Case C-28/05: Judgment of the Court (Third Chamber) of 15 June 2006 (reference for a preliminary ruling from the College van Beroep voor het bedrijfsleven –Netherlands) — G.J. Dokter, Maatschap Van den Top, W. Boekhout v Minister van Landbouw, Natuur en Voedselkwaliteit (Agriculture — Control of foot-and-mouth disease — Directive 85/511/EEC — Directive 90/425/EEC — Examinations to detect foot-and mouth-disease carried out by a laboratory not listed in the annex to Directive 85/511/EEC — National authorities' discretion — Principle of proportionality — Principle of respect for the rights of the defence)