19.—(1) Subject to paragraph 26(2) and paragraph 3 of Chapter B of Schedule 9, in the case of any compound feeding stuff for animals other than pet animals, all the feed materials shall be declared in the statutory statement in descending order of weight, either by their specific names or by the names of the categories in Part II of Schedule 10 to which they belong.
(2) The use of either of these forms of declaration shall preclude the use of the other, save—
(i)where the declaration is by categories and any feed material belongs to none of the categories described in Part II of Schedule 10, in which case that feed material, designated by its specific name, shall be listed in order by weight in relation to the categories; or
(ii)where, in the case of any feeding stuff intended for a particular nutritional purpose, paragraph 26(2) and paragraph 3 of Chapter B of Schedule 9 require the declaration of any feed material by its specific name, in which case any feed material to which those provisions do not apply may be declared by reference to the category to which it belongs.