CFR > 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 (parts 500 to 590) > PART 520—ORAL DOSAGE FORM NEW ANIMAL DRUGS > 520.1660a—Oxytetracycline and carbomycin in combination.

520.1660a—Oxytetracycline and carbomycin in combination.

(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. 000069 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. 1.0 gram of oxytetracycline and 1.0 gram carbomycin per gallon.
(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. Administer for not more than 5 days; not for use in chickens producing eggs for human consumption; withdraw 24 hours before slaughter.