Section 556.750 - Virginiamycin(a)Acceptable daily intake (ADI). The ADI for total residue of virginiamycin is 250 [MICRO]g/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.(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 84 FR 32993, 9/9/2019; as amended at 85 FR 18121, 4/1/2020