li>France</li>
</country>
<region><li>Languedoc-Roussillon</li>
<li>Midi-Pyrénées</li>
<li>Occitanie (région administrative)</li>
<li>Île-de-France</li>
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<settlement><li>Castanet-Tolosan</li>
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<tree><country name="France"><region name="Île-de-France"><name sortKey="Grima, Laure" sort="Grima, Laure" uniqKey="Grima L" first="Laure" last="Grima">Laure Grima</name>
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<name sortKey="Boujard, Thierry" sort="Boujard, Thierry" uniqKey="Boujard T" first="Thierry" last="Boujard">Thierry Boujard</name>
<name sortKey="Chatain, Beatrice" sort="Chatain, Beatrice" uniqKey="Chatain B" first="Béatrice" last="Chatain">Béatrice Chatain</name>
<name sortKey="Grima, Laure" sort="Grima, Laure" uniqKey="Grima L" first="Laure" last="Grima">Laure Grima</name>
<name sortKey="Mambrini, Muriel" sort="Mambrini, Muriel" uniqKey="Mambrini M" first="Muriel" last="Mambrini">Muriel Mambrini</name>
<name sortKey="Quillet, Edwige" sort="Quillet, Edwige" uniqKey="Quillet E" first="Edwige" last="Quillet">Edwige Quillet</name>
<name sortKey="Robert Granie, Christele" sort="Robert Granie, Christele" uniqKey="Robert Granie C" first="Christèle" last="Robert-Granié">Christèle Robert-Granié</name>
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Genetic variability in residual feed intake in rainbow trout clones and testing of indirect selection criteria (Open Access publication)

Genetic variability in residual feed intake in rainbow trout clones and testing of indirect selection criteria (Open Access publication)

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