Reduction of inorganic phosphorus levels in broiler rations
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Pesquisa Agropecuária Brasileira (Online) |
Texto Completo: | https://seer.sct.embrapa.br/index.php/pab/article/view/13286 |
Resumo: | Cobb broilers were fed until 56 days of age, to verify the effects of P levels in four treatments constituted of T1 = 100% of the N.R.C. recommendations for total P, T2 = 95%, T3 = 90% and T4 = 85%, on the starting (1-21 days), growing (22-42 days) and finishing (42-56 days) phases, respectively. The following parameters were evaluated: feed intake, weight gain, feed conversion and blood P level. After the broilers were slaughtered (56 days), tibia breaking resistance was evaluated. Calcium and phosphorus from the ashes of the tibia were also determined. Analysis of variance of the data was performed and the differences were compared by Duncan's test. The results allow to condude that for the starting phase (1-21 days) the total P level recommended would be equal to 0.75% (100% N.R.Cj.); for the growing phase (22-42 days) the best performance was obtained with the level of 0.66% (95% N.R.C.), and for the finishing phase (43-56 days) the levels of 0.61% and 0.57% (95% and 90% N.R.C.) presented similar results as to the feed conversion and cost of productionfor a unit of gain. |
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Reduction of inorganic phosphorus levels in broiler rationsRedução dos níveis de fósforo inorgânico na alimentação de frangos de cortediet; feed intake; weight gain; feed conversion; phosphorus leveldieta; consumo de ração; ganho de peso; conversão alimentar; níveis de fósforoCobb broilers were fed until 56 days of age, to verify the effects of P levels in four treatments constituted of T1 = 100% of the N.R.C. recommendations for total P, T2 = 95%, T3 = 90% and T4 = 85%, on the starting (1-21 days), growing (22-42 days) and finishing (42-56 days) phases, respectively. The following parameters were evaluated: feed intake, weight gain, feed conversion and blood P level. After the broilers were slaughtered (56 days), tibia breaking resistance was evaluated. Calcium and phosphorus from the ashes of the tibia were also determined. Analysis of variance of the data was performed and the differences were compared by Duncan's test. The results allow to condude that for the starting phase (1-21 days) the total P level recommended would be equal to 0.75% (100% N.R.Cj.); for the growing phase (22-42 days) the best performance was obtained with the level of 0.66% (95% N.R.C.), and for the finishing phase (43-56 days) the levels of 0.61% and 0.57% (95% and 90% N.R.C.) presented similar results as to the feed conversion and cost of productionfor a unit of gain.Frangos de corte da linhagem Cobb foram alimentados até 56 dias, para verificar os efeitos de níveis de P na dieta, sendo os tratamentos constituídos por: T1 = 100% do P total recomendado pelo N.R.C.; T2 = 95%; T3 = 90% e T4 = 85%, nas dietas inicial (1-21 dias), crescimento (22-42 dias) e final (42-56 dias), respectivamente. Foram avaliados os parâmetros: consumo de ração, ganho de peso, conversão alimentar e nível de P sanguíneo. Após o abate das aves (56 dias), verificou-se a resistência da tíbia à flexão e determinou-se o Ca e o P da cinza da tíbia. Os dados foram submetidos à análise de variância, e as diferenças, comparadas entre si pelo teste de Duncan. Os resultados permitem concluir que para a fase inicial (1-21 dias) o nível de P total recomendado seria igual a 0,75% (100% do N.R.C.); para a fase de crescimento (22-42 dias), o melhor desempenho foi obtido com o nível de 0,66% (95% do N.R.C.); e para a fase final (43-56 dias), os níveis de 0,61 e 0,57% (95 e 90% do N.R.C.) apresentaram similares resultados quanto à conversão alimentar e custos para a produção de uma unidade de ganho.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraCruz, Frank George GuimarãesCosta, Paulo Tabajara C.Lopes, Juarez MorbiniToledo, Salete Pinto de2014-04-17info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/13286Pesquisa Agropecuaria Brasileira; v.25, n.1, jan. 1990; 1-7Pesquisa Agropecuária Brasileira; v.25, n.1, jan. 1990; 1-71678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/13286/7491info:eu-repo/semantics/openAccess2014-04-17T14:24:18Zoai:ojs.seer.sct.embrapa.br:article/13286Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-04-17T14:24:18Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Reduction of inorganic phosphorus levels in broiler rations Redução dos níveis de fósforo inorgânico na alimentação de frangos de corte |
