Quantifying the genetic parameters of feed efficiency in juvenile Nile tilapia Oreochromis niloticus

Autor: de Verdal, Hugues, Vandeputte, Marc, Mekkawy, Wagdy, Chatain, Béatrice, Benzie, John A. H.
Přispěvatelé: WorldFish, CGIAR, Partenaires INRAE, Institut des Sciences de l'Evolution de Montpellier (UMR ISEM), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-École pratique des hautes études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Montpellier (UM)-Institut de recherche pour le développement [IRD] : UR226-Centre National de la Recherche Scientifique (CNRS), Génétique Animale et Biologie Intégrative (GABI), Institut National de la Recherche Agronomique (INRA)-AgroParisTech, Université de Montpellier (UM), Animal Production Department, Faculty of Agriculture, Ain Shams University (ASU), School of Biological, Earth and Environmental Sciences [Cork] (BEES), University College Cork (UCC), Université Paris-Saclay, Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER), Département Performances des systèmes de production et de transformation tropicaux (Cirad-PERSYST), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad), AgroParisTech-Institut National de la Recherche Agronomique (INRA), MARine Biodiversity Exploitation and Conservation (UMR MARBEC), Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-École Pratique des Hautes Études (EPHE)
Jazyk: angličtina
Rok vydání: 2018
Předmět:
Male
fenetic estimations
Efficacité conversion alimentaire
lcsh:QH426-470
tilapia
[SDV]Life Sciences [q-bio]
[SDV.SA.ZOO]Life Sciences [q-bio]/Agricultural sciences/Zootechny
chemical and pharmacologic phenomena
Aquaculture
heritability
Genetic estimations
Heritability
Nutrigenomics
correlations
[SDV.BA.ZV]Life Sciences [q-bio]/Animal biology/Vertebrate Zoology
Animals
L02 - Alimentation animale
Paramètre génétique
feed conversion ratio
[SDV.GEN]Life Sciences [q-bio]/Genetics
Correlations
Body Weight
Oreochromis niloticus
Temperature
Feed conversion ratio
Cichlids
L10 - Génétique et amélioration des animaux
Animal Feed
lcsh:Genetics
[SDV.GEN.GA]Life Sciences [q-bio]/Genetics/Animal genetics
Phenotype
[SDE]Environmental Sciences
Female
M12 - Production de l'aquaculture
Alimentation des poissons
[SDV.AEN]Life Sciences [q-bio]/Food and Nutrition
Juvénile
Research Article
Selective Breeding
Tilapia
Zdroj: BMC Genetics
BMC Genetics, BioMed Central, 2018, 19, pp.1-10. ⟨10.1186/s12863-018-0691-y⟩
Bmc Genetics (1471-2156) (Bmc), 2018-11, Vol. 19, N. 105, P. 10p.
BMC Genetics, BioMed Central, 2018, 19
BMC Genetics, BioMed Central, 2018, 19, pp.105. ⟨10.1186/s12863-018-0691-y⟩
BMC Genetics, Vol 19, Iss 1, Pp 1-10 (2018)
BMC Genetics, 2018, 19, pp.1-10. ⟨10.1186/s12863-018-0691-y⟩
ISSN: 1471-2156
DOI: 10.1186/s12863-018-0691-y⟩
Popis: International audience; Background: Improving feed efficiency in fish is crucial at the economic, social and environmental levels with respect to developing a more sustainable aquaculture. The important contribution of genetic improvement to achieve this goal has been hampered by the lack of accurate basic information on the genetic parameters of feed efficiency in fish. We used video assessment of feed intake on individual fish reared in groups to estimate the genetic parameters of six growth traits, feed intake, feed conversion ratio (FCR) and residual feed intake in 40 pedigreed families of the GIFT strain of Nile tilapia, Oreochromis niloticus. Feed intake and growth were measured on juvenile fish (22.4g mean body weight) during 13 consecutive meals, representing 7days of measurements. We used these data to estimate the FCR response to different selection criteria to assess the potential of genetics as a means of increasing FCR in tilapia. Results: Our results demonstrate genetic control for FCR in tilapia, with a heritability estimate of 0.320.11. Response to selection estimates showed FCR could be efficiently improved by selective breeding. Due to low genetic correlations, selection for growth traits would not improve FCR. However, weight loss at fasting has a high genetic correlation with FCR (0.80 +/- 0.25) and a moderate heritability (0.23), and could be an easy to measure and efficient criterion to improve FCR by selective breeding in tilapia. Conclusion: At this age, FCR is genetically determined in Nile tilapia. A selective breeding program could be possible and could help enabling the development of a more sustainable aquaculture production.
Databáze: OpenAIRE
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