Ceftiofur.

(a) Acceptable daily intake and acute reference dose —(1) Acceptable daily intake (ADI). The ADI for total residue of ceftiofur is 30 µg/kg of body weight per day. (2) Acute reference dose (ARfD). The ARfD for total residue of ceftiofur is 0.830 mg/kg of body weight. (b) Tolerances. The tolerances for desfuroylceftiofur (marker residue) are: (1) Cattle. (i) Kidney (target tissue): 0.4 ppm. (ii) Liver: 2 ppm. (iii) Muscle: 1 ppm. (iv) Milk: 0.1 ppm. (2) Chickens and turkeys. Edible tissues (excluding eggs): Not required. (3) Goats. (i) Kidney (target tissue): 8 ppm. (ii) Liver: 2 ppm. (iii) Muscle: 1 ppm. (iv) Milk: 0.1 ppm. (4) Sheep. Edible tissues (excluding milk): Not required. (5) Swine. (i) Kidney (target tissue): 0.25 ppm. (ii) Liver: 3 ppm. (iii) Muscle: 2 ppm. (c) Related conditions of use. See §§ 522.313a, 522.313b, 522.313c, and 526.313 of this chapter.