21 CFR § 556.500 - Oxytetracycline.
(a) Acceptable daily intake (ADI). The ADI for total tetracycline residues (chlortetracycline, oxytetracycline, and tetracycline) is 25 µg/kg of body weight per day.
(b) Tolerances. The tolerances for the sum of tetracycline residues are:
(1) Cattle.
(i) Muscle: 2 ppm.
(ii) Liver: 6 ppm.
(iii) Fat and kidney: 12 ppm.
(iv) Milk: 0.3 ppm.
(2) Chickens and turkeys.
(i) Muscle: 2 ppm.
(ii) Liver: 6 ppm.
(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.
(i) Muscle: 2 ppm.
(ii) Liver: 6 ppm.
(iii) Fat and kidney: 12 ppm.
(6) Honey. 750 ppb.
(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.