Abstract This guidance document is intended to assist the applicant in the preparation and the presentation of an application, as foreseen in Article 7.6 of Regulation (EC) No 1831/2003, for the authorisation of additives for use in animal nutrition. It specifically covers the assessment of the efficacy of feed additives. Draft Endorsed by the FEEDAP Panel 28 November 2018 Submitted for public consultation 4 December 2017 End of public consultation 28 January 2018 Adoption by the FEEDAP Panel 17 April 2018 Implementation date 1 September 2018