Section 556.500 - Oxytetracycline(a)Acceptable daily intake (ADI). The ADI for total tetracycline residues (chlortetracycline, oxytetracycline, and tetracycline) is 25 [MICRO]g/kg of body weight per day.(b)Tolerances. The tolerances for the sum of tetracycline residues are:(1)Cattle.(iii) Fat and kidney: 12 ppm.(2)Chickens and turkeys.(iii) Fat and kidney: 12 ppm.(3)Finfish. Muscle (with adhering skin when edible): 2 ppm.(4)Lobster. Muscle: 2 ppm.(5)Swine and sheep.(iii) Fat and kidney: 12 ppm.(c)Related conditions of use. See §§ 520.1660c , 520.1660d , 520.1664 , 522.1660a , 522.1660b , 522.1662 , 522.1664 , 529.1660 , 558.450 , and 558.455 of this chapter. 84 FR 32993 , July 11, 2019, as amended at 85 FR 18121 , Apr. 1, 2020; 88 FR 16549 , Mar. 20, 2023, 88 FR 55567 , Aug. 16, 2023 84 FR 32993, 9/9/2019; as amended at 85 FR 18121, 4/1/2020; 88 FR 16549, 3/20/2023; 88 FR 55567, 8/16/2023