Section 556.226 - Enrofloxacin(a)Acceptable daily intake (ADI). The ADI for total residue of enrofloxacin is 3 [MICRO]g/kg of body weight per day.(b)Tolerances. The tolerances for enrofloxacin are: (1)Cattle. Liver (target tissue): 0.1 ppm desethylene ciprofloxacin (marker residue).(2)Swine. Liver (target tissue): 0.5 ppm enrofloxacin (marker residue).(c)Related conditions of use. See §§ 516.812 and 522.812 of this chapter.84 FR 32993, July 11, 2019, as amended at 86 FR 13188, Mar. 8, 2021 84 FR 32993, 9/9/2019; as amended at 86 FR 13188, 3/8/2021