Effect of Supplementation of Two Different Sources of Phytase on Egg Production Parameters in Laying Hens and Nutrient Digestiblity

Jalal, M. A.; Scheideler, S. E.

doi:10.1093/ps/80.10.1463

Cited by 80 publications

(58 citation statements)

References 15 publications

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“…This is consistent with the findings of other authors who found that feed intake increased in hens fed diets containing 0.1% NPP supplemented with A. niger phytase (Gordon and Roland, 1997;Jalal and Scheideler, 2001). Table 1 Throughout the entire experimental period (20-44 weeks), the values of feed conversion ratio calculated for one g of egg (Table 5) were much better in the control and in all phytase-supplemented treatments (ECP 125 -ECP 500 ) compared with the D group, reaching 7.3% in group C, 5.6% in treatment ECP 125 , 6.0% in treatment ECP 250 and about 4.3% in treatment ECP 500 .…”

Section: Resultssupporting

confidence: 93%

Efficacy of different levels of <i>Escherichia coli</i> phytase in hens fed maize-soyabean meal based diets with a decreased non-phytate phosphorus content

Kozłowski¹,

Jeroch²

2011

J. Anim. Feed Sci.

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The aim of this experiment was to determine the efficacy of different inclusion levels of new type phytase (ECP) synthesized by Escherichia coli and expressed in Pichia pastoris yeast (Optiphos) in maize-soyabean meal based diets on egg quality and the laying performance of laying hens aged from 20 to 44 weeks. Two hundred and twenty Lohmann Brown hens were randomly assigned to five treatments with 44 replicates each, and were kept individually in cages. The control diet (C) contained 2.5 g non-phytate phosphorus (NPP) and 35.5 g Ca/kg feed, and the experimental diets contained 1.3 g NPP and 33.0 g Ca/kg feed. The deficient diet (D) was offered without any addition of phytase, while the other treatments involved different levels of this enzyme: 125, 250 and 500 FTU/kg feed (treatments ECP 125 , ECP 250 and ECP 500 , respectively). Compared with the deficient diet, phytase supplementation significantly affected the performance of hens over the entire experimental period (number of eggs laid, egg mass and FCR), and egg quality parameters: egg yolk colour (significantly in week 24 of the laying period) and shell thickness (significantly in week 12 of the laying period).The results of the present study indicate that the supplementation of diets for laying hens with ECP improved performance parameters. The NPP content of layer diets based on maize meal and soyabean meal can be reduced by 1.2 g/kg provided that the diets are supplemented with ECP at 125-250 FTU per kg diet.

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Section: Resultssupporting

confidence: 93%

Efficacy of different levels of <i>Escherichia coli</i> phytase in hens fed maize-soyabean meal based diets with a decreased non-phytate phosphorus content

Kozłowski¹,

Jeroch²

2011

J. Anim. Feed Sci.

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“…Some authors have reported that a low dietary AP without supplemental F decreased performance characteristics, such as egg production, feed consumption or egg weight (Summers, 1995;Gordon and Roland, 1998;Boling et al, 2000;Francesch et al, 2005). In contrast, an increase in egg production, feed consumption, and egg weight (Um and Paik, 1999;Cabuk et al, 2004) and an improvement in the feed conversion (Jalal and Scheideler, 2001;Liebert et al, 2005) were found after F addition. The reduction of the feed conversion ratio and increase of the egg weight due to the F supplement is also evident from our results.…”

Section: Discussionmentioning

confidence: 99%

Efficacy of contrast levels of non-phytate phosphorus and Aspergillus niger phytase in hens fed wheat-maize-based diets

Englmaierová¹,

Dlouhá²,

Marounek³

et al. 2012

CZECH J ANIM SCI

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A 2 × 2 factorial design experiment examined the effect of dietary non-phytate phosphorus (NPP) (1.3 and 4.0 g/kg) and 3-phytase (F) (0 and 150 FTU/kg) on the performance indicators of hens, physical parameters of eggs, phosphorus (P) content of the eggshells, and the pH of the digestive tract of laying hens. Two hundred and forty hens (ISA Brown) were housed in enriched cages and fed a wheat-maize-based diet. A significant effect of both NPP and F was found for the yolk colour (P = 0.016) and shell thickness (P = 0.038). The F supplement or higher level of NPP alone and in combination increased the value of the yolk colour and shell thickness. The supplementation of the basal diet with F significantly increased the laying performance, especially with regard to the egg weight and feed conversion ratio. The higher dose of NPP had a negative effect on the egg production, feed intake, and feed conversion ratio. The lower level of NPP (1.3 g/kg) decreased the internal egg quality and shell quality, except for the shell strength. In contrast, the addition of 3-phytase to the diet increased the shell thickness and shell weight. The P content in the eggshells was not influenced by the dietary treatment. The higher level of NPP or F increased the pH in the gizzard to a value suitable for F activity. The hens fed a diet containing 1.3 g/kg NPP achieved a higher performance; moreover, the F supplement at 150 FTU/kg increased the external quality of the eggs.Keywords: laying hen; egg production; feed intake; eggshell quality; pH Mineral phosphorus (P) is important for proper bone development, formation of eggshells, and metabolism of laying hens. Approximately 20-50% of plant P is available in a poultry diet, and the rest is present in the form of phytate. Phytate P is biologically less available to poultry due to either insufficient quantity or the lack of secretion of phytase (F), which hydrolyses phytic acid in the digestive tract (Ravindran et al., 1995;Sebastian et al., 1998).As shown by the results of Swiatkiewicz et al. (2010), reducing the dietary levels of Ca (from 3.70 to 3.25%) and P (from 0.65 to 0.60%) significantly decreased the percentage of the eggshell, thickness, density, and breaking strength of the eggshell. However, de Faria et al. (1999) observed decreases in the egg production, egg weight, and egg mass without alterations in the eggshell quality characteristics in hens fed diets containing 0.35% of total P as opposed to 0.55% of total P. Sohail et al. (2001) observed a reduction of egg production (by 8.5 and 6.8%) and feed consumption due to decreases in the non-phytate phosphorus (NPP) from 0.40 and 0.25% to 0.09%. Based on the findings of Skřivan et al. (2010), 0.27% of available phosphorus (AP) in a wheat-based diet and 0.30% of the AP in a maizebased diet are adequate for hens having an intake of 115 g of feed containing 3.5% Ca without a negative impact on the performance or egg quality. According to a study by Rodrigues et al. (1998), levels of 0.35 and 0.25% of AP for the initial an...

