s 7 Deleterious ingredients in feeding stuffs
(1) Any person who sells or offers or exposes for sale for use as food for cattle or poultry any article which contains any ingredient deleterious to cattle or poultry, or has in his possession, packed and prepared, for sale for such use any such article, shall be guilty of an offence against this Act unless he proves— (a) that he did not know and could not with reasonable care have known that the article contained a deleterious ingredient; and (b) where he obtained the article from some other person, that on demand by or on behalf of the prosecutor he gave all the information in his power with respect to the person from whom he obtained it, and as to the statutory statement given to him, and as to any mark applied to the article when he obtained it : Provided that proceedings for an offence under this section shall not be instituted unless the article has been sampled by an inspector in the prescribed manner on the premises on which it was sold or exposed or offered for sale or on which it was when prepared for sale or consignment, and the sample has been analysed in accordance with the provisions of this Act. (2) Any substance mentioned in the Fifth Schedule shall, if present in a feeding stuff or, where a maximum quantity with regard to the substance is indicated in the Fifth Schedule, if present in excess of that quantity, as the case may be, be -deemed to be a deleterious ingredient unless the contrary is proved.