[Code of Federal Regulations]
[Title 21, Volume 6]
[Revised as of April 1, 2001]
From the U.S. Government Printing Office via GPO Access
[CITE: 21CFR558.120]

[Page 387-388]
 
                        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. 558.120  Carbarsone (not U.S.P.).

    (a) Approvals. Type A medicated articles: (1) 37.5 percent to 046573 
in Sec. 510.600(c) of this chapter.
    (2) 25 percent carbarsone and 5 grams per pound bacitracin (as 
bacitracin methylene disalicylate) 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. (1) It is used for turkeys as follows:
    (i) Grams per ton. 227 to 340.5 (0.025 to 0.0375 percent).
    (a) Indications for use. As an aid in the prevention of blackhead.
    (b) Limitations. Feed continuously beginning 2 weeks before 
blackhead is expected and continue as long as prevention is needed; 
withdraw 5 days before

[[Page 388]]

slaughter; as sole source of organic arsenic.
    (ii) Grams per ton. 227 to 340.5 (0.025 to 0.0375 percent) 
carbarsone plus 10 grams per ton bacitracin from bacitracin methylene 
disalicylate.
    (a) Indications for use. As an aid in the prevention of blackhead; 
for increased rate of weight gain.
    (b) Limitations. Feed continuously beginning 2 weeks before 
blackhead is expected and continue as long as prevention is needed; 
withdraw 5 days before slaughter; as sole source of organic arsenic.
    (iii) Grams per ton. 227 to 340.5 (0.025 to 0.0375 percent) 
carbarsone plus 4 to 45 grams per ton bacitracin from bacitracin zinc.
    (a) Indications for use. As an aid in the prevention of blackhead, 
increased rate of weight gain, and improved feed efficiency.
    (b) Limitations. Feed continuously as sole ration. Withdraw 5 days 
before slaughter. As sole source of organic arsenic; as bacitracin zinc 
provided by Nos. 046573 and 063238 in Sec. 510.600(c) of this chapter.
    (2) Carbarsone (not U.S.P.) may be used in accordance with the 
provisions of this section in the combinations provided as follows:
    (i) Zoalene in accordance with Sec. 558.680.
    (ii) Amprolium as in Sec. 558.55.
    (iii) Bambermycins as in Sec. 558.95.

[41 FR 10995, Mar. 15, 1976, as amended at 42 FR 18617, Apr. 8, 1977; 46 
FR 46797, Sept. 22, 1981; 48 FR 2758, Jan. 21, 1983; 51 FR 7396, Mar. 3, 
1986; 52 FR 2687, Jan. 26, 1987; 53 FR 20843, June 7, 1988; 57 FR 7652, 
Mar. 4, 1992; 61 FR 515, Jan. 8, 1996; 61 FR 18082, Apr. 24, 1996; 62 FR 
61011, Nov. 14, 1997; 63 FR 27845, May 21, 1998]