Oregon Revised Statutes Food and Other Commodities: Purity, Sanitation, Grades, Standards, Labels, Weights and Measures § 633.045

(1) If any poisonous, deleterious or nonnutritive ingredient is present in the feed in sufficient amount to render the feed injurious to health when fed in accordance with directions for use shown on the label.

(2) If any valuable constituent has been in whole or in part omitted or abstracted from the feed or any less valuable substance substituted for a valuable constituent.

(3) If the composition or quality of the feed falls below or differs from the composition or quality purported or represented on the feed labeling.

(4) If the feed contains added hulls, screenings, refuse screenings, straw, cobs or other high fiber material, unless the name of each material is stated on the label.

(5) If the feed contains pesticide residues or other chemicals in excess of amounts that, by rule, the State Department of Agriculture declares safe for feeding purposes. In adopting rules under this subsection the department may take into consideration the commonly permitted amounts of chemicals authorized by:

(6) If the feed contains a drug other than those permitted by rules adopted by the department. In adopting rules under this subsection, the department shall consider the current good manufacturing practice regulations for medicated feed premixes and for medicated feeds established under authority of the Federal Food, Drug and Cosmetic Act   1.

(7) If the feed is wild bird feed and contains viable noxious weed seeds in excess of amounts established by the department by rule.