Individual responses of growing pigs to threonine intake
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/rbz4720170143 http://hdl.handle.net/11449/166011 |
Resumo: | A nitrogen balance test was performed to evaluate the individual responses of growing pigs to threonine intake. Eight commercial barrows were used (body weight ranging from 15 to 20 kg). A dose-response study was performed, in which the threonine supply increased in seven equidistant steps (the seven dietary threonine levels ranged from 50 to 120% of the requirements) every three days for each pig. The levels of all other amino acids were 20% higher than the tested amino acid. Nitrogen retention as a function of threonine intake was calculated per individual and per group (NLIN and NLMixed, respectively) using a linear plateau model. The highest break point value was 42.42 g of threonine intake (the most demanding individual), whereas the lowest value was 34.16 g (the least demanding individual), corresponding to a difference of 19%. In terms of N retention, the highest plateau value was 66.71 g and the lowest was 49.48 g, with a difference of 25%. There was no significant correlation between slope and plateau values or between slope and break point values. When using the model in which all parameters were random effects, the variations in threonine intake and nitrogen retention were 1.68 +/- 1.30 and 0.01 +/- 0.10 g, respectively, and no variance in the slope of the curve was detected. The average daily threonine intake values for the maximum response obtained in the group, as calculated by the NLIN and NLMixed procedures, were 13.96 and 14.02 g/day, respectively. The threonine intake for the maximum N retention between individuals ranged from 34.16 to 42.42 g, corresponding to a difference of 19%. The current recommended intake to optimize N retention is 14.02 g/day. The group responses obtained by the NLMixed procedures are very similar to those estimated by the NLIN procedure (all individuals). |
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Individual responses of growing pigs to threonine intakeamino acidsindividualsnitrogen retentionrequirementsvariabilityA nitrogen balance test was performed to evaluate the individual responses of growing pigs to threonine intake. Eight commercial barrows were used (body weight ranging from 15 to 20 kg). A dose-response study was performed, in which the threonine supply increased in seven equidistant steps (the seven dietary threonine levels ranged from 50 to 120% of the requirements) every three days for each pig. The levels of all other amino acids were 20% higher than the tested amino acid. Nitrogen retention as a function of threonine intake was calculated per individual and per group (NLIN and NLMixed, respectively) using a linear plateau model. The highest break point value was 42.42 g of threonine intake (the most demanding individual), whereas the lowest value was 34.16 g (the least demanding individual), corresponding to a difference of 19%. In terms of N retention, the highest plateau value was 66.71 g and the lowest was 49.48 g, with a difference of 25%. There was no significant correlation between slope and plateau values or between slope and break point values. When using the model in which all parameters were random effects, the variations in threonine intake and nitrogen retention were 1.68 +/- 1.30 and 0.01 +/- 0.10 g, respectively, and no variance in the slope of the curve was detected. The average daily threonine intake values for the maximum response obtained in the group, as calculated by the NLIN and NLMixed procedures, were 13.96 and 14.02 g/day, respectively. The threonine intake for the maximum N retention between individuals ranged from 34.16 to 42.42 g, corresponding to a difference of 19%. The current recommended intake to optimize N retention is 14.02 g/day. The group responses obtained by the NLMixed procedures are very similar to those estimated by the NLIN procedure (all individuals).Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Univ Estadual Paulista, Fac Ciencias Agr & Vet, Jaboticabal, SP, BrazilUniv Fed Rio Grande do Sul, Fac Agron, Porto Alegre, RS, BrazilUniv Estadual Paulista, Fac Ciencias Agr & Vet, Jaboticabal, SP, BrazilFAPESP: 2012/03781-0Revista Brasileira Zootecnia Brazilian Journal Animal SciUniversidade Estadual Paulista (Unesp)Univ Fed Rio Grande do SulIsola, Renan Di Giovanni [UNESP]Hauschild, Luciano [UNESP]Perondi, Dani [UNESP]Andretta, InesGobi, Jaqueline de Paula [UNESP]Remus, Aline [UNESP]Veira, Alini Mari [UNESP]2018-11-29T07:23:40Z2018-11-29T07:23:40Z2018-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article7application/pdfhttp://dx.doi.org/10.1590/rbz4720170143Revista Brasileira De Zootecnia-brazilian Journal Of Animal Science. Vicosa-mg: Revista Brasileira Zootecnia Brazilian Journal Animal Sci, v. 47, 7 p., 2018.1806-9290http://hdl.handle.net/11449/16601110.1590/rbz4720170143S1516-35982018000100500WOS:000425372000001S1516-35982018000100500.pdfWeb of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengRevista Brasileira De Zootecnia-brazilian Journal Of Animal Scienceinfo:eu-repo/semantics/openAccess2023-11-13T06:16:03Zoai:repositorio.unesp.br:11449/166011Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-11-13T06:16:03Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Individual responses of growing pigs to threonine intake |
