Evaluation of equivalency values of microbial phytase to inorganic phosphorus in 22- to 42-day-old broilers

Han, Jincheng; Yang, Xiaojun; Qu, HX; Xu, Minghan; Zhang, T.; Li, W. L.; Yao, Jun; Liu, Y. R.; Shi, Bo; Zhou, Z. F.; Feng, Xi

doi:10.3382/japr.2009-00029

Cited by 26 publications

(34 citation statements)

References 36 publications

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“…This result agrees with the findings of Mohammed et al (1991) and Han et al (2009a), who found that the increase in dietary NPP level increased plasma P level, but reduced plasma Ca levels in 42-day-old broilers.…”

Section: Serum Mineralssupporting

confidence: 83%

Effects of Non-phytate Phosphorus and 1a-Hydroxycholecalciferol on Growth Performance, Bone Mineralization, and Carcass Traits of Broiler Chickens

Han

Wang

et al. 2015

Rev. Bras. Cienc. Avic.

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This study evaluated the effects of dietary non-phytate phosphorus (NPP) and 1α-hydroxycholecalciferol (1α-OH-D 3 ) on the growth performance, bone mineralization, and carcass traits of 1-to 21-day-old broiler chickens. On the day of hatch, 600 male Ross 308 chicks were weighed and randomly assigned to 12 treatments, with five cages of 10 birds each. A 6 × 2 factorial arrangement was applied, consisting of 0.20%, 0.25%, 0.30%, 0.35%, 0.40%, or 0.45% NPP and 0 or 5 μg/kg of 1α-OH-D 3 . The basal diet contained 0.52% calcium (Ca) and was not supplemented with vitamin D 3 . Dietary NPP levels significantly affected growth performance and tibia mineralization (except width) of broilers; by contrast, meat yield and organ relative weight were not influenced by NPP. The inclusion of 1α-OH-D 3 improved growth performance, tibia mineralization, and carcass and breast yield, whereas it decreased the relative weights of the liver, heart, and kidney. A significant interaction between NPP and 1α-OH-D 3 was observed for body weight gain (BWG), feed efficiency (FE), mortality, serum Ca and P levels, tibia breakingstrength, ash weight, and Ca content, as well as breast yield and heart relative weight. These results suggest that broilers fed with 5 μg of 1α-OH-D 3 per kg of diet obtain optimal growth performance and tibia mineralization when dietary NPP level was 0.30% and the analyzed Ca to NPP ratio was 1.97.

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Section: Serum Mineralssupporting

confidence: 83%

Effects of Non-phytate Phosphorus and 1a-Hydroxycholecalciferol on Growth Performance, Bone Mineralization, and Carcass Traits of Broiler Chickens

Han

Wang

et al. 2015

Rev. Bras. Cienc. Avic.

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“…However, the increase of the phytase level improvement linearly (P<0.01) this bone parameter. These results corroborate to SANTOS et al (2008) and HAN et al (2009) who also observed improvement in the bone mineralization of broiler fed diets defi cient in P, but supplemented with phytase.…”

Section: Resultssupporting

confidence: 90%

“…With this, it is expected that the av P content present in the diet, added to the content of phytate P ( phy P) made available by the catalytic action of the phytase, meets the P requirement of the bird (HAN et al, 2009). The industry related to broiler nutrition, normally has recommended the phytase supplementation with an inclusion level between 500 and 1,000 units of phytase activity (FTU) kg -1 of diet (BERTECHINI, 2012).…”

Section: Introductionmentioning

confidence: 99%

Increasing levels of phytase in diets formulated with reduced available phosphorus content supplied to male and female broilers

et al. 2014

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“…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

“…Isso significa que as dietas fornecidas de 8 a 35 dias de idade, dentro do PN 4, não foram suficientes para atender à exigência de P das aves e assegurar a adequada mineralização óssea. Esse resultado está de acordo com pesquisas que têm mostrado que o valor de equivalência de P estabelecido para um determinado nível de suplementação de fitase é menor quando o parâmetro considerado é o teor de cinza óssea (Jendza et al, 2006;Han et al, 2009;Shaw et al, 2011).…”

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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Evaluation of equivalency values of microbial phytase to inorganic phosphorus in 22- to 42-day-old broilers

Cited by 26 publications

References 36 publications

Effects of Non-phytate Phosphorus and 1a-Hydroxycholecalciferol on Growth Performance, Bone Mineralization, and Carcass Traits of Broiler Chickens

Effects of Non-phytate Phosphorus and 1a-Hydroxycholecalciferol on Growth Performance, Bone Mineralization, and Carcass Traits of Broiler Chickens

Increasing levels of phytase in diets formulated with reduced available phosphorus content supplied to male and female broilers

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

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