12.—(1) Subject to paragraph (2), on holdings where there is a pig or poultry enterprise there shall be a storage requirement of 26 weeks.
(2) Holdings with less than 10 breeding sow places or 150 finishing pig places and holdings with less than 500 poultry places shall require 22 weeks storage.
(3) Holdings where there is a pig and/or poultry enterprise and another livestock enterprise shall require 26 weeks storage for the pig and/or poultry enterprise and 22 weeks storage for the other livestock enterprise.