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dc.contributor.authorRomana-Eguia, Maria Rowena R.
dc.contributor.authorDoyle, Roger W.
dc.date.accessioned2013-02-04T07:31:02Z
dc.date.available2013-02-04T07:31:02Z
dc.date.issued1992
dc.identifier.citationRomana-Eguia, M. R. R., & Doyle, R. W. (1992). Genotype-environment interaction in the response of three strains of Nile tilapia to poor nutrition. Aquaculture, 108(1–2), 1–12.en
dc.identifier.issn0044-8486
dc.identifier.urihttp://hdl.handle.net/10862/1394
dc.description.abstractExperiments were conducted to determine the effects of poor nutrition on the growth of three Oreochromis niloticus strains fed protein-deficient diets. Four-week-old fry from the three "test" strains were paired with a fourth "reference" strain of tilapia (red) of the same size and stocked in 60-1 aquaria. The treatment lasted 6 weeks, with fish being fed commercial fish feed crumbles for the first and last 2-week periods and rice bran during weeks 3 and 4. Control fish were fed commercial diet throughout. Both control and treatment fish were fed at 20% of fish biomass per day. Lengths and weights were measured every 2 weeks. Significant strain effects were noted when the growth of test fish over the whole experimental period was analysed by analysis of covariance using the reference fish growth as a concomitant variable. The relative growth of the three test strains differed at each feeding phase. The NIFI strain grew best during the commercial feed phases, the Israel strain performed best during the rice bran phase while the CLSU strain, regardless of the type of nutritional environment, usually ranked last. Different performance rankings at each feeding phase represent strong genotype X environment interaction among these commercially important lines. This was statistically confirmed by analysis of covariance of the growth of the Israel and NIFI strains during the different feeding phases using the reference strain as a covariate.en
dc.language.isoenen
dc.publisherElsevieren
dc.subjectOreochromis niloticusen
dc.titleGenotype environment interaction in the response of three strains of Nile tilapia to poor nutritionen
dc.typeArticleen
dc.citation.volume108
dc.citation.issue1-2
dc.citation.spage1
dc.citation.epage12
dc.citation.journalTitleAquacultureen
dc.subject.asfadieten
dc.subject.asfaenvironmental factorsen
dc.subject.asfafeeding experimentsen
dc.subject.asfafish cultureen
dc.subject.asfagenotypesen
dc.subject.asfagrowthen
dc.subject.asfanutritionen
dc.subject.asfanutritive valueen
dc.subject.asfaprotein deficienciesen
dc.subject.asfaselective breedingen
dc.subject.asfayieldsen
dc.identifier.doi10.1016/0044-8486(92)90314-B


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