Effects of supplemental phytase on performance and phosphorus utilisation in broiler chickens fed a low phosphorus diet without addition of inorganic phosphates

Brož, J.; P, Oldale; Ah, Perrin-Voltz; Rychen, Guido; Schulze, Julian; Cs, Nunes

doi:10.1080/00071669408417691

Cited by 124 publications

(71 citation statements)

References 3 publications

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“…Outros pesquisadores (Broz et al, 1994;Sebastian et al, 1996;Ahmad et al, 2000;Lan et al, 2002) também verificaram aumento nas cinzas ósseas das tíbias de frangos decorrente da suplementação com fitase. Denbow et al (1998) verificaram que a suplementação com fitase nos níveis de 400, 800 e 1.200 uft/kg melhorou a resistência à quebra das tíbias de frangos de corte aos 21 dias de idade.…”

Section: Resultsunclassified

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

et al. 2008

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RESUMO -Foram utilizados 520 pintos de corte machos da linhagem Cobb ® com 1 dia de idade alimentados com dietas à base de milho, farelo de soja e farelo de arroz desengordurado com o objetivo de avaliar o efeito da suplementação de fitase sobre o desempenho e a digestibilidade dos nutrientes. Foi adotado delineamento inteiramente casualizado, com cinco tratamentos e oito repetições de 13 aves por repetição. A composiçãos percentual dos tratamentos foi: controle positivo (CP) -3.000 kcal de energia metabolizável por quilo (EM/kg); 21,4% de proteína bruta (PB); 0,42% de fósforo disponível (Pd) e 0,96% de cálcio (Ca); e controle negativo (CN) -2.940 kcal EM/kg; 21,2% PB; 0,27% Pd e 0,90% Ca. Avaliaram-se três níveis de suplementação de Fitase 5000 Ouro Fino na dieta CN: 500, 750 ou 1.000 unidades de fitase/kg ração (uft/kg) e seus efeitos na uniformidade, no consumo de ração, no ganho de peso, na conversão alimentar, na digestibilidade da matéria seca (MS), da proteína bruta (PB), do Ca, P, da energia digestível (ED), %MS e %MN, nas concentrações de Ca e P e na resistência óssea nas tíbias dos frangos aos 20 dias de idade. A digestibilidade do P das dietas com menores níveis nutricionais foi inferior à da ração controle positivo. A suplementação com fitase melhorou a digestibilidade do P e da ED, uma vez que os coeficientes melhoraram com a adição de 1.000 uft/kg. A redução nos níveis nutricionais da dieta prejudicou o desempenho e a mineralização e resistência óssea das tíbias das aves, no entanto, a suplementação com fitase melhorou estas características. As características do osso das aves alimentadas com ração CN suplementada com 750 uft de fitase foram semelhantes às obtidas com a dieta controle positivo.Palavras-chave: cálcio, cinza óssea, digestibilidade ileal, fósforo, resistência óssea, tíbia Effect of phytase suplementation on performance and nutrient digestibility in diets of broilers ABSTRACT -A total of 520 1-d old male broiler chicks (Cobb) was fed a corn-soy-fat-free rice meal diet to evaluate the effect of phytase suplementation on performance and nutrient digestibility. The experiment was analyzed as a completely randomized experimental design with five treatments, eight replications of 13 broilers per replication. The percentage composition of the experimental diets were: positive control (PC) with 3000 kcalME/kg; 21.4% CP; 0.42% Pd and 0.96% Ca and negative control (NC) with 2940 kcalME/kg; 21.2% CP; 0.27% Pd and 0.90% Ca. Three levels of supplementation of Fitase 5000 Ouro Fino to NC diets: 500, 750 and 1,000 phytase units/kg of diet (ftu/kg) and their effects on uniformity, feed intake, weight gain, feed conversion, digestibility of dry matter, crude protein, Ca, P and energy digestible (DE), %DM and % as fed, and the concentration of Ca and P and bone resistance in tight of broilers at 20 days of age. The P digestibility of the diets with lower nutritional levels was inferior to the PC diets. The phytase supplementation improved P and DE digestibility, since the coefficients improved with the...

