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

Detalhes bibliográficos
Autor(a) principal: Sato, Joyce
Data de Publicação: 2020
Outros Autores: Merenda, Mônica Estela Zambon, Uemoto, Aline Terumi, Dos Santos, Mateus Pereira, Barion, Mariana Regina Lingiardi, Carciofi, Aulus Cavalieri [UNESP], de Paula Dorigam, Juliano César [UNESP], Ribeiro, Leonir Bueno, Vasconcellos, Ricardo Souza
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1080/1745039X.2020.1797433
http://hdl.handle.net/11449/202041
Resumo: The 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.
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spelling Modelling of sulphur amino acid requirements and nitrogen endogenous losses in kittenscatscystineGöttingen methodkittensmethioninenitrogen balancerequirementsThe 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.Department of Animal Science State University of MaringáVeterinary PhysicianDepartment of Clinical and Veterinary Surgery School of Agricultural and Veterinarian Science São Paulo State University (UNESPDepartment of Clinical and Veterinary Surgery School of Agricultural and Veterinarian Science São Paulo State University (UNESPState University of MaringáVeterinary PhysicianUniversidade Estadual Paulista (Unesp)Sato, JoyceMerenda, Mônica Estela ZambonUemoto, Aline TerumiDos Santos, Mateus PereiraBarion, Mariana Regina LingiardiCarciofi, Aulus Cavalieri [UNESP]de Paula Dorigam, Juliano César [UNESP]Ribeiro, Leonir BuenoVasconcellos, Ricardo Souza2020-12-12T02:48:20Z2020-12-12T02:48:20Z2020-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1080/1745039X.2020.1797433Archives of Animal Nutrition.1477-28171745-039Xhttp://hdl.handle.net/11449/20204110.1080/1745039X.2020.17974332-s2.0-85089779714Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengArchives of Animal Nutritioninfo:eu-repo/semantics/openAccess2024-06-06T14:10:09Zoai:repositorio.unesp.br:11449/202041Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T19:06:22.372423Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Modelling of sulphur amino acid requirements and nitrogen endogenous losses in kittens
title Modelling of sulphur amino acid requirements and nitrogen endogenous losses in kittens
spellingShingle Modelling of sulphur amino acid requirements and nitrogen endogenous losses in kittens
Sato, Joyce
cats
cystine
Göttingen method
kittens
methionine
nitrogen balance
requirements
title_short Modelling of sulphur amino acid requirements and nitrogen endogenous losses in kittens
title_full Modelling of sulphur amino acid requirements and nitrogen endogenous losses in kittens
title_fullStr Modelling of sulphur amino acid requirements and nitrogen endogenous losses in kittens
title_full_unstemmed Modelling of sulphur amino acid requirements and nitrogen endogenous losses in kittens
title_sort Modelling of sulphur amino acid requirements and nitrogen endogenous losses in kittens
author Sato, Joyce
author_facet Sato, Joyce
Merenda, Mônica Estela Zambon
Uemoto, Aline Terumi
Dos Santos, Mateus Pereira
Barion, Mariana Regina Lingiardi
Carciofi, Aulus Cavalieri [UNESP]
de Paula Dorigam, Juliano César [UNESP]
Ribeiro, Leonir Bueno
Vasconcellos, Ricardo Souza
author_role author
author2 Merenda, Mônica Estela Zambon
Uemoto, Aline Terumi
Dos Santos, Mateus Pereira
Barion, Mariana Regina Lingiardi
Carciofi, Aulus Cavalieri [UNESP]
de Paula Dorigam, Juliano César [UNESP]
Ribeiro, Leonir Bueno
Vasconcellos, Ricardo Souza
author2_role author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv State University of Maringá
Veterinary Physician
Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Sato, Joyce
Merenda, Mônica Estela Zambon
Uemoto, Aline Terumi
Dos Santos, Mateus Pereira
Barion, Mariana Regina Lingiardi
Carciofi, Aulus Cavalieri [UNESP]
de Paula Dorigam, Juliano César [UNESP]
Ribeiro, Leonir Bueno
Vasconcellos, Ricardo Souza
dc.subject.por.fl_str_mv cats
cystine
Göttingen method
kittens
methionine
nitrogen balance
requirements
topic cats
cystine
Göttingen method
kittens
methionine
nitrogen balance
requirements
description The 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.
publishDate 2020
dc.date.none.fl_str_mv 2020-12-12T02:48:20Z
2020-12-12T02:48:20Z
2020-01-01
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.1080/1745039X.2020.1797433
Archives of Animal Nutrition.
1477-2817
1745-039X
http://hdl.handle.net/11449/202041
10.1080/1745039X.2020.1797433
2-s2.0-85089779714
url http://dx.doi.org/10.1080/1745039X.2020.1797433
http://hdl.handle.net/11449/202041
identifier_str_mv Archives of Animal Nutrition.
1477-2817
1745-039X
10.1080/1745039X.2020.1797433
2-s2.0-85089779714
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Archives of Animal Nutrition
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
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