Efeito da suplementação de fitase sobre o desempenho e a digestibilidade dos nutrientes em frangos de corte

Fukayama, Ellen Hatsumi; Sakomura, Nilva Kazue; Dourado, Leilane Rocha Barros; Neme, Rafael; Fernandes, João Batista Kochenborger; Marcato, Simara Márcia

doi:10.1590/s1516-35982008000400007

Cited by 24 publications

(29 citation statements)

References 18 publications

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“…However, by comparing the results of this study to the literature, it is suggested that the higher activity of phytase on phosphorus release and the reduction of nitrogen in excreta were certainly due to decreased protein with the inclusion of crystalline amino acids. Fukayama et al (2008) found that 1,000 PTU/ kg of phytase was not sufficient to alter the protein digestibility, but it was sufficient to alter the digestibility of calcium and phosphorus.…”

Section: Resultsmentioning

confidence: 93%

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Energy and protein levels in diets containing phytase for broilers from 22 to 42 days of age: performance and nutrient excretion

Nagata¹,

Rodrigues²,

Alvarenga³

et al. 2011

R. Bras. Zootec.

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-This study was conducted in order to evaluate the influence of different levels of metabolizable energy and crude protein in diets formulated according to the ideal protein concept with phytase supplementation on performance and nutrient excretion of broilers from 22 to 42 days age. It was used 1,500 Coob lineage broilers at 22 days of age and with initial weight of 833 ± 7g, distributed in completely randomized design in a 3 × 3 + 1 factorial scheme composed of three levels of correct apparent metabolizable energy (2,950; 3,100 and 3,250 kcal/kg), three levels of crude protein (14, 16 and 18%) and a control treatment, totaling ten treatments with six repetitions of 25 birds each. All diets, with the exception of the control, were supplemented with phytase. For determination of excretion of pollutants, it was used 180 broilers from the same lineage at 35 days of age,placed in metabolic cages, with ten treatments each one with six repetitions and three birds per experimental unit. The protein and energy levels in diets containing phytase influenced feed intake, weight gain, feed conversion and excretion of nitrogen, phosphorus, calcium, potassium, copper and zinc by the birds. The corrected apparent metabolizable energy level in the diets for broilers in the studied period must be increased up to 3,250 kcal/kg of metabolizable energy and the levels of crude protein, calcium and phosphorus must be reduced down to 18, 0.70 and 0.31%, respectively, provided that supplemented with amino acids and phytase to improve the performance and to reduce excretion of pollutants by birds.

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Section: Resultsmentioning

confidence: 93%

“…According to Gates (2000), low crude protein diets containing essential amino acids reduce the nitrogen concentration in waste. In addition, the use of additives that increase the digestibility of nutrients is also considered as a way to reduce environmental impact.…”

Section: Introductionmentioning

confidence: 99%

Energy and protein levels in diets containing phytase for broilers from 22 to 42 days of age: performance and nutrient excretion

Nagata¹,

Rodrigues²,

Alvarenga³

et al. 2011

R. Bras. Zootec.

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“…Dilger et al (2004) and Lan et al (2002) evaluated the performance of broilers fed diets containing different levels of the enzyme phytase and low levels of Pd and also observed that the addition of this enzyme provided better performance to birds, when compared with those which received diets without the inclusion of the enzyme. Fukayama et al (2008) observed that the addition of phytase in all the levels utilized (500, 700 and 1,000 uft/kg of the diet) improved the performance of 1-to 20-day old broilers. Moreover, among the levels studied, that of 750 uft/kg of diet enabled maximum performance of birds, in addition to characteristics of bone mineralization and digestibility of nutrients.…”

Section: Resultsmentioning

confidence: 94%

“…Research has shown that the performance of broilers fed with different levels of inclusion of phytase and low levels of available P in the diets can improve with the addition of the enzyme (Dilger et al, 2004;Santos et al, 2005;Fukayama et al, 2008). However, other researchers did not observe beneficial effect on broiler performance with the addition of phytase in the diets (Lima et al, 2002;Assuena et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Diet supplementation with phytase on performance of broiler chickens

