Virginiamycin.

(a) Acceptable daily intake (ADI). The ADI for total residue of virginiamycin is 250 µg/kg of body weight per day. (b) Tolerances. The tolerances for virginiamycin are: (1) Cattle. Edible tissues (excluding milk): Not required. (2) Chickens. Edible tissues (excluding eggs): Not required. (3) Swine. (i) Kidney, skin, and fat: 0.4 ppm. (ii) Liver: 0.3 ppm. (iii) Muscle: 0.1 ppm. (c) Related conditions of use. See § 558.635 of this chapter. [84 FR 32993, July 11, 2019, as amended at 85 FR 18121, Apr. 1, 2020]