(a) A commercial feed shall be labeled as provided in this section.

(b) In case of a commercial feed, except a customer-formula feed, the feed shall be accompanied by a label bearing the following information: (1) The quantity statement; (2) the product name and the brand name, if any, under which the commercial feed is distributed; (3) the guaranteed analysis stated in such terms as the Commissioner of Agriculture, by regulation adopted in accordance with the provisions of chapter 54, determines is required to advise the user of the composition of the feed or to support claims made in the labeling. In all cases the substances or elements shall be determinable by laboratory methods such as the methods published by the Association of Official Analytical Chemists International; (4) the common or usual name of each ingredient used in the manufacture of the commercial feed provided the commissioner, by regulation adopted in accordance with the provisions of chapter 54, may permit the use of a collective term for a group of ingredients which perform a similar function, or he may exempt such commercial feeds, or any group thereof, from the requirement of an ingredient statement if he finds that such statement is not required in the interest of consumers; (5) the name and principal mailing address of the manufacturer or the person responsible for distributing the commercial feed; (6) adequate directions for use for all commercial feeds containing drugs and for such other feeds as the commissioner may require by regulation as necessary for their safe and effective use; and (7) such precautionary statements as the commissioner by regulation determines are necessary for the safe and effective use of the commercial feed.

(c) In the case of a customer-formula feed, the feed shall be accompanied by a label, invoice, delivery slip or other shipping document bearing the following information: (1) The name and address of the manufacturer; (2) the name and address of the purchaser; (3) the date of delivery; (4) the product name and quantity statement of each commercial feed and each other ingredient used in the mixture; (5) adequate directions for use for all customer-formula feeds containing drugs and for such other feeds as the commissioner may require by regulation as necessary for their safe and effective use; (6) the directions for use and precautionary statements as required by regulation; (7) if the feed contains a drug, (A) the purpose of the drug or the claim statement, and (B) the established name of each active drug ingredient and the amount of each drug used in the final mixture expressed in accordance with applicable regulations.