N.Y. Comp. Codes R. & Regs. tit. 1, § 257.6 – Directions for use and precautionary statements.

(a) Directions for use and precautionary statements on the labeling of all commercial feeds (including customer-formula feeds) containing additives (including drugs, special-purpose additives, or non-nutritive additives) shall:
1. (1) be adequate to enable safe and effective use for the intended purpose by users with no special knowledge of the purpose and use of such feeds; and
2. (2) include, but not be limited to, all information prescribed by all applicable regulations under the Federal Food, Drug and Cosmetic Act.
(b) Adequate directions for use and precautionary statements are required for feeds containing nonprotein nitrogen as provided in section 257.7 of this Part.
(c) Adequate directions for use and precautionary statements necessary for safe and effective use are required on all commercial feeds distributed to supply particular dietary needs or for supplementing or fortifying the usual diet or ration with any vitamin, mineral, or other dietary nutrient or compound.