Case C-21/10: Judgment of the Court (Third Chamber) of 21 July 2011 (reference for a preliminary ruling from the Fővárosi Bíróság) — Károly Nagy v Mezőgazdasági és Vidékfejlesztési Hivatal (Common agricultural policy — EAGGF financing — Regulations (EC) No 1257/1999 and (EC) No 817/2004 — Community support for rural development — Support for agri-environmental production methods — Agri-environmental aid other than ‘livestock’ aid, the grant of which is conditional upon a certain density of livestock — Application of the integrated administration and control system — System for the identification and registration of bovine animals — Duty of national authorities to provide information on the conditions for eligibility)