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2. European Commission. Regulation 68/2013/EU on the Catalogue of feed materials. Off J Eur Union. 2013;L29:1–64.
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4. Ministero delle risorse Agricole, Alimentari e Forestali. DM 13-4-1994. Approvazione dei metodi e analisi per il controllo ufficiale degli alimenti per animali. Gazzetta Ufficiale 123 28-5-1994, Suppl.82: 1–71
5. European Commission. Regulation 51/2013/EU amending Regulation 152/2009/EC as regards the methods of analysis for the determination of constituents of animal origin for the official control of feed. Off J Eur. Union 2013, L20/33.