[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: 21CFR558.78]

[Page 382-383]
 
                        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. 558.78  Bacitracin zinc.

    (a) Approvals. To sponsors listed in Sec. 510.600(c) of this chapter 
for use as in paragraph (d) of this section as follows:
    (1) To 046573: 50 grams per pound as in paragraphs (d)(1)(i), 
(d)(1)(ii), (d)(1)(iii), (d)(1)(iv), and (d)(2) of this section.
    (2) To 063238: 10, 25, 40, and 50 grams per pound as in paragraphs 
(d)(1)(i), (d)(1)(ii), (d)(1)(v), (d)(1)(vi), (d)(2), and (d)(3) of this 
section.
    (3) To 000010: 5 and 50 grams per pound for chickens as in paragraph 
(d)(1)(i) of this section.
    (b) Special considerations. The quantities of antibiotics are 
expressed in terms of the equivalent amount of antibiotic standard.

[[Page 383]]

    (c) Related tolerances. See Sec. 556.70 of this chapter.
    (d) Conditions of use. (1) It is used as follows:

----------------------------------------------------------------------------------------------------------------
Bacitracin zinc in grams per   Combinations in grams
             ton                      per ton            Indications for use         Limitations        Sponsor
----------------------------------------------------------------------------------------------------------------
(i) 4 to 50.................  .......................  Chickens, turkeys, and  Growing chickens,         063238,
                                                        pheasants; for          turkeys, and              046573
                                                        increased rate of       pheasants.
                                                        weight gain and
                                                        improved feed
                                                        efficiency.
(ii) 5 to 20................  .......................  Quail; for increased    Growing quail; feed as    063238,
                                                        rate of weight gain     the Type C feed to        046573
                                                        and improved feed       starting quail
                                                        efficiency.             through 5 weeks of
                                                                                age.
(iii) 10 to 25..............  .......................  Laying chickens;        ......................     046573
                                                        improved feed
                                                        efficiency and
                                                        increased egg
                                                        production.
(iv) 10 to 50...............  .......................  Swine; increased rate   Growing and finishing      046573
                                                        of weight gain and      swine.
                                                        improved feed
                                                        efficiency.
(v) 20......................  .......................  Growing-finishing       In Type C feed........     063238
                                                        swine; increased rate
                                                        of weight gain.
(vi) 20 to 40...............  .......................  Growing-finishing       ......do..............     063238
                                                        swine; improved feed
                                                        efficiency.
----------------------------------------------------------------------------------------------------------------

    (2) It is used in feed for growing cattle at 35 to 70 milligrams per 
head per day as follows:
    (i) To aid in stimulating growth and improving feed efficiency.
    (ii) For increased rate of weight gain and improved feed efficiency; 
see sponsor 063238.
    (3) It may be used as approved in combination with:
    (i) Amprolium alone and with roxarsone as in Sec. 558.55.
    (ii) Amprolium and ethopabate alone and with roxarsone as in 
Sec. 558.58.
    (iii) Carbarsone as in Sec. 558.120.
    (iv) Clopidol alone and with roxarsone as in Sec. 558.175.
    (v) Decoquinate alone and with roxarsone as in Sec. 558.195.
    (vi) Hygromycin B alone and with penicillin as in Sec. 558.274.
    (vii) Lasalocid sodium alone or with roxarsone as in Sec. 558.311.
    (viii) Monensin alone and with roxarsone as in Sec. 558.355.
    (ix) Naracin as in Sec. 558.363.
    (x) Robenidine as in Sec. 558.515.
    (xi) Salinomycin alone and with roxarsone as in Sec. 558.550.
    (xii) Zoalene alone and with arsanilic acid or roxarsone as in 
Sec. 558.680.

[41 FR 10994, Mar. 15, 1976]

    Editorial Note: For Federal Register citations affecting 
Sec. 558.78, see the List of CFR Sections Affected, which appears in the 
Finding Aids section of the printed volume and on GPO Access.