[Code of Federal Regulations] [Title 21, Volume 1] [Revised as of April 1, 2002] From the U.S. Government Printing Office via GPO Access [CITE: 21CFR520.100c] [Page 106] TITLE 21--FOOD AND DRUGS CHAPTER I--FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) PART 520--ORAL DOSAGE FORM NEW ANIMAL DRUGS--Table of Contents Sec. 520.100c Amprolium crumbles. (a) Specifications. Amprolium crumbles contain 1.25 percent amprolium. (b) Sponsor. See No. 050604 in Sec. 510.600(c) of this chapter. (c) Related tolerances. See Sec. 556.50 of this chapter. (d) Conditions of use. It is top-dressed on or thoroughly mixed in the daily feed ration of calves as follows: (1) Amount. 1.6 ounces of crumbles per 250 pounds of body weight per day (5 milligrams per kilogram of body weight). (i) Indications for use. As an aid in the prevention of coccidiosis caused by Eimeria bovis and E. zurnii. (ii) Limitations. Administer for 21 consecutive days during periods of exposure or when experience indicates that coccidiosis is likely to be a hazard. Withdraw 24 hours before slaughter. Use as sole source of amprolium. (2) Amount. 3.2 ounces of crumbles per 250 pounds of body weight per day (10 milligrams per kilogram of body weight). (i) Indications for use. As an aid in the treatment of coccidiosis caused by Eimeria bovis and E. zurnii. (ii) Limitations. Administer for 5 consecutive days. For satisfactory diagnosis, a microscopic fecal examination should be done by a veterinarian or diagnostic laboratory before treatment. When treating outbreaks, the drug should be administered promptly after diagnosis is determined. Withdraw 24 hours before slaughter. Use as sole source of amprolium. [42 FR 41855, Aug. 19, 1977, as amended at 62 FR 63270, Nov. 28, 1997]