21 C.F.R. § 556.228 Enrofloxacin.
Title 21 - Food and Drugs
The acceptable daily intake for enrofloxacin is 3 micrograms per kilogram of body weight per day. (a) Cattle. A tolerance of 0.1 part per million for desethylene ciprofloxacin (marker residue) has been established in liver (target tissue) of cattle. (b) [Reserved] [61 FR 56893, Nov. 5, 1996, as amended at 63 FR 49003, Sept. 14, 1998; 70 FR 44049, Aug. 1, 2005]
Title 21: Food and Drugs
PART 556—TOLERANCES FOR RESIDUES OF NEW ANIMAL DRUGS IN FOOD
Subpart B—Specific Tolerances for Residues of New Animal Drugs
§ 556.228 Enrofloxacin.

