Annex: Guidelines and procedures for the approval of identifiers and readers for the electronic identification of ovine and caprine animals pursuant to Regulation (EC) No 21/2004 - Commission Decision of 15 December 2006 implementing Council Regulation (EC) No 21/2004 as regards guidelines and procedures for the electronic identification of ovine and caprine animals (notified under document number C(2006) 6522) (Text with EEA relevance) (2006/968/EC)