Levels of available phosphorus and calcium for broilers from 8 to 35 days of age fed rations containing phytase
Autor(a) principal: | |
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Data de Publicação: | 2010 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Institucional da UFLA |
Texto Completo: | http://repositorio.ufla.br/jspui/handle/1/12631 |
Resumo: | Two experiments using Cobb broiler chicks from 8 to 35 days of age were carried out to evaluate the effect of reducing levels of calcium and available phosphorus in diets supplemented with 500 ftu phytase/kg on the performance of the birds, the content of ashes in the tibia, the metabolizable energy of the diet, and the metabolizability of the dry matter and crude protein. It was used 1,404 broiler chicks in the experiment 1 to evaluate feed intake, weight gain, food conversion and percentage of the ashes in the tibia. In the experiment 2, simultaneously carried out with experiment 1, a total of 390 birds were transferred to a metabolism room to determine the metabolizable energy and metabolizability of the dry matter and crude protein. It was used in the two experiments, a complete random design in a 3 × 4 + 1 factorial scheme with three levels of available phosphorus (0.375; 0.325; and 0.275%) and four levels of calcium (0.85; 0.75; 0.65 and 0.55%) in the diets, supplemented with phytase. It was also used a control diet without phytase, based on corn and soybean bran, formulated with 0.425% of available phosphorus and 0.85% of calcium. In the experiment 1, the reduction of levels of calcium and phosphorus did not cause a significant difference on the performance and percentage of bone ashes. The levels of calcium and available phosphorus used in the experiment 2 can be reduced down to 0.65 and 0.325%, respectively, because the effects are similar to those obtained with the currently suggested levels. |
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Levels of available phosphorus and calcium for broilers from 8 to 35 days of age fed rations containing phytaseNíveis de fósforo disponível e de cálcio para frangos de corte de 8 a 35 dias de idade alimentados com rações contendo fitaseEnzymeMineralsNutritional requirementEnzima,Exigência nutricionalMineraisTwo experiments using Cobb broiler chicks from 8 to 35 days of age were carried out to evaluate the effect of reducing levels of calcium and available phosphorus in diets supplemented with 500 ftu phytase/kg on the performance of the birds, the content of ashes in the tibia, the metabolizable energy of the diet, and the metabolizability of the dry matter and crude protein. It was used 1,404 broiler chicks in the experiment 1 to evaluate feed intake, weight gain, food conversion and percentage of the ashes in the tibia. In the experiment 2, simultaneously carried out with experiment 1, a total of 390 birds were transferred to a metabolism room to determine the metabolizable energy and metabolizability of the dry matter and crude protein. It was used in the two experiments, a complete random design in a 3 × 4 + 1 factorial scheme with three levels of available phosphorus (0.375; 0.325; and 0.275%) and four levels of calcium (0.85; 0.75; 0.65 and 0.55%) in the diets, supplemented with phytase. It was also used a control diet without phytase, based on corn and soybean bran, formulated with 0.425% of available phosphorus and 0.85% of calcium. In the experiment 1, the reduction of levels of calcium and phosphorus did not cause a significant difference on the performance and percentage of bone ashes. The levels of calcium and available phosphorus used in the experiment 2 can be reduced down to 0.65 and 0.325%, respectively, because the effects are similar to those obtained with the currently suggested levels.Dois experimentos com pintos de corte da linhagem Cobb no período de 8 a 35 dias de idade foram realizados para avaliar o efeito da redução dos níveis de cálcio e fósforo disponível (Pdisp) em rações suplementadas com 500 ftu de fitase/kg sobre o desempenho das aves, o teor de cinzas na tíbia, a energia metabolizável (EMAn) da dieta e a metabolizabilidade da matéria seca (MS) e da proteína bruta (PB). No experimento 1, foram utilizados 1.404 pintos de corte para avaliação do consumo de ração, do ganho de peso, da conversão alimentar e da porcentagem de cinzas na tíbia. No experimento 2, conduzido simultaneamente ao primeiro, um total de 390 aves foram transferidas para uma sala de metabolismo para determinação da EMAn e da metabolizabilidade da MS e PB. Nos dois experimentos, utilizou-se delineamento inteiramente casualizado, em esquema fatorial 3 × 4 + 1, com três níveis de fósforo disponível (0,375; 0,325 e 0,275%) e quatro níveis de cálcio (0,85; 0,75; 0,65 e 0,55%) nas dietas, suplementadas com fitase. Também foi usada uma dieta controle sem fitase, à base de milho e farelo de soja, formulada com 0,425% de fósforo disponível e 0,85% de cálcio. No experimento 1, a redução dos níveis de cálcio e fósforo não ocasionou diferença significativa no desempenho e na porcentagem de cinzas ósseas. Os níveis de cálcio e fósforo disponível utilizados no experimento 2 podem ser reduzidos em até 0,65 e 0,325%, respectivamente, pois os efeitos são semelhantes aos obtidos com os níveis atualmente recomendados.Sociedade Brasileira de Zootecnia2017-04-03T19:11:33Z2017-04-03T19:11:33Z2010-06info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfCARDOSO JÚNIOR, A. et al. Levels of available phosphorus and calcium for broilers from 8 to 35 days of age fed rations containing phytase. Revista Brasileira de Zootecnia, Viçosa, MG, v. 39, n. 6, p. 1237-1245, jun. 2010.http://repositorio.ufla.br/jspui/handle/1/12631Revista Brasileira de Zootecniareponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLACardoso Júnior, AdimarRodrigues, Paulo BorgesBertechini, Antônio GilbertoFreitas, Rilke Tadeu Fonseca deLima, Renato Ribeiro deLima, Gustavo Freire Resendeinfo:eu-repo/semantics/openAccesspor2017-04-03T19:11:33Zoai:localhost:1/12631Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2017-04-03T19:11:33Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false |
