The surveys provided for in Article 1 shall be conducted in such a way as to provide a breakdown of the pig population into at least the following categories: ...
C. fattening pigs, including cull boars and cull sows with a live weight:
(a) of 50 kg or more but less than 80 kg;
(b) of 80 kg or more but less than 110 kg;
(c) of 110 kg or more ...
