Section 556.760 - Zeranol(a)Acceptable daily intake (ADI). The ADI for total residue of zeranol is 1.25 [MICRO]g/kg of body weight per day.(b)Tolerances. The tolerances for zeranol are: (1)Cattle. Edible tissues (excluding milk): Not required.(2)Sheep. Edible tissues (excluding milk): 20 ppb.(c)Related conditions of use. See § 522.2680 of this chapter.