[Code of Federal Regulations]
[Title 21, Volume 6]
[Revised as of January 1, 2003]
From the U.S. Government Printing Office via GPO Access
[CITE: 21CFR558.369]

[Page 448-449]
 
                        TITLE 21--FOOD AND DRUGS
 
CHAPTER I--FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN 
                          SERVICES (CONTINUED)
 
PART 558--NEW ANIMAL DRUGS FOR USE IN ANIMAL FEEDS--Table of Contents
 
      Subpart B--Specific New Animal Drugs for Use in Animal Feeds
 
Sec.  558.369  Nitarsone.

    (a) Approvals. Type A medicated articles: 50 percent to 046573 in 
Sec.  510.600(c) of this chapter.
    (b) Related tolerances. See Sec.  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 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

[[Page 449]]

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]