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. 2019 Feb 28;17(2):e05607.
doi: 10.2903/j.efsa.2019.5607. eCollection 2019 Feb.

Modification of the terms of the authorisation of Natuphos® E as a feed additive for chickens for fattening or reared for laying/breeding

EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP); Vasileios Bampidis, Giovanna Azimonti, Maria de Lourdes Bastos, Henrik Christensen, Birgit Dusemund, Maryline Kouba, Mojca Kos Durjava, Marta López-Alonso, Secundino López Puente, Francesca Marcon, Baltasar Mayo, Alena Pechová, Mariana Petkova, Fernando Ramos, Yolanda Sanz, Roberto Edoardo Villa, Ruud Woutersen, Montserrat Anguita

Modification of the terms of the authorisation of Natuphos® E as a feed additive for chickens for fattening or reared for laying/breeding

EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP) et al. EFSA J. .

Abstract

The additive Natuphos® E presents 6-phytase produced by a genetically modified strain of Aspergillus niger. The additive is currently authorised in the EU for use as a feed additive for chickens for fattening, chickens reared for laying, pigs for fattening, sows, minor porcine species for fattening or for reproduction, turkeys for fattening, turkeys reared for breeding, all other avian species (excluding laying birds) and weaned piglets. The authorisation for chickens for fattening or reared for laying is at a minimum content of 750 FTU/kg feed. The applicant has requested to lower this dose to 125 FTU/kg feed. The Panel considered a total of three short-term trials and five long-term trials. In two short-term trials, the birds that received 125 FTU/kg feed showed a significantly better retention of phosphorus from the diets. Similarly, in two long-term trials, the birds that received 125 FTU/kg feed showed a significantly better performance. Consequently, the Panel concluded that the additive has a potential to improve the performance/phosphorus retention of the birds at the dose of 125 FTU/kg feed.

Keywords: 6‐phytase; chickens for fattening; digestibility enhancers; efficacy; zootechnical additives.

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References

    1. EFSA FEEDAP Panel (EFSA Panel on Additives and Products or Substances used in Animal Feed), 2011. Technical guidance: tolerance and efficacy studies in target animals. EFSA Journal 2011;9(5):2175, 15 pp. 10.2903/j.efsa.2011.2175 - DOI
    1. EFSA FEEDAP Panel (EFSA Panel on Additives and Products or Substances used in Animal Feed), 2012. Guidance for the preparation of dossiers for zootechnical additives. EFSA Journal 2012;10(1):2536, 19 pp. 10.2903/j.efsa.2012.2536 - DOI
    1. EFSA FEEDAP Panel (EFSA Panel on Additives and Products or Substances used in Animal Feed), 2017. Scientific opinion on the safety and efficacy of Natuphos® E (6‐phytase) as a feed additive for avian and porcine species. EFSA Journal 2017;15(11):5024, 35 pp. 10.2903/j.efsa.2017.5024 - DOI - PMC - PubMed

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