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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: 21CFR520.2345c]



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. 520.2345c Tetracycline boluses.

(a) Specifications. Each bolus contains 500 milligrams of tetracycline (as the hydrochloride).

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

(c) Related tolerances. See § 556.720 of this chapter.

(d) Conditions of use. Calves - (1) Amount. 10 milligrams per pound of body weight per day in divided doses.

(i) Indications for use. Control and treatment of bacterial enteritis (scours) caused by E. coli and bacterial pneumonia caused by Pasteurella spp., Hemophilus spp., and Klebsiella spp.

(ii) Limitations. Administer orally for 3 to 5 days; do not slaughter animals for food within 14 days of treatment; use as sole source of tetracycline.

(2) Amount. 10 milligrams per pound of body weight per day in two divided doses.

(i) Indications for use. Treatment of bacterial pneumonia caused by organisms susceptible to tetracycline, bacterial enteritis caused by E. coli, and salmonella organisms susceptible to tetracycline.

(ii) Limitations. Administer orally for not more than 5 days; do not slaughter animals for food within 12 days of treatment; use as sole source of tetracycline.

[57 FR 37328, Aug. 18, 1992, as amended at 67 FR 78355, Dec. 24, 2002; 79 FR 28831, May 20, 2014; 81 FR 67151, Sept. 30, 2016]

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