Commission Implementing Regulation (EU) 2017/731 of 25 April 2017 amending model veterinary certificates BOV-X, BOV-Y, BOV and OVI set out in Annexes I and II to Regulation (EU) No 206/2010, the model certificates GEL, COL, RCG and TCG set out in Annex II to Implementing Regulation (EU) 2016/759 and the model certificate for composite products set out in Annex I to Regulation (EU) No 28/2012 in relation to the rules for the prevention, control and eradication of certain transmissible spongiform encephalopathies