21 C.F.R. § 556.735 – Tilmicosin.

(a) Acceptable daily intake (ADI). The ADI for total residue of tilmicosin is 25 µg/kg of body weight per day.
(b) Tolerances. The tolerances for tilmicosin (marker residue) are:
1. (1) Cattle.
  1. (i) Liver (target tissue): 1.2 ppm.
  2. (ii) Muscle: 0.1 ppm.
2. (2) Sheep.
  1. (i) Liver (target tissue): 1.2 ppm.
  2. (ii) Muscle: 0.1 ppm.
3. (3) Swine.
  1. (i) Liver (target tissue): 7.5 ppm.
  2. (ii) Muscle: 0.1 ppm.
(c) Related conditions of use. See §§ 520.2471, 522.2471, and 558.618 of this chapter.