(73)For the performance of official controls and other official activities which are aimed at identifying possible violations to the rules including those perpetrated through fraudulent or deceptive practices, and in the field of animal welfare, the competent authorities should have access to updated, reliable and consistent technical data, to research findings, new techniques and expertise necessary for the correct application of Union legislation applicable in those two areas. For that purpose, the Commission should be able to designate, and rely on the expert assistance of, European Union reference centres for the authenticity and integrity of the agri-food chain and for animal welfare.