This Decree of the Ministry of Agriculture amends 21 points of the Decree on the prohibition of administering certain substances to animals. In particular, the Decree establishes provisions concerning the prohibition on the use of in stockfarming of certain substances and preparations, and conditions of their exceptional use. The Decree amends also the procedure of monitoring of the presence of prohibited substances, residues and contaminating substances which can be harmful to human health in animals, animal products, animal feed and drinking water.