art 9 Sampling of breeding flocks
(1) The occupier must take samples from each breeding flock on the holding at the following times— (a) when the birds in the flock are chicks; (b) when the birds in the flock are four weeks old; (c) two weeks before the date the flock is expected to come into lay or move to the laying phase or laying unit; and (d) every second week during the laying period. (2) Sampling under paragraph (1)(a) to (c) must be done in accordance with Schedule 2 to this Order and sampling under paragraph (1)(d) must be done in accordance with point 2.2.2.1 of the Annex to the Commission Regulation (routine sampling at the initiative of the operator).