Commission Implementing Regulation (EU) 2017/1914 of 19 October 2017 concerning the authorisation of salinomycin sodium (Sacox 120 microGranulate and Sacox 200 microGranulate) as a feed additive for chickens for fattening and chickens reared for laying and repealing Regulations (EC) No 1852/2003 and (EC) No 1463/2004 (holder of authorisation Huvepharma NV) (Text with EEA relevance. )