Modelling of sulphur amino acid requirements and nitrogen endogenous losses in kittens

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorState University of Maringá-
Autor(es): dc.contributorVeterinary Physician-
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.creatorSato, Joyce-
Autor(es): dc.creatorMerenda, Mônica Estela Zambon-
Autor(es): dc.creatorUemoto, Aline Terumi-
Autor(es): dc.creatorDos Santos, Mateus Pereira-
Autor(es): dc.creatorBarion, Mariana Regina Lingiardi-
Autor(es): dc.creatorCarciofi, Aulus Cavalieri [UNESP]-
Autor(es): dc.creatorde Paula Dorigam, Juliano César [UNESP]-
Autor(es): dc.creatorRibeiro, Leonir Bueno-
Autor(es): dc.creatorVasconcellos, Ricardo Souza-
Data de aceite: dc.date.accessioned2022-02-22T00:35:16Z-
Data de disponibilização: dc.date.available2022-02-22T00:35:16Z-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2019-12-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1080/1745039X.2020.1797433-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/202041-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/202041-
Descrição: dc.descriptionThe objective of this study was to estimate the sulphur amino acid (methionine + cystine) requirements and nitrogen endogenous losses in kittens aged 150 to 240 d. Thirty-six cats were distributed in six treatments (six cats per treatment) consisting of different concentrations of methionine + cystine (M + C): T1, 6.5 g/kg; T2, 8.8 g/kg; T3, 11.3 g/kg; T4, 13.6 g/kg; T5, 16.0 g/kg; and control, 6.5 g/kg. Diets were formulated by serial dilution of T5 (a diet relatively deficient in M + C but containing high protein concentrations) with a minimal nitrogen diet (MND). Thus, crude protein and amino acid concentrations in diets T1–T5 decreased by the same factor. The control diet was the T1 diet supplemented with adequate concentrations of M + C (6.5 g/kg; 8.8 g/kg; 11.3 g/kg; 13.6 g/kg and 16.0 g/kg). All diets were based on ingredients commonly used in extruded cat diets. Digestibility assays were performed for the determination of nitrogen balance. Nitrogen intake (NI) and nitrogen excretion (NEX) results data were fitted with an exponential equation to estimate nitrogen maintenance requirement (NMR), theoretical maximum for daily nitrogen retention (NRmaxT), and protein quality (b). M + C requirements were calculated from the limiting amino acid intake (LAAI) equation assuming a nitrogen retention of 45 to 65% NRmaxT. The NMR of kittens aged 150, 195, and 240 d was estimated at 595, 559, and 455 mg/kg body weight (BW)0.67 per day, respectively, and M + C requirements were estimated at 517, 664, and 301 mg/kg BW0.67 per day, respectively.-
Descrição: dc.descriptionDepartment of Animal Science State University of Maringá-
Descrição: dc.descriptionVeterinary Physician-
Descrição: dc.descriptionDepartment of Clinical and Veterinary Surgery School of Agricultural and Veterinarian Science São Paulo State University (UNESP-
Descrição: dc.descriptionDepartment of Clinical and Veterinary Surgery School of Agricultural and Veterinarian Science São Paulo State University (UNESP-
Idioma: dc.languageen-
Relação: dc.relationArchives of Animal Nutrition-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectcats-
Palavras-chave: dc.subjectcystine-
Palavras-chave: dc.subjectGöttingen method-
Palavras-chave: dc.subjectkittens-
Palavras-chave: dc.subjectmethionine-
Palavras-chave: dc.subjectnitrogen balance-
Palavras-chave: dc.subjectrequirements-
Título: dc.titleModelling of sulphur amino acid requirements and nitrogen endogenous losses in kittens-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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