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dc.creatorLago, Aline de Assis-
dc.creatorRezende, Tiago Teruel-
dc.creatorDias, Marco Aurélio Dessimoni-
dc.creatorFreitas, Rilke Tadeu Fonseca de-
dc.creatorHilsdorf, Alexandre Wagner Silva-
dc.date.accessioned2019-09-05T18:01:16Z-
dc.date.available2019-09-05T18:01:16Z-
dc.date.issued2017-04-01-
dc.identifier.citationLAGO, A. de A. et al. The development of genetically improved red tilapia lines through the backcross breeding of two Oreochromis niloticus strains. Aquaculture, v. 472, p. 17-22, 1 Apr. 2017. Suplemento 1.pt_BR
dc.identifier.urihttps://www.sciencedirect.com/science/article/pii/S0044848616303465#!pt_BR
dc.identifier.urihttp://repositorio.ufla.br/jspui/handle/1/36633-
dc.description.abstractIn order to develop a crossbred of Oreochromis niloticus with a high growth rate and coloration, a backcross breeding program was developed using Red-Stirling and Chitralada strains with 50%, 75%, and 87.5% of genic proportion to Chitralada. Seven genetic groups were obtained from Chitralada (C) and Red-Stirling (R): the hybrids F1, fish-female Red-Stirling × fish-male Chitralada (RC), and its reciprocal (CR), and the backcross breeding (BB1), fish-female CR × fish-male Chitralada (CR × C), and its reciprocal (C × CR) and BB2 [C(C × CR)]. Growth curves were adjusted using an exponential model for females and males. The curves show a distinct difference among genetic groups and between genders based on the backcross breddingapproach. The best ranking for red females was observed in BB1 [C × (CR)]. The gain observed is due to the action of a genetic additive effect of Chitralada (42.90 g), a maternal effect of Chitralada (41.48 g), and a non-additive effect, which is attributed to paternal heterosis (11.41 g). While the best ranking for red males was found in BB2, The observed gain may be attributed to an additive genetic effect of Chitralada (74.04 g) and maternal effect of Chitralada (57.68 g). Survival among females was average. Among males, a higher mortality in the Red-Stirling group was observed compared to the other groups. These results indicate that the backcross breeding program can be used to develop genetic lines of red tilapia for further genetic breeding programs mainly exploring paternal heterosis to produce dams.pt_BR
dc.languageen_USpt_BR
dc.publisherElsevierpt_BR
dc.rightsrestrictAccesspt_BR
dc.sourceAquaculturept_BR
dc.subjectHeterosispt_BR
dc.subjectQuantitative geneticspt_BR
dc.subjectRecurrent backcrosspt_BR
dc.subjectGene introgressionpt_BR
dc.subjectHeterosept_BR
dc.subjectTilapia - Genetic improvementpt_BR
dc.subjectGenética quantitativapt_BR
dc.subjectBackcross recorrentept_BR
dc.subjectIntrogressão gênicapt_BR
dc.titleThe development of genetically improved red tilapia lines through the backcross breeding of two Oreochromis niloticus strainspt_BR
dc.typeArtigopt_BR
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