Digestible protein requirements for maintenance, growth, and efficiency of protein utilization in pacu (Piaractus mesopotamicus) juveniles: An exponential nitrogen utilization model

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Autor(es): dc.contributorBrazil University-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorMansano, Cleber F.M.-
Autor(es): dc.creatorSilva, Edney P.-
Autor(es): dc.creatorKhan, Kifayat U.-
Autor(es): dc.creatorMacente, Beatrice I.-
Autor(es): dc.creatorNascimento, Thiago M.T.-
Autor(es): dc.creatorSakomura, Nilva K.-
Autor(es): dc.creatorFernandes, João B.K.-
Autor(es): dc.creatorTakahashi, Leonardo S.-
Data de aceite: dc.date.accessioned2025-08-21T17:09:22Z-
Data de disponibilização: dc.date.available2025-08-21T17:09:22Z-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2020-12-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.3856/vol49-issue4-fulltext-2678-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/229625-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/229625-
Descrição: dc.descriptionThe present study aimed to estimate digestible protein (DP) requirements for maintenance and growth and assess the efficiency of protein utilization in pacu (Piaractus mesopotamicus) juveniles. A complete randomized design consisted of seven treatments, and five replicates (tanks) per treatment was used. After a one-week acclimation period, 350 pacu juveniles of 27.48 ± 1.8 g (initial average body weight-BW) were equally distributed among 35 tanks (10 fish per tank) of 450 L. Fish were fed with seven graded digestible protein levels (64.5, 111.8, 164.6, 217.1, 264.4, 316.2 and 369.5 g kg-1) three times a day until apparent satiation for 120 days. The monomolecular model parameters including nitrogen maintenance requirement (NMR) (37.76 mg BW0.67 kg-1 d-1), daily nitrogen deposition (ND) (194.8 mg BW0.67 kg-1 d-1), and protein intakes (based on metabolic BW) of 1638, 1902, and 2241 mg kg-1BW0.67 d-1 for 75, 80 and 85% maximum theoretical nitrogen retention (NRmaxT), respectively and the efficiency of protein utilization (529×10-6) were estimated through the relationship between nitrogen intake (NI) and ND. The digestible protein requirements for 75, 80, and 85% of NRmaxTwere estimated as 187, 217, and 256 g kg-1 respectively by the monomolecular model based on the daily feed intake of 2% of live BW of pacu juveniles.-
Descrição: dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionBrazil University, Campus Fernandópolis-
Descrição: dc.descriptionFaculty of Agricultural and Veterinary Sciences (FCAV) São Paulo State University (UNESP)-
Descrição: dc.descriptionAquaculture Center São Paulo State University (UNESP)-
Descrição: dc.descriptionCollege of Agricultural and Technological Sciences (FCAT) São Paulo State University (UNESP)-
Descrição: dc.descriptionFaculty of Agricultural and Veterinary Sciences (FCAV) São Paulo State University (UNESP)-
Descrição: dc.descriptionAquaculture Center São Paulo State University (UNESP)-
Descrição: dc.descriptionCollege of Agricultural and Technological Sciences (FCAT) São Paulo State University (UNESP)-
Descrição: dc.descriptionCAPES: 1525577-
Descrição: dc.descriptionFAPESP: 2013/25761-4-
Descrição: dc.descriptionFAPESP: 2016/11016-3-
Formato: dc.format608-619-
Idioma: dc.languageen-
Relação: dc.relationLatin American Journal of Aquatic Research-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectFeed intake-
Palavras-chave: dc.subjectMaintenance requirement-
Palavras-chave: dc.subjectMonomolecular model-
Palavras-chave: dc.subjectNitrogen deposition-
Palavras-chave: dc.subjectPacu nutrition-
Palavras-chave: dc.subjectPiaractus mesopotamicus-
Título: dc.titleDigestible protein requirements for maintenance, growth, and efficiency of protein utilization in pacu (Piaractus mesopotamicus) juveniles: An exponential nitrogen utilization model-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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