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U.S. Department of Health and Human Services

CFR - Code of Federal Regulations Title 21

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Help | More About 21CFR
[Code of Federal Regulations]
[Title 21, Volume 6]
[Revised as of April 1, 2014]
[CITE: 21CFR558.369]



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 558 -- NEW ANIMAL DRUGS FOR USE IN ANIMAL FEEDS

Subpart B--Specific New Animal Drugs for Use in Animal Feeds

Sec. 558.369 Nitarsone.

(a) Approvals. Type A medicated articles: 50 percent to 054771 in 510.600(c) of this chapter.

(b) Related tolerances. See 556.60 of this chapter.

(c) [Reserved]

(d) Conditions of use. It is used as follows:

(1) Chickens and turkeys --(i) Amount. Nitarsone, 0.01875 percent.

(ii) Indications for use. As an aid in the prevention of blackhead.

(iii) Limitations. Early medication is essential to prevent spread of disease. Adequate drinking water must be provided near feeder at all times. The drug is not effective in preventing blackhead in birds infected more than 4 or 5 days. Discontinue use 5 days before slaughtering animals for human consumption to allow elimination of the drug from edible tissues. The drug is dangerous for ducks, geese, and dogs. Overdosage or lack of water may result in leg weakness or paralysis. Use as sole source of arsenic.

(2) Turkeys --(i) Amount. Nitarsone 0.01875 percent, plus bacitracin methylene disalicylate or bacitracin zinc 4 to 50 grams per ton.

(ii) Indications for use. As an aid in the prevention of blackhead, and for increased rate of weight gain and improved feed efficiency.

(iii) Limitations. For growing turkeys. Feed continuously as sole ration. Early medication is essential to prevent spread of disease. Adequate drinking water must be provided near feeders at all times. Overdosage or lack of water may result in leg weakness or paralysis. The drug is not effective in preventing blackhead in birds infected more than 4 or 5 days. Discontinue use 5 days before slaughtering animals for human consumption to allow elimination of the drug from edible tissues. The drug is dangerous for ducks, geese, and dogs. Use as sole source of arsenic.

[46 FR 47535, Sept. 29, 1981, as amended at 47 FR 14152, Apr. 2, 1982; 51 FR 7399, Mar. 3, 1986; 52 FR 2686, Jan. 26, 1987; 55 FR 8460, Mar. 8, 1990; 57 FR 8578, Mar. 11, 1992; 63 FR 39028, July 21, 1998; 71 FR 16223, Mar. 31, 2006; 79 FR 13545, Mar. 11, 2014]

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