Amino acid reduction in broiler diets supplemented with phytase and elaborated according to different nutritional plans
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFLA |
Texto Completo: | http://repositorio.ufla.br/jspui/handle/1/42469 |
Resumo: | The need for suitable diets in chickens, considering the ideal protein concept associated with phytase, is important in order to improve the productivity of birds. The aim of this study was to assess the need for the correction of amino acid levels in the diets of broilers, by using different combinations of crude protein (CP) supplemented with phytase. For performance, eight days old Cobb 875 broiler chicks, with initial body weights of 155 ± 1.4g were used. The birds were distributed in a completely randomised design with seven treatments (nutritional plans) and five replicates of 25 birds. For the metabolism trial, 300 birds were selected which were also distributed using the same design, but with five, four and three birds per experimental stage: 8-21 days, 22-35 days and 36- 42 days. The nutritional plans consisted of different combinations of CP in diets with reduced calcium and phosphorus, supplemented with phytase and amino acids. The reduction of amino acids in diets with reduced levels of CP resulted in an increased intake, feed conversion and abdominal fat level, and decreased the yield of thigh + drumstick. The inclusion of phytase reduced the excretion of calcium and phosphorus, but increased nitrogen excretion when the CP was not reduced. As a result, this study concluded that the reduction of amino acids to 3.5%, supplemented with phytase and prepared according to a nutritional plan does not improve the performance and carcass characteristics of broilers, although it may reduce the emission of polluting elements by excreta. |
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Amino acid reduction in broiler diets supplemented with phytase and elaborated according to different nutritional plansRedução de aminoácidos em rações para frangos de corte suplementadas com fitase e elaboradas de acordo com diferentes planos nutricionaisCarcass characteristicsIdeal proteinNutritionPerformanceCaracterísticas de carcaçaProteína idealNutriçãoDesempenhoThe need for suitable diets in chickens, considering the ideal protein concept associated with phytase, is important in order to improve the productivity of birds. The aim of this study was to assess the need for the correction of amino acid levels in the diets of broilers, by using different combinations of crude protein (CP) supplemented with phytase. For performance, eight days old Cobb 875 broiler chicks, with initial body weights of 155 ± 1.4g were used. The birds were distributed in a completely randomised design with seven treatments (nutritional plans) and five replicates of 25 birds. For the metabolism trial, 300 birds were selected which were also distributed using the same design, but with five, four and three birds per experimental stage: 8-21 days, 22-35 days and 36- 42 days. The nutritional plans consisted of different combinations of CP in diets with reduced calcium and phosphorus, supplemented with phytase and amino acids. The reduction of amino acids in diets with reduced levels of CP resulted in an increased intake, feed conversion and abdominal fat level, and decreased the yield of thigh + drumstick. The inclusion of phytase reduced the excretion of calcium and phosphorus, but increased nitrogen excretion when the CP was not reduced. As a result, this study concluded that the reduction of amino acids to 3.5%, supplemented with phytase and prepared according to a nutritional plan does not improve the performance and carcass characteristics of broilers, although it may reduce the emission of polluting elements by excreta.A necessidade de dietas adequadas para frangos, considerando o conceito de proteína ideal associada à fitase, é importante para melhorar a produtividade das aves. Objetivou-se avaliar a necessidade de correção dos níveis de aminoácidos em rações para frangos de corte, formuladas em diferentes combinações de proteína bruta (PB) e suplementadas com fitase. Para o desempenho, foram utilizados 875 pintos de corte Cobb, com oito dias de idade e peso inicial de 155±1,4g. As aves foram distribuídas em delineamento inteiramente casualizado, com sete tratamentos (planos nutricionais) e cinco repetições de 25 aves cada. Para o ensaio de metabolismo, foram selecionadas 300 aves que foram também distribuídas no mesmo delineamento, porém com cinco, quatro e três aves por parcela experimental nas fases de 8 a 21, 22 a 35 e 36 a 42 dias. Os planos nutricionais consistiram em diferentes combinações de PB em rações com cálcio e fósforo reduzidos, suplementadas com fitase e aminoácidos. A redução de aminoácidos em dietas com teores reduzidos de PB aumentou o consumo, a conversão alimentar e a gordura abdominal e diminuiu o rendimento de coxa + sobrecoxa. A inclusão de fitase reduziu a excreção de cálcio e de fósforo, porém aumentou a de nitrogênio quando a PB não foi reduzida. Conclui-se que a redução de aminoácidos em 3,5% em rações para frangos de corte suplementadas com fitase e elaboradas segundo um plano nutricional não melhora o desempenho e as características de carcaça das aves, embora possa reduzir a emissão de elementos poluentes pelas excretas.Editora UFLA (Editora da Universidade Federal de Lavras)2020-08-18T10:31:00Z2020-08-18T10:31:00Z2012-04info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfOLIVEIRA, J. E. F. et al. Amino acid reduction in broiler diets supplemented with phytase and elaborated according to different nutritional plans. Ciência e Agrotecnologia, Lavras, v. 36, n. 2, p. 224-232, Mar./Apr. 2012. DOI: 10.1590/S1413-70542012000200012.http://repositorio.ufla.br/jspui/handle/1/42469Ciência e Agrotecnologiareponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLAAttribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessOliveira, Jeferson Eder FerreiraRodrigues, Paulo BorgesAlvarenga, Renata RibeiroZangeronimo, Márcio GilbertoLima, Gustavo Freire Resendeeng2020-08-18T10:31:00Zoai:localhost:1/42469Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2020-08-18T10:31Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false |
