Growth performance and metabolic responses of Nile tilapia fed diets with different protein to energy ratios

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorInterdisciplinary Centre of Marine and Environmental Research (CIIMAR)-
Autor(es): dc.contributorFaculty of Sciences of University of Oporto (FCUP)-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorState University of Ponta Grossa-
Autor(es): dc.creatorPeres, H.-
Autor(es): dc.creatorFreitas, J. M.A.-
Autor(es): dc.creatorCarvalho, P. L.P.-
Autor(es): dc.creatorFuruya, W. M.-
Autor(es): dc.creatorSatori, M. M.P.-
Autor(es): dc.creatorOliva-Teles, A.-
Autor(es): dc.creatorPezzato, L. E.-
Autor(es): dc.creatorBarros, M. M.-
Data de aceite: dc.date.accessioned2025-08-21T20:33:28Z-
Data de disponibilização: dc.date.available2025-08-21T20:33:28Z-
Data de envio: dc.date.issued2022-04-28-
Data de envio: dc.date.issued2022-04-28-
Data de envio: dc.date.issued2022-01-29-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.aquaculture.2021.737493-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/222487-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/222487-
Descrição: dc.descriptionThe effect of dietary digestible protein to digestible energy (DP/DE) ratio on the growth performance and metabolic responses of Nile tilapia juveniles was evaluated. Five experimental diets were formulated with increasing DP/DE ratio (13.2, 15.5, 18.4, 20.0, and 22.6 mg kJ−1) and fed to eight replicates of Nile tilapia (initial body weight of 9.3 g) for 110 days. The apparent digestibility coefficients of the diets were determined in a parallel trial. Digestibility coefficients of dry matter, crude protein, and crude energy linearly decreased with increasing dietary P/E ratios. A quadratic effect of dietary DP/DE ratio on growth performance was observed, and maximum weight gain (g kg−1 day−1) or daily growth increment was attained with a dietary DP/DE ratio of 16.5 and 17.2 (mg kJ−1), respectively. Feed intake and energy retention (kJ ABW kg−1 day−1) linearly decreased, and feed efficiency linearly increased with increased dietary DP/DE ratio. The increase of dietary DP/DE ratio decreased the whole body, muscle, hepatic, and visceral lipid content and increased the fillet yield. The decrease of dietary DP/DE linearly increased nitrogen retention (% N intake) and whole-body lipid deposition through the reduction of amino acid catabolism (GDH and ALAT) and gluconeogenesis (FBPase) related enzymes and the increase of glycolysis (GK and HK) and lipogenesis- (G6PDH and ME) related enzymes. In conclusion, a dietary DP/DE ratio of 16.5–17.2 mg kJ−1 promoted the maximum growth performance of Nile tilapia juveniles. However, further studies are required to evaluate if a fine-tuning of the protein amino acid profile would allow a further reduction of the optimum dietary DP/DE ratio. Metabolic response to the decrease in dietary DP/DE levels suggested activation of glycolysis and lipogenesis and inhibition of amino acid catabolism and gluconeogenesis, highlighting the high capacity of Nile tilapia for metabolic utilization of dietary carbohydrates.-
Descrição: dc.descriptionFundação para a Ciência e a Tecnologia-
Descrição: dc.descriptionInterdisciplinary Centre of Marine and Environmental Research (CIIMAR), Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos 4450-208-
Descrição: dc.descriptionDepartment of Biology Faculty of Sciences of University of Oporto (FCUP)-
Descrição: dc.descriptionDepartment of Breeding and Animal Nutrition UNESP Universidade Estadual Paulista “Júlio de Mesquita Filho”-
Descrição: dc.descriptionDepartment of Animal Science State University of Ponta Grossa-
Descrição: dc.descriptionDepartment of Production and Plant Breeding UNESP Universidade Estadual Paulista “Júlio de Mesquita Filho”-
Descrição: dc.descriptionDepartment of Breeding and Animal Nutrition UNESP Universidade Estadual Paulista “Júlio de Mesquita Filho”-
Descrição: dc.descriptionDepartment of Production and Plant Breeding UNESP Universidade Estadual Paulista “Júlio de Mesquita Filho”-
Descrição: dc.descriptionFundação para a Ciência e a Tecnologia: UIDB/04423/2020-
Idioma: dc.languageen-
Relação: dc.relationAquaculture-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectDigestible protein/digestible energy ratio-
Palavras-chave: dc.subjectGrowth performance-
Palavras-chave: dc.subjectHepatic enzymes activity-
Palavras-chave: dc.subjectIntermediary metabolism-
Título: dc.titleGrowth performance and metabolic responses of Nile tilapia fed diets with different protein to energy ratios-
Tipo de arquivo: dc.typelivro digital-
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