Please use this identifier to cite or link to this item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1132022
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dc.contributor.authorFREITAS, L. E. L. de
dc.contributor.authorSILVA, T. S. de C.
dc.contributor.authorFRACALOSSI, D. M.
dc.date.accessioned2021-05-26T02:35:13Z-
dc.date.available2021-05-26T02:35:13Z-
dc.date.created2021-05-25
dc.date.issued2021
dc.identifier.citationScientia Agricola, v.78, Suppl., e20200288, 2021.
dc.identifier.issn1678-992X
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1132022-
dc.descriptionThe determination of nutritional requirements, based on diets administered in practice, considers physiological specificities and sustainability are essential to the development of suitable aquaculture technologies for novel fish species. The growth of jundiá (Rhamdia quelen Quoy and Gaimard) juveniles (31.54 ± 4.92 g) fed five diets comprising increasing levels of digestible protein (DP: 24, 29, 34, 39, and 44 %) and digestible energy (DE: 12.13, 13.39, 13.81, 14.64, and 15.06 MJ kg-1) with DP:DE ratios: 20, 22, 25, 27, and 29 g MJ k-1, respectively, was evaluated. Each diet was fed to three groups of 25 fish for 75 days. Regression analysis showed that the different DP:DE ratios affected both growth and economic performance as well as excretion of total ammonia nitrogen. Fish fed diets with DP:DE ratios between 22 and 27 g MJ k-1 achieved a higher daily weight gain, superior apparent net protein utilization, feed conversion rates, and lower feed costs. For the economically viable and environmentally friendly farming of jundiá juveniles in the initial grow-out stage (30 to 80 g average weight), the best DP:DE ratio was 25 g MJ K-1 DP:DE (34.05 % DP and 13.81 MJ kg-1 DE).
dc.language.isoeng
dc.rightsopenAccesseng
dc.subjectDP-DE
dc.titleProtein to energy ratios and cost, performance, and ammonia excretion in juvenile jundiá (Rhamdia quelen), South American catfish.
dc.typeArtigo de periódico
dc.subject.thesagroPeixe
dc.subject.thesagroRhamdia Quelen
dc.subject.thesagroNutrição Animal
dc.subject.thesagroNitrogênio
dc.subject.nalthesaurusCatfish
dc.subject.nalthesaurusExcretion
dc.subject.nalthesaurusNitrogen
dc.subject.nalthesaurusNutritional adequacy
riaa.ainfo.id1132022
riaa.ainfo.lastupdate2021-05-25
dc.identifier.doihttp://doi.org/10.1590/1678-992X-2020-0288
dc.contributor.institutionLUIZ EDUARDO LIMA DE FREITAS, CNPASA; TARCILA SOUZA DE CASTRO SILVA, CPAO; DÉBORA MACHADO FRACALOSSI, UNIVERSIDADE FEDERAL DE SANTA CATARINA.
Appears in Collections:Artigo em periódico indexado (CNPASA)

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