title |
Reduction of inorganic phosphorus levels in broiler rations |
spellingShingle |
Reduction of inorganic phosphorus levels in broiler rations Cruz, Frank George Guimarães diet; feed intake; weight gain; feed conversion; phosphorus level dieta; consumo de ração; ganho de peso; conversão alimentar; níveis de fósforo |
title_short |
Reduction of inorganic phosphorus levels in broiler rations |
title_full |
Reduction of inorganic phosphorus levels in broiler rations |
title_fullStr |
Reduction of inorganic phosphorus levels in broiler rations |
title_full_unstemmed |
Reduction of inorganic phosphorus levels in broiler rations |
title_sort |
Reduction of inorganic phosphorus levels in broiler rations |
author |
Cruz, Frank George Guimarães |
author_facet |
Cruz, Frank George Guimarães Costa, Paulo Tabajara C. Lopes, Juarez Morbini Toledo, Salete Pinto de |
author_role |
author |
author2 |
Costa, Paulo Tabajara C. Lopes, Juarez Morbini Toledo, Salete Pinto de |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
|
dc.contributor.author.fl_str_mv |
Cruz, Frank George Guimarães Costa, Paulo Tabajara C. Lopes, Juarez Morbini Toledo, Salete Pinto de |
dc.subject.por.fl_str_mv |
diet; feed intake; weight gain; feed conversion; phosphorus level dieta; consumo de ração; ganho de peso; conversão alimentar; níveis de fósforo |
topic |
diet; feed intake; weight gain; feed conversion; phosphorus level dieta; consumo de ração; ganho de peso; conversão alimentar; níveis de fósforo |
description |
Cobb broilers were fed until 56 days of age, to verify the effects of P levels in four treatments constituted of T1 = 100% of the N.R.C. recommendations for total P, T2 = 95%, T3 = 90% and T4 = 85%, on the starting (1-21 days), growing (22-42 days) and finishing (42-56 days) phases, respectively. The following parameters were evaluated: feed intake, weight gain, feed conversion and blood P level. After the broilers were slaughtered (56 days), tibia breaking resistance was evaluated. Calcium and phosphorus from the ashes of the tibia were also determined. Analysis of variance of the data was performed and the differences were compared by Duncan's test. The results allow to condude that for the starting phase (1-21 days) the total P level recommended would be equal to 0.75% (100% N.R.Cj.); for the growing phase (22-42 days) the best performance was obtained with the level of 0.66% (95% N.R.C.), and for the finishing phase (43-56 days) the levels of 0.61% and 0.57% (95% and 90% N.R.C.) presented similar results as to the feed conversion and cost of productionfor a unit of gain. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-04-17 |
dc.type.none.fl_str_mv |
|
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://seer.sct.embrapa.br/index.php/pab/article/view/13286 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/13286 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://seer.sct.embrapa.br/index.php/pab/article/view/13286/7491 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
publisher.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
dc.source.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira; v.25, n.1, jan. 1990; 1-7 Pesquisa Agropecuária Brasileira; v.25, n.1, jan. 1990; 1-7 1678-3921 0100-104x reponame:Pesquisa Agropecuária Brasileira (Online) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Pesquisa Agropecuária Brasileira (Online) |
collection |
Pesquisa Agropecuária Brasileira (Online) |
repository.name.fl_str_mv |
Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
pab@sct.embrapa.br || sct.pab@embrapa.br |
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1793416665768132608 |