21 C.F.R. Subpart B—Radiation and Radiation Sources
Title 21 - Food and Drugs
Ionizing radiation for treatment of complete diets for animals may be safely used under the following conditions: (a) Energy sources. Ionizing radiation is limited to: (1) Gamma rays for sealed units of the radionuclides cobalt-60 or cesium-137. (2) Electrons generated from machine sources at energy levels not to exceed 10 million electron volts. (b) Uses. (1) The ionizing radiation is used or intended for use in single treatment as follows: (2) If an irradiated feed ingredient is less than 5 percent of the final product, the final product can be irradiated without being considered to be re-irradiated. [51 FR 5993, Feb 19, 1986; 51 FR 8315, Mar. 11, 1986, as amended at 58 FR 18148, Apr. 8, 1993; 66 FR 18540, Apr. 10, 2001] Ionizing radiation for the treatment of complete poultry diets and poultry feed ingredients may be safely used as follows: (a) Energy sources. Ionizing radiation is limited to gamma rays from sealed units of cobalt-60. (b) Limitation. The ionizing radiation is used for feed or feed ingredients that do not contain drugs. (c) Use. Ionizing radiation is used as a single treatment for rendering complete poultry diets or poultry feed ingredients salmonella negative as follows: (1) Minimum dose 2.0 kiloGrays (kGy) (0.2 megarad (Mrad)); maximum dose 25 kGy (2.5 megarads Mrad). The absorbed dose of irradiation is to be based on initial concentration of salmonella using the relationship that 1.0 kGy (0.1 Mrad) reduces salmonella concentration by one log cycle (one decimal reduction). (2) Feeds treated by irradiation should be formulated to account for nutritional loss. (3) If an irradiated feed ingredient is less than 5 percent of the final product, the final product can be irradiated without being considered to be reirradiated. [60 FR 50099, Sept. 28, 1995]
Title 21: Food and Drugs
PART 579—IRRADIATION IN THE PRODUCTION, PROCESSING, AND HANDLING OF ANIMAL FEED AND PET FOOD
Subpart B—Radiation and Radiation Sources
§ 579.22 Ionizing radiation for treatment of animal diets.
------------------------------------------------------------------------ Food for irradiation Limitations Use------------------------------------------------------------------------Bagged complete diets, packaged Absorbed dose: Not Microbial feeds, feed ingredients, bulk to exceed 50 disinfection, feeds, animal treats and chews. kiloGrays. Feeds control or and feed elimination ingredients treated by irradiation should be formulated to account for nutritional loss.------------------------------------------------------------------------
§ 579.40 Ionizing radiation for the treatment of poultry feed and poultry feed ingredients.
