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Registro Completo
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
02/01/2019 |
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Data da última atualização: |
25/02/2019 |
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Autoria: |
OLIVEIRA, D. H. de; NAVES, L. de P.; NARDELLI, N. B. de S.; ZANGERÔNIMO, M. G.; RODRIGUES, P. B. |
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Afiliação: |
David Henrique de Oliveira, Universidade Federal de Lavras - UFLA/Departamento de Zootecnia; Luciana de Paula Naves, Universidade José do Rosário Vellano/Departamento de Agronomia; Nicole Batelli de Souza Nardelli, Universidade Federal de Lavras - UFLA/Departamento de Zootecnia; Márcio Gilberto Zangerônimo, Universidade Federal de Lavras - UFLA/Departamento de Medicina Veterinária; Paulo Borges Rodrigues, Universidade Federal de Lavras - UFLA/Departamento de Zootecnia. |
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Título: |
Ileal digestibility of calcium and phosphorus in broilers fed diets with different phytases and Ca:available P ratios. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 53, n. 11, p. 1222-1229, Nov. 2018. |
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Idioma: |
Inglês |
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Notas: |
Título em português: Digestibilidade ileal de cálcio e fósforo em frangos de corte alimentados com rações com diferentes fitases e relações cálcio:fósforo disponível. |
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Conteúdo: |
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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Palavras-Chave: |
Digestibilidade do fósforo; Enzimas microbianas; Fases de criação; Microbial enzymes; Phosphorus digestibility; Phytase superdosing; Stages of creation; Superdosagem de fitase. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/189569/1/Lleal-digestibility-of-calcium-and-phosphorus.pdf
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|
Marc: |
LEADER 02334naa a2200277 a 4500
001 2102749
005 2019-02-25
008 2018 bl uuuu u00u1 u #d
100 1 $aOLIVEIRA, D. H. de
245 $aIleal digestibility of calcium and phosphorus in broilers fed diets with different phytases and Ca$bavailable P ratios.$h[electronic resource]
260 $c2018
500 $aTítulo em português: Digestibilidade ileal de cálcio e fósforo em frangos de corte alimentados com rações com diferentes fitases e relações cálcio:fósforo disponível.
520 $aThe 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.
653 $aDigestibilidade do fósforo
653 $aEnzimas microbianas
653 $aFases de criação
653 $aMicrobial enzymes
653 $aPhosphorus digestibility
653 $aPhytase superdosing
653 $aStages of creation
653 $aSuperdosagem de fitase
700 1 $aNAVES, L. de P.
700 1 $aNARDELLI, N. B. de S.
700 1 $aZANGERÔNIMO, M. G.
700 1 $aRODRIGUES, P. B.
773 $tPesquisa Agropecuária Brasileira, Brasília, DF$gv. 53, n. 11, p. 1222-1229, Nov. 2018.
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