Title 21

SECTION 556.113

556.113 Ceftiofur.

§ 556.113 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.