Enzimas exógenas em dietas de frangos de corte: desempenho

Barbosa, N. A. A.; Sakomura, Nilva Kazue; Bonato, Melina Aparecida; Hauschild, Luciano; Oviedo-Rondón, E. O.

doi:10.1590/s0103-84782012000800027

Cited by 15 publications

(15 citation statements)

References 12 publications

(14 reference statements)

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“…These results are consistent with the findings of Barbosa et al (2012), who observed that the supplementation of enzyme blends to diets with reduced mineral and energy levels promoted similar feed intake and weight gain that broilers fed a standard diet during the starter phase. Brito et al (2006), using an enzyme complex containing amylase, protease, and xylanase, observed increased weight gain and improved feed conversion ratio in broilers between 1 to 21 days of age, as opposed to the findings of the present experiment.…”

Section: Enzyme Supplementation Of Broiler Feeds With Reduced Mineralsupporting

confidence: 92%

“…On the other hand, enzyme complex is derived from the fermentation with a single microorganism that synthesizes several enzymes. Barbosa et al (2012), studying the efficacy of enzymes in broiler diets, found that the addition of phytase, amylase, xylanase, and protease in diets with reduced metabolizable energy, calcium, and phosphorus content, promoted similar feed intake and weight gain than a diet with adequate nutrient levels. According to the authors, enzyme blends can be added to diets with reduced nutrient levels aiming to maintain broiler growth performance.…”

Section: Introductionmentioning

confidence: 99%

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Enzyme Supplementation of Broiler Feeds with Reduced Mineral and Energy Levels

Nunes

Abreu

Brito

et al. 2015

Rev. Bras. Cienc. Avic.

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An experiment was conducted with the purpose of evaluating enzyme blends on the performance, carcass traits, and bone mineralization of broilers. In total, 928 one-day-old Cobb 500 male chicks of were used. A completely randomized design with four treatments with eight replicates of 29 birds each was adopted. The evaluated treatments were: 1-Positive Control (PC), feed containing the nutritional recommendations of the genetic company's manual; 2-Negative Control (NC), feed with reductions of 75 kcal/kg AME and 0.10 and 0.12 percent points of phosphorus and calcium, respectively; 3 -NC + enzyme blend (amylase + β-glucanase, xylanase, and phytase; 250 g/t of feed) and 4 -NC + enzyme complex (phytase, amylase, xylanase, glucanase, pectinase, cellulase, and protease; 200 g/t of feed). Birds fed the diet with reduced nutrient levels (NC) presented the worst performance (p<0.05). The supplementation of the enzyme blend promoted similar (p<0.05) weight gain and feed conversion ratio as those obtained with the PC diet during the period of 1-21 days of age. During the phase of 22-42 days and the entire experimental period, weight gain and feed conversion ratio improved with the use of the enzyme combinations compared with the NC group, but remained lower than the PC group. Enzymes combinations did not affect (p>0.05) carcass or parts yields. The broilers fed the reduced-nutrient and energy diet presented lower (p<0.05) tibial ash, calcium, and phosphorus contents that the other treatments. The use of enzyme combinations improved the performance of broilers fed diets with reduced nutrient and energy levels.

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Section: Enzyme Supplementation Of Broiler Feeds With Reduced Mineralsupporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Enzyme Supplementation of Broiler Feeds with Reduced Mineral and Energy Levels

Nunes

Abreu

Brito

et al. 2015

Rev. Bras. Cienc. Avic.

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“…The results for the use of the additives indicate, as suggested by Barbosa et al (2012) and Wang et al (2016), that the use of an emulsifier and lipase have a more evident beneficial effect on the performance of broiler chickens in diets with a reduced level of metabolisable energy than diets with energy and nutritional levels attended (on-top concept), thus improving the energy efficiency of the diet (higher net energy) and consequently improving the characteristics of performance of the broilers at the end of the growing cycle.…”

Section: Concomitantsupporting

confidence: 56%

Use of emulsifier and lipase in feeds for broiler chickens

Oliveira

Balbino

Silva

et al. 2019

SCA

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The objective of this study was to evaluate the effect of exogenous emulsifier and lipase in diets on performance, digestibility, and organ biometry of broiler chickens. A completely randomised design with seven treatments and seven replications was adopted. The treatments were as follows: T1 (positive control; PC): 3000, 3100, 3200, and 3250 Kcal of metabolisable energy (ME) kg-1 of diet for phases 1 to 10, 11 to 21, 22 to 31, and 32 to 37 days, respectively; T2: PC with reduction in ME of 30 Kcal kg-1 of diet; T3: PC with reduction in ME of 60 Kcal kg-1 of feed; T4 (negative control; NC): PC with reduction in ME of 90 Kcal kg-1 of feed; T5: NC with inclusion of exogenous lipase (10 000 U kg-1); T6: NC with inclusion of emulsifier (250 g t-1); and T7: NC with inclusion of lipase (10 000 U kg-1) and emulsifier (250 g t-1) in the period from 1 to 37 days of rearing. Performance characteristics (weight gain (WG), feed intake (FI), and feed conversion (FC)), carcass yield, cut yield, the relative weight of abdominal fat and organs (small intestine, liver, and pancreas), and relative intestinal length, in addition to dry matter digestibility (CDADM), ethereal extract (CDAEE), crude metabolisable energy (CMACE), and apparent metabolisable energy (AME) of the diets, were evaluated. In the initial phase, the CDAEE was higher for the PC group than for the emulsifier + lipase group. The AME determined in the final phase for the group supplemented with an emulsifier was higher by approximately 50 Kcal (EM) than the NC group. The WG of the lipase group was similar to that of the PC group. However, the groups with emulsifier and emulsifier + lipase showed a lower WG than the PC group. The additives used did not recover the FC to the same level observed in the PC group. The reduction in ME of 90 Kcal kg-1 generated a lower WG and worse FC. The use of both an emulsifier and lipase together produced results like to the PC group. The biometrics of the organs and the carcass yield and cuts were not influenced by diets. Thus, it can be concluded that the inclusion of lipase and an emulsifier improves the performance of broilers given diets with reduced energy, although it does not improve the lipid utilisation of the diets.

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“…O nível de P da dieta deve atender não só as exigências das aves para a manutenção do desempenho, mas também deve fornecer quantidade de P suficiente para contribuir para a adequada mineralização óssea (Santos et al, 2008;Assuena et al, 2009;Barbosa et al, 2012). Os PN que resultaram no maior consumo de ração e ganho de peso dos frangos, no período de 8 a 42 dias, e no maior teor de cinzas nas tíbias, aos 42 dias de idade, foram os PN 1, 2 e 5.…”

Section: Pnunclassified

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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Enzimas exógenas em dietas de frangos de corte: desempenho

Abstract: RESUMO O experimento foi conduzido para avaliar a eficiência de enzimas exógenas em dietas sobre o desempenho de frangos de corte. Um total de 1440 pintos de corte machos (Cobb

Cited by 15 publications

References 12 publications

Enzyme Supplementation of Broiler Feeds with Reduced Mineral and Energy Levels

Enzyme Supplementation of Broiler Feeds with Reduced Mineral and Energy Levels

Use of emulsifier and lipase in feeds for broiler chickens

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

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