dc.title.none.fl_str_mv |
Amino acid reduction in broiler diets supplemented with phytase and elaborated according to different nutritional plans Redução de aminoácidos em rações para frangos de corte suplementadas com fitase e elaboradas de acordo com diferentes planos nutricionais |
title |
Amino acid reduction in broiler diets supplemented with phytase and elaborated according to different nutritional plans |
spellingShingle |
Amino acid reduction in broiler diets supplemented with phytase and elaborated according to different nutritional plans Oliveira, Jeferson Eder Ferreira Carcass characteristics Ideal protein Nutrition Performance Características de carcaça Proteína ideal Nutrição Desempenho |
title_short |
Amino acid reduction in broiler diets supplemented with phytase and elaborated according to different nutritional plans |
title_full |
Amino acid reduction in broiler diets supplemented with phytase and elaborated according to different nutritional plans |
title_fullStr |
Amino acid reduction in broiler diets supplemented with phytase and elaborated according to different nutritional plans |
title_full_unstemmed |
Amino acid reduction in broiler diets supplemented with phytase and elaborated according to different nutritional plans |
title_sort |
Amino acid reduction in broiler diets supplemented with phytase and elaborated according to different nutritional plans |
author |
Oliveira, Jeferson Eder Ferreira |
author_facet |
Oliveira, Jeferson Eder Ferreira Rodrigues, Paulo Borges Alvarenga, Renata Ribeiro Zangeronimo, Márcio Gilberto Lima, Gustavo Freire Resende |
author_role |
author |
author2 |
Rodrigues, Paulo Borges Alvarenga, Renata Ribeiro Zangeronimo, Márcio Gilberto Lima, Gustavo Freire Resende |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Oliveira, Jeferson Eder Ferreira Rodrigues, Paulo Borges Alvarenga, Renata Ribeiro Zangeronimo, Márcio Gilberto Lima, Gustavo Freire Resende |
dc.subject.por.fl_str_mv |
Carcass characteristics Ideal protein Nutrition Performance Características de carcaça Proteína ideal Nutrição Desempenho |
topic |
Carcass characteristics Ideal protein Nutrition Performance Características de carcaça Proteína ideal Nutrição Desempenho |
description |
The need for suitable diets in chickens, considering the ideal protein concept associated with phytase, is important in order to improve the productivity of birds. The aim of this study was to assess the need for the correction of amino acid levels in the diets of broilers, by using different combinations of crude protein (CP) supplemented with phytase. For performance, eight days old Cobb 875 broiler chicks, with initial body weights of 155 ± 1.4g were used. The birds were distributed in a completely randomised design with seven treatments (nutritional plans) and five replicates of 25 birds. For the metabolism trial, 300 birds were selected which were also distributed using the same design, but with five, four and three birds per experimental stage: 8-21 days, 22-35 days and 36- 42 days. The nutritional plans consisted of different combinations of CP in diets with reduced calcium and phosphorus, supplemented with phytase and amino acids. The reduction of amino acids in diets with reduced levels of CP resulted in an increased intake, feed conversion and abdominal fat level, and decreased the yield of thigh + drumstick. The inclusion of phytase reduced the excretion of calcium and phosphorus, but increased nitrogen excretion when the CP was not reduced. As a result, this study concluded that the reduction of amino acids to 3.5%, supplemented with phytase and prepared according to a nutritional plan does not improve the performance and carcass characteristics of broilers, although it may reduce the emission of polluting elements by excreta. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-04 2020-08-18T10:31:00Z 2020-08-18T10:31:00Z |
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 |
OLIVEIRA, J. E. F. et al. Amino acid reduction in broiler diets supplemented with phytase and elaborated according to different nutritional plans. Ciência e Agrotecnologia, Lavras, v. 36, n. 2, p. 224-232, Mar./Apr. 2012. DOI: 10.1590/S1413-70542012000200012. http://repositorio.ufla.br/jspui/handle/1/42469 |
identifier_str_mv |
OLIVEIRA, J. E. F. et al. Amino acid reduction in broiler diets supplemented with phytase and elaborated according to different nutritional plans. Ciência e Agrotecnologia, Lavras, v. 36, n. 2, p. 224-232, Mar./Apr. 2012. DOI: 10.1590/S1413-70542012000200012. |
url |
http://repositorio.ufla.br/jspui/handle/1/42469 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Editora UFLA (Editora da Universidade Federal de Lavras) |
publisher.none.fl_str_mv |
Editora UFLA (Editora da Universidade Federal de Lavras) |
dc.source.none.fl_str_mv |
Ciência e Agrotecnologia reponame:Repositório Institucional da UFLA instname:Universidade Federal de Lavras (UFLA) instacron:UFLA |
instname_str |
Universidade Federal de Lavras (UFLA) |
instacron_str |
UFLA |
institution |
UFLA |
reponame_str |
Repositório Institucional da UFLA |
collection |
Repositório Institucional da UFLA |
repository.name.fl_str_mv |
Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA) |
repository.mail.fl_str_mv |
nivaldo@ufla.br || repositorio.biblioteca@ufla.br |
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1807835219005276160 |