dc.title.none.fl_str_mv |
Levels of available phosphorus and calcium for broilers from 8 to 35 days of age fed rations containing phytase Níveis de fósforo disponível e de cálcio para frangos de corte de 8 a 35 dias de idade alimentados com rações contendo fitase |
title |
Levels of available phosphorus and calcium for broilers from 8 to 35 days of age fed rations containing phytase |
spellingShingle |
Levels of available phosphorus and calcium for broilers from 8 to 35 days of age fed rations containing phytase Cardoso Júnior, Adimar Enzyme Minerals Nutritional requirement Enzima, Exigência nutricional Minerais |
title_short |
Levels of available phosphorus and calcium for broilers from 8 to 35 days of age fed rations containing phytase |
title_full |
Levels of available phosphorus and calcium for broilers from 8 to 35 days of age fed rations containing phytase |
title_fullStr |
Levels of available phosphorus and calcium for broilers from 8 to 35 days of age fed rations containing phytase |
title_full_unstemmed |
Levels of available phosphorus and calcium for broilers from 8 to 35 days of age fed rations containing phytase |
title_sort |
Levels of available phosphorus and calcium for broilers from 8 to 35 days of age fed rations containing phytase |
author |
Cardoso Júnior, Adimar |
author_facet |
Cardoso Júnior, Adimar Rodrigues, Paulo Borges Bertechini, Antônio Gilberto Freitas, Rilke Tadeu Fonseca de Lima, Renato Ribeiro de Lima, Gustavo Freire Resende |
author_role |
author |
author2 |
Rodrigues, Paulo Borges Bertechini, Antônio Gilberto Freitas, Rilke Tadeu Fonseca de Lima, Renato Ribeiro de Lima, Gustavo Freire Resende |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Cardoso Júnior, Adimar Rodrigues, Paulo Borges Bertechini, Antônio Gilberto Freitas, Rilke Tadeu Fonseca de Lima, Renato Ribeiro de Lima, Gustavo Freire Resende |
dc.subject.por.fl_str_mv |
Enzyme Minerals Nutritional requirement Enzima, Exigência nutricional Minerais |
topic |
Enzyme Minerals Nutritional requirement Enzima, Exigência nutricional Minerais |
description |
Two experiments using Cobb broiler chicks from 8 to 35 days of age were carried out to evaluate the effect of reducing levels of calcium and available phosphorus in diets supplemented with 500 ftu phytase/kg on the performance of the birds, the content of ashes in the tibia, the metabolizable energy of the diet, and the metabolizability of the dry matter and crude protein. It was used 1,404 broiler chicks in the experiment 1 to evaluate feed intake, weight gain, food conversion and percentage of the ashes in the tibia. In the experiment 2, simultaneously carried out with experiment 1, a total of 390 birds were transferred to a metabolism room to determine the metabolizable energy and metabolizability of the dry matter and crude protein. It was used in the two experiments, a complete random design in a 3 × 4 + 1 factorial scheme with three levels of available phosphorus (0.375; 0.325; and 0.275%) and four levels of calcium (0.85; 0.75; 0.65 and 0.55%) in the diets, supplemented with phytase. It was also used a control diet without phytase, based on corn and soybean bran, formulated with 0.425% of available phosphorus and 0.85% of calcium. In the experiment 1, the reduction of levels of calcium and phosphorus did not cause a significant difference on the performance and percentage of bone ashes. The levels of calcium and available phosphorus used in the experiment 2 can be reduced down to 0.65 and 0.325%, respectively, because the effects are similar to those obtained with the currently suggested levels. |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-06 2017-04-03T19:11:33Z 2017-04-03T19:11:33Z |
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 |
CARDOSO JÚNIOR, A. et al. Levels of available phosphorus and calcium for broilers from 8 to 35 days of age fed rations containing phytase. Revista Brasileira de Zootecnia, Viçosa, MG, v. 39, n. 6, p. 1237-1245, jun. 2010. http://repositorio.ufla.br/jspui/handle/1/12631 |
identifier_str_mv |
CARDOSO JÚNIOR, A. et al. Levels of available phosphorus and calcium for broilers from 8 to 35 days of age fed rations containing phytase. Revista Brasileira de Zootecnia, Viçosa, MG, v. 39, n. 6, p. 1237-1245, jun. 2010. |
url |
http://repositorio.ufla.br/jspui/handle/1/12631 |
dc.language.iso.fl_str_mv |
por |
language |
por |
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info:eu-repo/semantics/openAccess |
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openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Zootecnia |
publisher.none.fl_str_mv |
Sociedade Brasileira de Zootecnia |
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Revista Brasileira de Zootecnia reponame:Repositório Institucional da UFLA instname:Universidade Federal de Lavras (UFLA) instacron:UFLA |
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Universidade Federal de Lavras (UFLA) |
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UFLA |
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UFLA |
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Repositório Institucional da UFLA |
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Repositório Institucional da UFLA |
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Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA) |
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nivaldo@ufla.br || repositorio.biblioteca@ufla.br |
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