Home › CFR › Title 21 › Part 57921 CFR Part 579 — Irradiation in the Production, Processing, and Handling of Animal Feed and Pet FoodSubpart A — General Provisions§ 579.12— Incorporation of regulations in part 179.Subpart B — Radiation and Radiation Sources§ 579.22— Ionizing radiation for treatment of animal diets.§ 579.40— Ionizing radiation for the treatment of poultry feed and poultry feed ingredients.