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dc.creatorRodde, C.en_US
dc.creatorChatain, B.en_US
dc.creatorVandeputte, M.en_US
dc.creatorTrinh, T.Q.en_US
dc.creatorBenzie, J.en_US
dc.creatorde Verdal, H.en_US
dc.date.accessioned2020-06-29T07:16:28Z
dc.date.available2020-06-29T07:16:28Z
dc.date.issued2020
dc.identifier.citationAquaculture Reports, 17: 100349.en_US
dc.identifier.issn2352-5134en_US
dc.identifier.urihttps://hdl.handle.net/20.500.12348/4203
dc.description.abstractFeed conversion ratio (FCR), the ratio between feed intake and body weight gain, is of major interest for improving aquaculture sustainability through reduced feed costs and environmental impacts. Demonstrating whether FCR measured in juvenile fish is an accurate predictor of their performance during the whole rearing period is critical to developing genetic improvement programs for this trait. This is especially true for estimates obtained in individually reared fish, for which this has high implications regarding the size of the necessary rearing structures. We obtained individual FCR from 30 male Nile tilapia Oreochromis niloticus from the GIFT strain individually reared in a recirculating system, from 36 to 260 g mean weight. They were fed twice a day and uneaten pellets were counted every day to determine the feed intake of each fish. Individual growth was monitored every week. Feed conversion ratio was estimated over two-week periods and over the whole rearing period (210 days). Phenotypic correlations between the two-week FCRs and global FCR estimations were mostly significant (ranged from 0.38 to 0.64). A significant phenotypic correlation between growth and FCR was also found: faster-growing fish had a better (lower) FCR. Individual breeding values for global FCR were estimated using FCR phenotypes from the present study and previously published heritabilities for FCR in Nile tilapia. Potential estimated genetic gain for global FCR was 2.2% per generation with 50% selection intensity. When selecting fish on their FCR from only a two-week period, approximately 50% of the reference genetic gain could be obtained with the same selection intensity. FCR measured during a two-week period at juvenile stage could be a moderately accurate approximation of the whole rearing period FCR, and could be used as a lower cost criterion to select for FCR in future genetic improvement programs using individual rearing of fish.en_US
dc.formatPDFen_US
dc.languageenen_US
dc.publisherElsevieren_US
dc.rightsCC-BY-NC-4.0en_US
dc.subjectgiften_US
dc.subjectgift tilapiaen_US
dc.subjectindividual rearingen_US
dc.subjectrearing techniqueen_US
dc.titleCan individual feed conversion ratio at commercial size be predicted from juvenile performance in individually reared Nile tilapia Oreochromis niloticus?en_US
dc.typeJournal Articleen_US
dcterms.bibliographicCitationRodde, C. et al. (2020). Can individual feed conversion ratio at commercial size be predicted from juvenile performance in individually reared Nile tilapia Oreochromis niloticus. Aquaculture Reports, 17: 100349.
cg.contributor.crpFISHen_US
cg.contributor.funderCGIAR System Officeen_US
cg.coverage.regionGlobalen_US
cg.identifier.worldfish4678
cg.subject.agrovocaquacultureen_US
cg.subject.agrovoctilapiaen_US
cg.subject.agrovocfish feedingen_US
cg.subject.agrovocoreochromis niloticusen_US
cg.subject.agrovocgrowth rateen_US
cg.subject.agrovocselective breedingen_US
cg.contributor.affiliationThe French Agricultural Research Center for International Developmenten_US
cg.contributor.affiliationWorldFishen_US
cg.contributor.affiliationInstitut de Recherche pour le Developpement, UMR: Biodiversité marine, exploitation et conservationen_US
cg.contributor.affiliationFrench National Research Institute for Agriculture, Food and Environment (French National Institute for Agricultural Research)en_US
cg.identifier.statusOpen accessen_US
cg.identifier.ISIindexedISI indexeden_US
cg.contribution.worldfishauthorTrinh, T.Q.en_US
cg.contribution.worldfishauthorBenzie, J.en_US
cg.description.themeSustainable aquacultureen_US
dc.identifier.doihttps://dx.doi.org/10.1016/j.aqrep.2020.100349en_US
cg.creator.idTrong Quoc Trinh: 0000-0001-7769-2250en_US
cg.creator.idJohn Benzie: 0000-0001-9599-8683en_US


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