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dc.creatorPonzoni R. W.
dc.creatorHamzah, A.
dc.creatorTan, S.
dc.creatorKamaruzzaman, N.
dc.date.accessioned2018-11-27T10:53:59Z
dc.date.available2018-11-27T10:53:59Z
dc.date.issued2005
dc.identifierhttp://www.sciencedirect.com/science/article/pii/S0044848605001080
dc.identifier.citationAquaculture 247(1/4): 203-210
dc.identifier.issn0044-8486
dc.identifier.urihttps://hdl.handle.net/20.500.12348/1968
dc.description.abstractGenetic improvement programs can increase the productivity of cultured aquatic species. Their rigorous design requires knowledge about parameters such as herit-ability and correlations among the traits under selection. These parameters enable the estimation of the breeding value of the selection candidates in the population, as well as the prediction of the potential response to selection. In Tilapia the focus of selection programs has been almost exclusively restricted to growth rate. Several estimates of heritability, in particular for live weight and growth rate, can be found in the literature (e.g. Kronert et al., 1989; Oldorf et al., 1989; Gall and Bakar, 2002; Bolivar and Newkirk, 2002). In a strict sense, such genetic parameters are only applicable to the population and the environment where they were obtained. Further¬more, individual estimates are subject to sampling problems and the parameters can change over time, particularly in relatively small populations undergoing selection. Hence, the desirability of having parameter estimates that are directly relevant to the population one is working with. In this paper we present an estimate of heritability for live weight (at approx. seven months of age) in two grow-out environments (cage and pond) for the GIFT (Genetically Improved Farmed Tilapia) strain (Eknath et al., 1993; Bentsen et al., 1998; Eknath and Acosta, 1998). We also estimate the response to selection in harvest weight by three different methods. The effects of environment (cage or pond) and sex on live weight are also discussed.
dc.formatapplication/pdf
dc.languageEn
dc.publisherElsevier
dc.sourceAquaculture
dc.titleGenetic parameters and response to selection for live weight in the GIFT strain of Nile Tilapia (Oreochromis niloticus)
dc.typeJournal Article
dcterms.bibliographicCitationPonzoni R. W. et al. (2005). Genetic parameters and response to selection for live weight in the GIFT strain of Nile Tilapia (Oreochromis niloticus). Aquaculture 247(1/4): 203-210
dc.description.versionPeer Review
cg.coverage.countryMalawi
cg.coverage.regionAfrica
cg.identifier.worldfish619
cg.subject.agrovocgenetics
cg.subject.agrovoctilapia
cg.subject.worldfishGIFT
cg.subject.worldfishsmall-scale aquaculture
cg.identifier.statusLimited access
cg.identifier.ISIindexedISI indexed
cg.contribution.worldfishauthorPonzoni R. W.
cg.description.themeSustainable aquaculture
dc.identifier.doihttps://doi.org/10.1016/j.aquaculture.2005.02.020en_US
cg.identifier.urlhttp://www.sciencedirect.com/science/article/pii/S0044848605001080


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