Ileal digestibility of calcium and phosphorus in broilers fed diets with different phytases and Ca: available P ratios
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 UFLA |
Texto Completo: | http://repositorio.ufla.br/jspui/handle/1/34363 |
Resumo: | The objective of this work was to determine the apparent ileal digestibility of calcium and phosphorus in broilers fed diets with different phytases and calcium:available phosphorus (Ca:aP) ratios. Two experiments were carried out: one with broilers with 22 to 33 days of age, and the other with broilers with 35 to 42 days. The Ca:aP ratios used were 4.5:1.0, 6.0:1.0, and 7.5:1.0 in the first period, and 3.5:1.0, 5.0:1.0, and 6.5:1.0 in the second. All diets were supplemented with 1,500 units of phytase activity per kilogram of six different sources of microbial phytase. At the end of each experiment, two broilers per replicate were slaughtered to collect the ileal content. In the samples of digested food, the Ca and P contents were determined for later calculation of the apparent ileal digestibility coefficients of these minerals. The Ca:aP ratio influenced the activity of phytases, and the highest digestibility was observed with lower ratios, in both experiments. The phytases that provided greater digestibility coefficients were A, D, and E. In both ages evaluated, the inclusion of phytases in the feed improved the digestibility of Ca and P, which was also affected by the content of calcium and by the phytase source used. |
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Ileal digestibility of calcium and phosphorus in broilers fed diets with different phytases and Ca: available P ratiosDigestibilidade ileal de cálcio e fósforo em frangos de corte alimentados com rações com diferentes fitases e relações cálcio: fósforo disponívelMicrobial enzymesPhosphorus digestibilityPhytase superdosingStages of creationEnzimas microbianasDigestibilidade do fósforoSuperdosagem de fitaseFases de criaçãoThe objective of this work was to determine the apparent ileal digestibility of calcium and phosphorus in broilers fed diets with different phytases and calcium:available phosphorus (Ca:aP) ratios. Two experiments were carried out: one with broilers with 22 to 33 days of age, and the other with broilers with 35 to 42 days. The Ca:aP ratios used were 4.5:1.0, 6.0:1.0, and 7.5:1.0 in the first period, and 3.5:1.0, 5.0:1.0, and 6.5:1.0 in the second. All diets were supplemented with 1,500 units of phytase activity per kilogram of six different sources of microbial phytase. At the end of each experiment, two broilers per replicate were slaughtered to collect the ileal content. In the samples of digested food, the Ca and P contents were determined for later calculation of the apparent ileal digestibility coefficients of these minerals. The Ca:aP ratio influenced the activity of phytases, and the highest digestibility was observed with lower ratios, in both experiments. The phytases that provided greater digestibility coefficients were A, D, and E. In both ages evaluated, the inclusion of phytases in the feed improved the digestibility of Ca and P, which was also affected by the content of calcium and by the phytase source used.O objetivo deste trabalho foi determinar a digestibilidade ileal aparente do cálcio e do fósforo em frangos de corte alimentados com rações com diferentes fitases e relações cálcio:fósforo disponível (Ca:Pd). Foram realizados dois experimentos: um com frangos de 22 a 33 dias de idade, e outro com frangos de 35 a 42 dias. As relações Ca:Pd usadas foram de 4,5:1,0, 6,0:1,0 e 7,5:1,0, no primeiro período, e de 3,5:1,0, 5,0:1,0 e 6,5:1,0, no segundo. Todas as dietas foram suplementadas com 1.500 unidades de atividade de fitase por quilograma de seis diferentes fontes de fitase microbiana. Ao final de cada experimento, duas aves por repetição foram abatidas para a coleta do conteúdo ileal. Nas amostras de digestas, foram determinados os teores de Ca e P para posterior cálculo do coeficiente de digestibilidade ileal aparente destes minerais. A relação Ca:Pd influenciou a atividade das fitases, e a maior digestibilidade foi observada nas menores relações, em ambos os experimentos. As fitases que proporcionaram os maiores coeficientes de digestibilidade foram A, D e E. Em ambas as idades avaliadas, a inclusão de fitases às dietas aumentou a digestibilidade de Ca e P, a qual também foi afetada pelo teor de cálcio e pela fonte de fitase utilizada.Embrapa Secretaria de Pesquisa e Desenvolvimento Pesquisa Agropecuária Brasileira2019-05-23T12:16:05Z2019-05-23T12:16:05Z2018info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfOLIVEIRA, D. H. de et al. Ileal digestibility of calcium and phosphorus in broilers fed diets with different phytases and Ca: available P ratios. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 53, n. 11, 2018.http://repositorio.ufla.br/jspui/handle/1/34363Pesquisa Agropecuária Brasileirareponame: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, David Henrique deNaves, Luciana de PaulaNardelli, Nicole Batelli de SouzaZangerônimo, Márcio GilbertoRodrigues, Paulo Borgeseng2019-05-23T12:16:06Zoai:localhost:1/34363Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2019-05-23T12:16:06Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false |