Lelis¹,

Albino²,

Calderano³

et al. 2012

R. Bras. Zootec.

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-The assay was carried out to determine the effect of phytase supplementation on performance of broilers from 1 to 21 and 1 to 40 days of age. Twelve hundred and fifty male broilers (Ross) were distributed in a randomized experimental design, with five treatments, 10 repetitions and 25 birds per experimental unit. The treatments consisted of evaluating the phytase supplementation in diets with reductions in nutritional levels, compared with the positive control.The nutrient contents in negative controls one and two were reduced progressively and these diets were supplemented with phytase levels of 250 and 500 ftu/kg of the diet, respectively. Two diets were formulated: pre-starter/starter, 1-21 days, and growth/finishing, from 21 to 40 days). In both phases, with the phytase supplementation in diets that had their nutritional levels reduced (negative control one + 250 ftu and negative control two + 500 ftu), feed intake, weight gain and feed conversion of the birds were similar to the positive control. In the period from 1 to 40 days of age, with the diets supplemented with phytase, the productive efficiency index of the birds was similar to that of the positive control group.Supplementation with 250 ftu/kg and 500 ftu/kg phytase in diets with reduced nutritional levels improved broiler performance, resulting in parameters similar to those shown by broilers fed with the diet with normal levels of nutrients.

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“…Esse resultado corrobora o relatado por Shaw et al (2011). A explicação para a manutenção desses parâmetros quando se reduz o nível de P-disp na ração é a suplementação da dieta com a fitase, pois essa enzima melhora o aproveitamento do P fítico pela ave (Fukayama et al, 2008;Donato et al, 2011;Shaw et al, 2011). A fitase catalisa a reação de desfosforilação do fitato em ésteres de fosfato de mioinositol menores e P inorgânico, de maneira que, após a ação catalítica da fitase sobre o fitato, o P fítico hidrolisado se torna disponível aos monogástricos e pode ser absorvido e aproveitado metabolicamente pela ave (Han et al, 2009).…”

Section: Resultsunclassified

Redução de fósforo em dietas para frangos com base em valores de equivalência da fitase

Naves

Rodrigues

Bertechini

et al. 2014

Pesq. agropec. bras.

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Resumo -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 fitase (8 a 21 dias); 3,4 g kg -1 de P-disp em ração sem fitase (22 a 35 dias); e 3,0 g kg -1 de P-disp em ração sem fitase (36 a 42 dias). A redução do P-disp ocorre no período de 8 a 21 dias de idade e corresponde a 2,0 g kg -1 de ração suplementada com fitase.Termos para indexação: avicultura, cinza óssea, desempenho, enzima, fitato, nutrição. Reduction of phosphorus in broiler diets based on equivalency values of phytaseAbstract -The objective of this work was to evaluate the use of equivalency values of phytase as a basis for reduction of available phosphorus (aP) in broiler diets. Ten nutritional programs were evaluated with six replicates of 15 birds each. The following were evaluated: performance, tibia ash content, and feed costs. From 1 to 7 and 36 to 42 days of age, the birds received basal diet; from 8 to 21 days, diet without phytase containing 3.9 g kg -1 aP and four diets with phytase containing from 1.1 to 2.5 g kg -1 aP; and from 22 to 35 days, diet without phytase containing 3.4 g kg -1 aP plus diet with phytase containing 1.6 g kg -1 aP. The best nutritional plan was formed by the diets: 4.7 g kg -1 aP without phytase (1 to 7 days); 2.0 g kg -1 aP supplemented with phytase (8 to 21 days); 3.4 g kg -1 aP in feed without phytase (22 to 35 days); and 3.0 g kg -1 aP in feed without phytase (36 to 42 days). The reduction of aP occurs in the period from 8 to 21 days of age and corresponds to 2.0 g kg -1 of feed supplemented with phytase.

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Efeito da suplementação de fitase sobre o desempenho e a digestibilidade dos nutrientes em frangos de corte

Cited by 24 publications

References 18 publications

Energy and protein levels in diets containing phytase for broilers from 22 to 42 days of age: performance and nutrient excretion

Energy and protein levels in diets containing phytase for broilers from 22 to 42 days of age: performance and nutrient excretion

Diet supplementation with phytase on performance of broiler chickens

Redução de fósforo em dietas para frangos com base em valores de equivalência da fitase

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