title |
Individual responses of growing pigs to threonine intake |
spellingShingle |
Individual responses of growing pigs to threonine intake Isola, Renan Di Giovanni [UNESP] amino acids individuals nitrogen retention requirements variability |
title_short |
Individual responses of growing pigs to threonine intake |
title_full |
Individual responses of growing pigs to threonine intake |
title_fullStr |
Individual responses of growing pigs to threonine intake |
title_full_unstemmed |
Individual responses of growing pigs to threonine intake |
title_sort |
Individual responses of growing pigs to threonine intake |
author |
Isola, Renan Di Giovanni [UNESP] |
author_facet |
Isola, Renan Di Giovanni [UNESP] Hauschild, Luciano [UNESP] Perondi, Dani [UNESP] Andretta, Ines Gobi, Jaqueline de Paula [UNESP] Remus, Aline [UNESP] Veira, Alini Mari [UNESP] |
author_role |
author |
author2 |
Hauschild, Luciano [UNESP] Perondi, Dani [UNESP] Andretta, Ines Gobi, Jaqueline de Paula [UNESP] Remus, Aline [UNESP] Veira, Alini Mari [UNESP] |
author2_role |
author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Univ Fed Rio Grande do Sul |
dc.contributor.author.fl_str_mv |
Isola, Renan Di Giovanni [UNESP] Hauschild, Luciano [UNESP] Perondi, Dani [UNESP] Andretta, Ines Gobi, Jaqueline de Paula [UNESP] Remus, Aline [UNESP] Veira, Alini Mari [UNESP] |
dc.subject.por.fl_str_mv |
amino acids individuals nitrogen retention requirements variability |
topic |
amino acids individuals nitrogen retention requirements variability |
description |
A nitrogen balance test was performed to evaluate the individual responses of growing pigs to threonine intake. Eight commercial barrows were used (body weight ranging from 15 to 20 kg). A dose-response study was performed, in which the threonine supply increased in seven equidistant steps (the seven dietary threonine levels ranged from 50 to 120% of the requirements) every three days for each pig. The levels of all other amino acids were 20% higher than the tested amino acid. Nitrogen retention as a function of threonine intake was calculated per individual and per group (NLIN and NLMixed, respectively) using a linear plateau model. The highest break point value was 42.42 g of threonine intake (the most demanding individual), whereas the lowest value was 34.16 g (the least demanding individual), corresponding to a difference of 19%. In terms of N retention, the highest plateau value was 66.71 g and the lowest was 49.48 g, with a difference of 25%. There was no significant correlation between slope and plateau values or between slope and break point values. When using the model in which all parameters were random effects, the variations in threonine intake and nitrogen retention were 1.68 +/- 1.30 and 0.01 +/- 0.10 g, respectively, and no variance in the slope of the curve was detected. The average daily threonine intake values for the maximum response obtained in the group, as calculated by the NLIN and NLMixed procedures, were 13.96 and 14.02 g/day, respectively. The threonine intake for the maximum N retention between individuals ranged from 34.16 to 42.42 g, corresponding to a difference of 19%. The current recommended intake to optimize N retention is 14.02 g/day. The group responses obtained by the NLMixed procedures are very similar to those estimated by the NLIN procedure (all individuals). |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-11-29T07:23:40Z 2018-11-29T07:23:40Z 2018-01-01 |
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.none.fl_str_mv |
|
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1590/rbz4720170143 Revista Brasileira De Zootecnia-brazilian Journal Of Animal Science. Vicosa-mg: Revista Brasileira Zootecnia Brazilian Journal Animal Sci, v. 47, 7 p., 2018. 1806-9290 http://hdl.handle.net/11449/166011 10.1590/rbz4720170143 S1516-35982018000100500 WOS:000425372000001 S1516-35982018000100500.pdf |
identifier_str_mv |
Revista Brasileira De Zootecnia-brazilian Journal Of Animal Science. Vicosa-mg: Revista Brasileira Zootecnia Brazilian Journal Animal Sci, v. 47, 7 p., 2018. 1806-9290 10.1590/rbz4720170143 S1516-35982018000100500 WOS:000425372000001 S1516-35982018000100500.pdf |
url |
http://dx.doi.org/10.1590/rbz4720170143 http://hdl.handle.net/11449/166011 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Revista Brasileira De Zootecnia-brazilian Journal Of Animal Science |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
7 application/pdf |
dc.publisher.none.fl_str_mv |
Revista Brasileira Zootecnia Brazilian Journal Animal Sci |
publisher.none.fl_str_mv |
Revista Brasileira Zootecnia Brazilian Journal Animal Sci |
dc.source.none.fl_str_mv |
Web of Science 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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1799964925525753856 |