[Code of Federal Regulations]
[Title 21, Volume 6]
[Revised as of April 1, 2007]
From the U.S. Government Printing Office via GPO Access
[CITE: 21CFR556.228]

[Page 354-355]
 
                        TITLE 21--FOOD AND DRUGS
 
CHAPTER I--FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN 
                          SERVICES (CONTINUED)
 
PART 556_TOLERANCES FOR RESIDUES OF NEW ANIMAL DRUGS IN FOOD--Table of 
 
     Subpart B_Specific Tolerances for Residues of New Animal Drugs
 
Sec.  556.228  Enrofloxacin.

    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.

[[Page 355]]

    (b) [Reserved]

[61 FR 56893, Nov. 5, 1996, as amended at 63 FR 49003, Sept. 14, 1998; 
70 FR 44049, Aug. 1, 2005]