Commission Regulation (EC) No 1096/2009 of 16 November 2009 concerning the authorisation of an enzyme preparation of endo-1,4-beta-xylanase produced by Aspergillus niger (CBS 109.713) as a feed additive for chickens for fattening and the authorisation of a new use of this preparation as a feed additive for ducks (holder of authorisation BASF SE) and amending Regulation (EC) No 1458/2005 (Text with EEA relevance)