Commission Implementing Regulation (EU) 2018/243 of 15 February 2018 concerning the authorisation of 3-hydroxybutan-2-one, pentan-2,3-dione, 3,5-dimethyl cyclopentan-1,2-dione, hexan-3,4-dione, sec-butan-3-onyl acetate, 2,6,6-trimethylcyclohex-2-en-1,4-dione and 3-methylnona-2-,4-dione as feed additives for all animal species (Text with EEA relevance. )