subchapter_subject: "ANIMAL DRUGS, FEEDS, AND RELATED PRODUCTS"
part_code: "556"
part_subject: "TOLERANCES FOR RESIDUES OF NEW ANIMAL DRUGS IN FOOD"
subpart_code: "B"
subpart_subject: "Specific Tolerances for Residues of New Animal Drugs"
section_number: "556.150"
section_subject: "Chlortetracycline."
cfr_reference: "21 CFR 556.150"
title_name: "Title 21"
title_subject: "Food and Drugs"
parts_covered: "Parts 500 to 599"
revised_date: "Revised as of April 1, 2019"
publication_date: "As of April 1, 2019"
contains_description: "Containing a codification of documents of general applicability and future effect"
publication_info: "Published by the Office of the Federal Register National Archives and Records Administration as a Special Edition of the Federal Register"
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(a)Acceptable daily intake (ADI). The ADI for total residues of tetracyclines including chlortetracycline, oxytetracycline, and tetracycline is 25 micrograms per kilogram of body weight per day.
(b)Tolerances. (1) Tolerances are established for the sum of tetracycline residues in tissues of beef cattle, nonlactating dairy cows, calves, swine, sheep, chickens, turkeys, and ducks, of 2 parts per million (ppm) in muscle, 6 ppm in liver, and 12 ppm in fat and kidney.
(2)A tolerance is established for residues of chlortetracycline in eggs of 0.4 ppm.