[Code of Federal Regulations]
[Title 21, Volume 6]
[Revised as of January 1, 2003]
From the U.S. Government Printing Office via GPO Access
[CITE: 21CFR579.40]

[Page 515]
 
                        TITLE 21--FOOD AND DRUGS
 
CHAPTER I--FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN 
                          SERVICES (CONTINUED)
 
PART 579--IRRADIATION IN THE PRODUCTION, PROCESSING, AND HANDLING OF ANIMAL FEED AND PET FOOD--Table of Contents
 
               Subpart B--Radiation and Radiation Sources
 
Sec.  579.40  Ionizing radiation for the treatment of poultry feed and poultry feed ingredients.

    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]