21 CFR 558.128
§ 558.128 Chlortetracycline.
United States · 21 CFR — Food and Drugs · Status: effective
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- 21 CFR 558.128, § 558.128 Chlortetracycline, United States, version 1 as recorded 2026-07-09, yourstate.us, https://yourstate.us/provision/87850
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Full text
(a) Specifications. Type A medicated articles containing either chlortetracycline calcium complex equivalent to chlortetracycline hydrochloride, or for products intended for use in milk replacer, chlortetracycline hydrochloride.
(b) Sponsors. See sponsors in § 510.600(c) of this chapter as follows:
(1) No. 054771: 50, 70, 80, 90, or 100 grams per pound (g/lb) Type A medicated article.
(2) No. 066104: 10, 20, 30, 50, 70, or 100 g/lb of Type A medicated article.
(3) No. 069254: 50, 90, or 100 g/lb of Type A medicated article.
(c) Related tolerances. See § 556.150 of this chapter.
(d) Special considerations.
(1) Federal law restricts medicated feed containing this veterinary feed directive (VFD) drug to use by or on the order of a licensed veterinarian. See § 558.6 for additional requirements.
(2) The expiration date of VFDs for chlortetracycline medicated feeds must not exceed 6 months from the date of issuance. VFDs for chlortetracycline shall not be refilled.
(3) In milk replacers or starter feed; include on labeling the warning: “A withdrawal period has not been established for this product in preruminating calves. Do not use in calves to be processed for veal.”
(4) Manufacture for use in free-choice feeds as in paragraph (e)(4)(vi) of this section must conform to § 510.455 of this chapter.
(5) When manufactured for use as in paragraph (e)(5)(iii) of this section, include on labeling the warning: “Psittacosis, avian chlamydiosis, or ornithosis is a reportable communicable disease, transmissible between wild and domestic birds, other animals, and man. Contact appropriate public health and regulatory officials.”
(e) Conditions of use—(1) Chickens. It is used as follows:
(2) Turkeys. It is used as follows:
(3) Swine. It is used as follows:
(4) Cattle. It is used as follows:
(5) Minor species. It is used as follows:
(6) It is used as a free-choice, loose mineral Type C feed as follows:
(i) Specifications.
(ii) Amount. 6,000 grams per ton.
(iii) Indications for use. Beef and nonlactating dairy cattle: As an aid in the control of active infection of anaplasmosis caused by Anaplasma marginale susceptible to chlortetracycline.
(iv) Limitations. Feed continuously on a free-choice basis at a rate of 0.5 to 2.0 mg chlortetracycline per pound of body weight per day.
(v) Sponsors. See Nos. 054771 and 069254 in § 510.600(c) of this chapter.
Legislative history
This is a federal regulation, adopted through agency rulemaking under the Administrative Procedure Act — not enacted by a recorded vote of Congress.