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RONOZYME® NP for pigs for fattening

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EFSA Panel on EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP)

The additive RONOZYME® NP is a preparation of 6-phytase produced by a genetically modified strain of Aspergillus oryzae. This product is authorised in the European Union as a feed additive for poultry, weaned piglets, pigs for fattening and sows. The authorisation of RONOZYME® NP for use in pigs for fattening is at a minimum dose of 1,500 FYT/kg feed (recommended range 1,500–3,000 FYT/kg feed). The applicant requested to modify the terms of the authorisation for this species/category of animals, by lowering the minimum recommended dose from 1,500 to 1,000 FYT/kg feed. The EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP) concluded in previous assessments that the additive is safe for the target species, the consumers and the environment, and that the solid forms of the additive are regarded as dermal and eye irritants and all forms are assumed to be respiratory sensitisers. The reduction in the dose proposed would not change the previous conclusions regarding the safety for the target animals, consumer, user and environment. Three trials carried out with growing pigs were submitted in order to support the efficacy at the new recommended dose. In all the trials faecal apparent digestibility of phosphorus was measured, retention was measured only in one trial. The demonstration of efficacy for a phytase requires three studies showing positive and significant effects on the retention of phosphorus. In the trials submitted, the phosphorus retention was studied only in one trial; consequently the efficacy at the newly recommended dose was not demonstrated.

© European Food Safety Authority, 2016

RONOZYME® NP for pigs for fattening


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