Changes made by Commission Implementing Decision of 12 November 2013 concerning certain protection measures in relation to highly pathogenic avian influenza of the subtype H5N1 to be applied in the event of an outbreak of that disease in Switzerland and repealing Decision 2009/494/EC (notified under document C(2013) 7505) (2013/657/EU)
EU Decision 2013/657
The legislation Commission Implementing Decision of 12 November 2013 concerning certain protection measures in relation to highly pathogenic avian influenza of the subtype H5N1 to be applied in the event of an outbreak of that disease in Switzerland and repealing Decision 2009/494/EC (notified under document C(2013) 7505) (2013/657/EU) changes, newest first. Choose one to see each change.
From legislation.gov.uk's record of changes, the official one: see it there.