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| Naves,Luciana de Paula; Rodrigues,Paulo Borges; Bertechini,Antônio Gilberto; Lima,Eduardo Machado Costa; Teixeira,Levy do Vale; Alvarenga,Renata Ribeiro; Nardelli,Nicole Batelli de Souza; Oliveira,David Henrique de; Oliveira,Marcelo Henrique de. |
| O objetivo deste trabalho foi avaliar o uso de valores de equivalência da fitase como base para redução de fósforo disponível (P-disp) em dietas para frangos. Foram avaliados dez planos nutricionais com seis repetições de 15 aves cada uma. Avaliaram-se: desempenho, teor de cinzas na tíbia e custo da ração. De 1 a 7 e de 36 a 42 dias de idade, as aves receberam dieta basal; de 8 a 21 dias, dieta sem fitase contendo 3,9 g kg-1 de P-disp e quatro dietas com fitase contendo de 1,1 a 2,5 g kg-1 de P-disp; e de 22 a 35 dias, dieta sem fitase contendo 3,4 g kg-1 de P-disp mais dieta com fitase contendo 1,6 g kg-1 de P-disp. O melhor plano nutricional foi composto pelas dietas: 4,7 g kg-1 de P-disp sem fitase (1 a 7 dias); 2,0 g kg-1 de P-disp suplementada com... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Avicultura; Cinza óssea; Desempenho; Enzima; Fitato; Nutrição. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2014000100011 |
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| Oliveira,David Henrique de; Naves,Luciana de Paula; Nardelli,Nicole Batelli de Souza; Zangerônimo,Márcio Gilberto; Rodrigues,Paulo Borges. |
| Abstract: 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... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Microbial enzymes; Phosphorus digestibility; Phytase superdosing; Stages of creation. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018001101222 |
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| Nardelli,Nicole Batelli de Souza; Naves,Luciana de Paula; Oliveira,David Henrique de; Garcia Junior,Antonio Amandio Pinto; Lima,Eduardo Machado Costa; Oliveira,Evelyn Cristina de; Rodrigues,Paulo Borges. |
| ABSTRACT The objective of the current study was to evaluate the effects of three calcium:available phosphorus (Ca:aP) ratios and different supplementation with phytases from different origins on performance and ash, Ca, and P contents in the tibia of broilers. A total of 900 male broilers (22 to 35 days old) were fed ten dietary treatments in a completely randomized design. A 3 × 3 + 1 factorial scheme was used, corresponding to three Ca:aP ratios (4.5:1.0, 6.0:1.0, and 7.5:1.0) and three different supplementations with phytases from different origins (isolated or combined supplementation with bacterial and fungal phytase), plus a control diet. Regardless of the dietary Ca:aP ratio, the isolated use of bacterial phytase provided better feed conversion than... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Enzyme; Nutrition; Phytate; Phytic acid. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982018000100535 |
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