21 CFR § 556.308
Halofuginone
June 25, 2020
(a) Acceptable daily intake (ADI). The ADI for total residue of halofuginone hydrobromide is 0.7 µg/kg of body weight per day.
(b) Tolerances. The tolerances for halofuginone (marker residue) are:
(1) Chickens. Liver (target tissue): 0.16 ppm.
(2) Turkeys. Liver (target tissue): 0.13 ppm.
(c) Related conditions of use. See §558.265 of this chapter.