(a) Acceptable daily intake (ADI). The ADI for total residues of zilpaterol is 0.083 micrograms per kilogram of body weight per day.
(b) Tolerances--(1) Cattle--(i) Liver (the target tissue). The tolerance for zilpaterol freebase (the marker residue) is 12 parts per billion (ppb).
(1) Cattle--(i) Liver (the target tissue). The tolerance for zilpaterol freebase (the marker residue) is 12 parts per billion (ppb).
(i) Liver (the target tissue). The tolerance for zilpaterol freebase (the marker residue) is 12 parts per billion (ppb).
(ii) [Reserved]
(2) [Reserved] [71 FR 53005, Sept. 8, 2006]