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Section: Resultsunclassified

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

et al. 2008

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“…Phytase supplementation to poultry and swine diets is an area of growing interest as it has the potential both to improve feed efficiency and growth rate of the animals and to decrease environmental pollution (Pen et al, 1993;Broz et al, 1994). In contrast, the other major livestock group, ruminants, requires less phosphate supplementation, possibly in part because of higher levels of phytase activity in these animals.…”

Section: Discussionmentioning

confidence: 99%

“…Further, phytate has anti-nutritive properties including formation of com-plexes with protein and divalent cations (Al-Asheh & Duvnjak, 1995). Phytases have been investigated as a possible solution to these problems, and have been reported not only to increase phosphate utilization efficiency from phytate in feeds but also to decrease phosphorus pollution (Pen et al, 1993;Broz et al, 1994).…”

Section: Introductionmentioning

confidence: 99%

Phytase activity of anaerobic ruminal bacteria

et al. 1998

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Phytase catalyses the release of phosphate from phytate (myo-inositol hexakisphosphate), the predominant form of phosphorus in cereal grains, oilseeds and legumes. The presence of phytase activity was investigated in 334 strains of 22 species of obligately anaerobic ruminal bacteria. Measurable activities were demonstrated in strains of Selenomonas ruminantium, Megasphaera elsdenii, Prevotella ruminicola, Mitsuokella multiacidus and Treponema spp. Strains isolated from fermentations with cereal grains proved to have high activity, and activity was particularly prevalent in S. ruminantium, with over 96% of the tested strains being positive. The measured phytase activity was found exclusively associated with the bacterial cells and was produced in the presence of approximately 14 mM phosphate. The most highly active strains were all S. ruminantiurn, with the exception of the one Mitsuokella multiacidus strain examined. Phytase activity varied greatly among positive strains but activities as high as 703 nmol phosphate released (ml culture)" were measured for a S. ruminantium strain and 387 nmol phosphate released (ml culture)" for the Mitsuokella multiacidus strain.

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“…The use of phytase in poultry diets has become widespread, because it reduces the P content of manure and can replace inorganic P in feed, thereby reducing P excretion and feed costs. Research on the effects of phytase in broiler diets has been extensive (Broz et al 1994;Silversides et al 2004;Selle et al 2007); research on the effects of phytase in layer diets has been less extensive (Lim et al 2003). Leske and Coon (1999) reported that commercial phytase increases the release of phytate P from various feedstuffs fed to layers and broilers between 23% and 34.9% and between 46.8% and 72.4%, respectively.…”

Section: Introductionmentioning

confidence: 99%

Effects of supplementation of multi-enzyme and multi-species probiotic on production performance, egg quality, cholesterol level and immune system in laying hens

Khan¹,

Atif

Mukhtar

et al. 2011

Journal of Applied Animal Research

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A study was conducted to evaluate enzyme and probiotic feed supplements as alternative feed additives to alleviate the problems associated with the withdrawal of antibiotics from layer diet. A total of 180 Hy-Line W-98 hens, 40 weeks old, were assigned into four treatment groups so that there were 45 laying hens in each group. Four dietary treatments were randomly assigned to the four groups of hens. Hens in Group 1 were fed basal diet only (negative control), Group 2 was fed basal diet ' antibiotic at a level of 2.0 g/kg (positive control), Group 3 was fed basal diet ' multi-enzyme at a level of 2.0 g/kg (ES) and Group 4 was fed basal diet ' multi-species probiotic at a level of 0.5 g/kg (PS). The results showed that addition of either enzyme or probiotic supplementation to the basal diet significantly increased the egg production, egg weight and egg mass of hens than the negative control group. There was no significant difference in feed intake among treatments, although the feed conversion improved with the addition of antibiotic, enzyme and probiotic than the negative control. Over the 70-day trial period, weight gain was higher than the negative control for birds fed the diet containing probiotic. There was no significant effect on mortality during the study. Haugh unit score was significantly increased in the groups fed the ES and PS diets when compared with negative control group. Egg shape index, specific gravity, yolk index, shell weight, shell thickness and damaged eggs did not differ significantly among the laying hens of all dietary groups. High-density lipoprotein-cholesterol was significantly increased by probiotic supplementation compared with other dietary groups. Dietary treatments did not influence eosinophils and monocytes, increased lymphocyte and decreased heterophil and H:L ratio. The geometric means haemagglutination inhibition titres of birds fed on diets containing antibiotic, enzyme and probiotic supplementation were higher from 28 to 70 days than that of negative control. It may be concluded that the supplementation of enzyme and probiotic in layer diets did not appear to cause any adverse effects on egg production, egg quality and immunity compared with the negative control laying hens and non-antibiotic feed additives can be used as alternative. Moreover, the dietary supplementation of probiotic may lead to the development of low-cholesterol chicken eggs as demanded by health-conscious consumers.

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Effects of supplemental phytase on performance and phosphorus utilisation in broiler chickens fed a low phosphorus diet without addition of inorganic phosphates

Cited by 124 publications

References 3 publications

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

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

Phytase activity of anaerobic ruminal bacteria

Effects of supplementation of multi-enzyme and multi-species probiotic on production performance, egg quality, cholesterol level and immune system in laying hens

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