CFR > Title 21 - Food and Drugs > CHAPTER I—FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES > SUBCHAPTER E—ANIMAL DRUGS, FEEDS, AND RELATED PRODUCTS (parts 500 to 590) > PART 556—TOLERANCES FOR RESIDUES OF NEW ANIMAL DRUGS IN FOOD > SUBPART B—Specific Tolerances for Residues of New Animal Drugs (§556.34 to §556.770) > 556.275—Fenbendazole.

556.275—Fenbendazole.

(a) Acceptable daily intake (ADI). The ADI for total residues of fenbendazole is 40 micrograms per kilogram of body weight per day.
(b) Tolerances— (1) Cattle— The tolerance for parent fenbendazole (the marker residue) is 0.8 part per million (ppm).
(ii) Muscle. The tolerance for parent fenbendazole (the marker residue) is 0.4 ppm.
(iii) Milk. The tolerance for fenbendazole sulfoxide metabolite (the marker residue in cattle milk) is 0.6 ppm.
(2) Swine— (i) Liver (the target tissue). The tolerance for parent fenbendazole (the marker residue) is 6 ppm.
(ii) Muscle. The tolerance for parent fenbendazole (the marker residue) is 2 ppm.
(3) Turkeys— (i) Liver (the target tissue ). The tolerance for fenbendazole sulfone (the marker residue) is 6 ppm.
(ii) Muscle. The tolerance for fenbendazole sulfone (the marker residue) is 2 ppm.
(4) Goats— (i) Liver (the target tissue). The tolerance for parent fenbendazole (the marker residue) is 0.8 ppm.
(ii) Muscle. The tolerance for parent fenbendazole (the marker residue) is 0.4 ppm.

Code of Federal Regulations

[65 FR 20733, Apr. 18, 2000, as amended at 65 FR 41588, July 6, 2000; 65 FR 50914, Aug. 22, 2000]