Effect of microbial phytase on production performance of White Leghorn layers fed on a diet low in non-phytate phosphorus

Panda, A.K.; Rao, S.V. Rama; Raju, M.V.L.N.; Bhanja, S.K.

doi:10.1080/00071660500191098

Cited by 43 publications

(22 citation statements)

References 22 publications

(32 reference statements)

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“…In line also with the present results, Lim et al (2003) observed that phytase supplementation decreased the percentage of broken and soft-shell eggs. In contrast to the present results, Panda et al (2005) stated that neither MP supplementation nor decreasing NPP level (from 0.30-0.18%) in laying hen diets had a significant effect on egg quality traits (egg weight, Haugh units, shell weight, shell thickness, shell strength or egg specific gravity). Other investigators also failed to find positive effects of MP on percentages of egg yolk and egg albumen (Mohammed et al, 2010), shell thickness, egg specific gravity, yolk index and Haugh units (Afsari et al, 2013), eggshell quality (Musilova et al, 2014) or on all egg quality traits investigated (Lucky et al, 2014).…”

Section: Components (%) ------------------------------------------------contrasting

confidence: 55%

Performance, Egg Quality and Mineral Utilization of Dokki-4 Laying Hens Fed Diets Containing Three Levels of Nonphytate Phosphorus in Absence or Presence of Microbial Phytase, Citric Acid or Both

Rabie¹,

Ismail²,

Hassan³

et al. 2015

Asian J. of Animal and Veterinary Advances

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The present study was conducted to determine the effects of single and combined addition of Citric Acid (CA) and Microbial Phytase (MP) on performance, egg quality and mineral utilization of hens fed graded levels of nonphytate phosphorus (NPP). The NPP levels were 0.40, 0.30 and 0.20% without and with MP (0.05%), CA (2.0%) or both. Twelve groups of both 28 weeks old hens and cockerels were fed their respective experimental diets. Criteria evaluated were feed intake, egg production, egg weight, egg mass, feed conversion ratio, egg components, shell thickness, Haugh units, yolk index, tibia ash, tibia Ca, P, Mg, Cu and Zn and apparent retention of these minerals. Feeding the 0.2% NPP diet adversely affected (p<0.01) egg production, egg weight, feed intake, egg mass, feed conversion, percent eggshell, yolk index, shell thickness, tibia ash content and retention of Cu and Zn compared with their positive control. Although birds fed 0.3% NPP gave comparable performance and egg quality to their positive controls, tibia bone ash, tibia contents of Ca and P and retention of P, Cu and Zn of the former were significantly lower than the latter. The poor productive performance and egg quality due to feeding 0.2% NPP diet were completely corrected by MP but CA was not effective. Added MP can effectively prevent the reductions in performance and egg quality and either microbial phytase or citric acid may partially alleviate the depression of mineral utilization in birds fed the low NPP diets, without a synergistic positive effect for their combination.

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Section: Components (%) ------------------------------------------------contrasting

confidence: 55%

Performance, Egg Quality and Mineral Utilization of Dokki-4 Laying Hens Fed Diets Containing Three Levels of Nonphytate Phosphorus in Absence or Presence of Microbial Phytase, Citric Acid or Both

Rabie¹,

Ismail²,

Hassan³

et al. 2015

Asian J. of Animal and Veterinary Advances

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“…Beneficial effects of dietary phytase supplementation on egg production, feed intake and egg weight of laying hens have been reported (Panda et al, 2005, Hughes et al, 2008, Kozłowski and Jeroch, 2011, Valaja et al, 2013. In these studies, phytase was added to negative control diets with reduction of only P, not with reduction of Ca, dig AA and energy.…”

Section: Resultsmentioning

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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“…Increasing egg production as a result of tested enzyme supplementation may be due to that phytate presented in the most ingredients of poultry diet is capable of forming complexes with essential nutrients such as proteins and some inorganic cations. The use of phytase may release these essential nutrients thereby improving nutritional value of poultry diet, which resulted positively on productive performance of laying hens (Panda et al 2005). The response to the enzyme is not straightforward since it is relatively variable, depending upon factors such as bird age and type (Scott et al 2001), cereal grains, level and geographical locations (Chesson 2001), enzyme inclusion level (Karimi et al 2000) and feed processing (Svihus et al 2000).…”

Section: Resultsmentioning

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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Effect of microbial phytase on production performance of White Leghorn layers fed on a diet low in non-phytate phosphorus

Cited by 43 publications

References 22 publications

Performance, Egg Quality and Mineral Utilization of Dokki-4 Laying Hens Fed Diets Containing Three Levels of Nonphytate Phosphorus in Absence or Presence of Microbial Phytase, Citric Acid or Both

Performance, Egg Quality and Mineral Utilization of Dokki-4 Laying Hens Fed Diets Containing Three Levels of Nonphytate Phosphorus in Absence or Presence of Microbial Phytase, Citric Acid or Both

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

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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