dc.title.none.fl_str_mv |
Ileal digestibility of calcium and phosphorus in broilers fed diets with different phytases and Ca: available P ratios Digestibilidade ileal de cálcio e fósforo em frangos de corte alimentados com rações com diferentes fitases e relações cálcio: fósforo disponível |
title |
Ileal digestibility of calcium and phosphorus in broilers fed diets with different phytases and Ca: available P ratios |
spellingShingle |
Ileal digestibility of calcium and phosphorus in broilers fed diets with different phytases and Ca: available P ratios Oliveira, David Henrique de Microbial enzymes Phosphorus digestibility Phytase superdosing Stages of creation Enzimas microbianas Digestibilidade do fósforo Superdosagem de fitase Fases de criação |
title_short |
Ileal digestibility of calcium and phosphorus in broilers fed diets with different phytases and Ca: available P ratios |
title_full |
Ileal digestibility of calcium and phosphorus in broilers fed diets with different phytases and Ca: available P ratios |
title_fullStr |
Ileal digestibility of calcium and phosphorus in broilers fed diets with different phytases and Ca: available P ratios |
title_full_unstemmed |
Ileal digestibility of calcium and phosphorus in broilers fed diets with different phytases and Ca: available P ratios |
title_sort |
Ileal digestibility of calcium and phosphorus in broilers fed diets with different phytases and Ca: available P ratios |
author |
Oliveira, David Henrique de |
author_facet |
Oliveira, David Henrique de Naves, Luciana de Paula Nardelli, Nicole Batelli de Souza Zangerônimo, Márcio Gilberto Rodrigues, Paulo Borges |
author_role |
author |
author2 |
Naves, Luciana de Paula Nardelli, Nicole Batelli de Souza Zangerônimo, Márcio Gilberto Rodrigues, Paulo Borges |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Oliveira, David Henrique de Naves, Luciana de Paula Nardelli, Nicole Batelli de Souza Zangerônimo, Márcio Gilberto Rodrigues, Paulo Borges |
dc.subject.por.fl_str_mv |
Microbial enzymes Phosphorus digestibility Phytase superdosing Stages of creation Enzimas microbianas Digestibilidade do fósforo Superdosagem de fitase Fases de criação |
topic |
Microbial enzymes Phosphorus digestibility Phytase superdosing Stages of creation Enzimas microbianas Digestibilidade do fósforo Superdosagem de fitase Fases de criação |
description |
The objective of this work was to determine the apparent ileal digestibility of calcium and phosphorus in broilers fed diets with different phytases and calcium:available phosphorus (Ca:aP) ratios. Two experiments were carried out: one with broilers with 22 to 33 days of age, and the other with broilers with 35 to 42 days. The Ca:aP ratios used were 4.5:1.0, 6.0:1.0, and 7.5:1.0 in the first period, and 3.5:1.0, 5.0:1.0, and 6.5:1.0 in the second. All diets were supplemented with 1,500 units of phytase activity per kilogram of six different sources of microbial phytase. At the end of each experiment, two broilers per replicate were slaughtered to collect the ileal content. In the samples of digested food, the Ca and P contents were determined for later calculation of the apparent ileal digestibility coefficients of these minerals. The Ca:aP ratio influenced the activity of phytases, and the highest digestibility was observed with lower ratios, in both experiments. The phytases that provided greater digestibility coefficients were A, D, and E. In both ages evaluated, the inclusion of phytases in the feed improved the digestibility of Ca and P, which was also affected by the content of calcium and by the phytase source used. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018 2019-05-23T12:16:05Z 2019-05-23T12:16:05Z |
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, D. H. de et al. Ileal digestibility of calcium and phosphorus in broilers fed diets with different phytases and Ca: available P ratios. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 53, n. 11, 2018. http://repositorio.ufla.br/jspui/handle/1/34363 |
identifier_str_mv |
OLIVEIRA, D. H. de et al. Ileal digestibility of calcium and phosphorus in broilers fed diets with different phytases and Ca: available P ratios. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 53, n. 11, 2018. |
url |
http://repositorio.ufla.br/jspui/handle/1/34363 |
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 |
Embrapa Secretaria de Pesquisa e Desenvolvimento Pesquisa Agropecuária Brasileira |
publisher.none.fl_str_mv |
Embrapa Secretaria de Pesquisa e Desenvolvimento Pesquisa Agropecuária Brasileira |
dc.source.none.fl_str_mv |
Pesquisa Agropecuária Brasileira 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 |
_version_ |
1815439184928702464 |