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U.S. Department of Health and Human Services

CFR - Code of Federal Regulations Title 21

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The information on this page is current as of Oct 01, 2021.

For the most up-to-date version of CFR Title 21, go to the Electronic Code of Federal Regulations (eCFR).

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[Code of Federal Regulations]
[Title 21, Volume 6]
[CITE: 21CFR520.1660a]



TITLE 21--FOOD AND DRUGS
CHAPTER I--FOOD AND DRUG ADMINISTRATION
DEPARTMENT OF HEALTH AND HUMAN SERVICES
SUBCHAPTER E - ANIMAL DRUGS, FEEDS, AND RELATED PRODUCTS

PART 520 -- ORAL DOSAGE FORM NEW ANIMAL DRUGS

Sec. 520.1660a Oxytetracycline and carbomycin.

(a) Specifications. (1) Oxytetracycline: The antibiotic substance produced by growth of Streptomyces rimosus or the same antibiotic substance produced by any other means.

(2) Carbomycin: The antibiotic substance produced by growth of Streptomyces halstedii or the same antibiotic substance produced by any other means.

(b) Sponsor. See No. 054771 in § 510.600(c) of this chapter.

(c) Special considerations. The quantities of oxytetracycline in paragraph (e) of this section refer to the activity of oxytetracycline hydrochloride and the quantities of carbomycin listed refer to the activity of an appropriate standard.

(d) Related tolerances. See §§ 556.110 and 556.500 of this chapter.

(e) Conditions of use. It is used as oxytetracycline hydrochloride plus carbomycin base in drinking water of chickens as follows:

(1) Amount. Administer 1.0 gram of oxytetracycline and 1.0 gram carbomycin per gallon for not more than 5 days.

(2) Indications for use. As an aid in the prevention and treatment of complicated chronic respiratory disease (air-sac infection) caused by Mycoplasma gallisepticum and secondary bacterial organisms associated with chronic respiratory disease such as E. coli.

(3) Limitations. Not for use in chickens producing eggs for human consumption. Withdraw 24 hours before slaughter. Federal law restricts this drug to use by or on the order of a licensed veterinarian.

[40 FR 13838, Mar. 27, 1975, as amended at 78 FR 28825, May 20, 2014; 81 FR 94989, Dec. 27, 2016]

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