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“…Phytase is commonly supplemented in laying hen diets to improve phytate phosphorus (P) availability and retention and ultimately to reduce excretion (Ravindran et al, 2000, Jalal and Scheideler, 2001, Gao et al, 2013, Gosh et al, 2015. Phytate is the main phosphorus source in the plant-based feed ingredients, which not only has limited availability to laying hens, but can also reduce the availability of other nutrients.…”

Section: Introductionmentioning

confidence: 99%

“…Phytase enzymes have the ability to hydrolyse phytate, releasing P which reduces the formation of phytatemineral complexes, increasing the bioavailability of minerals (Kornegay et al, 1996, Jalal andScheideler, 2001). In addition to the P and Ca release, inclusion of phytase in the diet may reduce the negative impact of phytate on AA and starch digestion, improving digestibility of dietary AA and energy.…”

Section: Introductionmentioning

confidence: 99%

Supplementation of Buttiauxella sp. 6-phytase to commercial laying hen diets with reduced nutrient density on productive performance and egg quality

Dersjant-Li¹,

Millán²,

Casabuena³

et al. 2018

JAAN

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SummaryA study was conducted to evaluate productive performance in laying hens fed diets with reduced nutrient density based on the nutritional contribution of a Buttiauxella phytase in laying-hen diets from 21-57 weeks of age. A commercial laying hen diet was offered ad libitum to the 480 ISA Brown laying hens from 18-21 weeks of age. From 21 weeks onwards, the hens received one of four dietary treatments: a positive control (PC) diet, a down specified diet (DS1) + phytase at 300 FTU/kg, a second downspecified diet (DS2) + phytase at 600 FTU/kg and a third test diet formulated as per DS1 + phytase at 1,200 FTU/kg feed. The PC was formulated based on ISA breeder recommendations. DS1 was formulated with reduction of 0.149% available P, 0.134% Ca, 55 kcal/kg AME, 0.33% CP, digestible amino acids (up to 0.015%) and 0.013% Na based on the contribution of Buttiauxella phytase at 300 FTU/kg. DS2 was formulated with reduction of 0.177% available P, 0.159% Ca, 60 kcal/kg AME, 0.61% CP, digestible amino acids (up to 0.028%) and 0.02% Na based on the contribution of Buttiauxella phytase at 600 FTU/kg. Every dietary treatment was fed to 12 cages containing 10 hens each. The trial treatments did not include a full, DS negative control, as ethical considerations regarding birds' welfare when feeding such diets over such an extended period of time did not permit this. No significant differences were seen in hen-day egg production, feed intake, egg weight, feed to egg mass ratio, shell, yolk or albumen proportion, unsaleable eggs or shell breaking strength in laying hens fed the PC diet or the DS diets with added phytase. Yolk colour increased significantly with phytase supplementation. Supplementing the DS1 diet with 300 FTU and the DS2 diet with 600 FTU resulted in non-significant differences in tibia ash, Ca and P, compared to the PC diet. The data from this study indicated that applying the nutrient contributions for Buttiauxella phytase at 300 and 600 FTU/kg maintained the egg production, BW and egg quality parameters compared to PC. The best economic efficiency value during the whole experimental period was recorded with phytase at 600 FTU/kg when full matrix values are used. When commercial diets are formulated based on ISA breeder recommendations, lowering diet nutrient density while supplementing with phytase reduced the overall diet cost, which should contribute to the profitability of egg production.

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Effect of Supplementation of Two Different Sources of Phytase on Egg Production Parameters in Laying Hens and Nutrient Digestiblity

Cited by 80 publications

References 15 publications

Efficacy of different levels of <i>Escherichia coli</i> phytase in hens fed maize-soyabean meal based diets with a decreased non-phytate phosphorus content

Efficacy of different levels of <i>Escherichia coli</i> phytase in hens fed maize-soyabean meal based diets with a decreased non-phytate phosphorus content

Efficacy of contrast levels of non-phytate phosphorus and Aspergillus niger phytase in hens fed wheat-maize-based diets

Supplementation of Buttiauxella sp. 6-phytase to commercial laying hen diets with reduced nutrient density on productive performance and egg quality

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