Federal regulations · Through 2026-08-25 · Newer source version available

21 CFR 558.78: Bacitracin zinc.

(a) Specifications. Type A medicated articles containing bacitracin zinc equivalent to 10, 25, 40, or 50 grams per pound bacitracin.
(b) Sponsor. See No. 054771 in § 510.600(c) of this chapter.
(c) Related tolerances. See § 556.70 of this chapter.
(d) Conditions of use. (1) It is used as follows:
Bacitracin zinc in grams per ton Combinations in grams per ton Indications for use Limitations Sponsor
(i) 4 to 50 Chickens: for increased rate of weight gain and improved feed efficiency Growing chickens 054771
(ii) 4 to 50 Turkeys and pheasants: for increased rate of weight gain and improved feed efficiency Growing turkeys and pheasants 054771
(iii) 5 to 20 Quail; for increased rate of weight gain and improved feed efficiency Growing quail; feed as the Type C feed to starting quail through 5 weeks of age 054771
(iv) 10 to 25 Laying chickens; improved feed efficiency and increased egg production 054771
(v) 10 to 50 Swine; increased rate of weight gain and improved feed efficiency Growing and finishing swine 054771
(vi) 20 Growing-finishing swine; increased rate of weight gain In Type C feed 054771
(vii) 20 to 40 Growing-finishing swine; improved feed efficiency 054771
(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 054771.
(3) Bacitracin zinc may also be used in combination with:
(i) Amprolium and ethopabate as in § 558.58.
(ii) Clopidol as in § 558.175.
(iii) Decoquinate as in § 558.195.
(iv) Lasalocid as in § 558.311.
(v) Monensin as in § 558.355.
(vi) Naracin as in § 558.363.
(vii) Nicarbazin as in § 558.366.
(viii) Robenidine as in § 558.515.
(ix) Salinomycin as in § 558.550.

Where this section sits in the code

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

(a) Specifications. Type A medicated articles containing bacitracin zinc equivalent to 10, 25, 40, or 50 grams per pound bacitracin.

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

(d) Conditions of use. (1) It is used as follows:

Bacitracin zinc in grams per ton Combinations in grams per ton Indications for use Limitations Sponsor

(i) 4 to 50 Chickens: for increased rate of weight gain and improved feed efficiency Growing chickens 054771

(ii) 4 to 50 Turkeys and pheasants: for increased rate of weight gain and improved feed efficiency Growing turkeys and pheasants 054771

(iii) 5 to 20 Quail; for increased rate of weight gain and improved feed efficiency Growing quail; feed as the Type C feed to starting quail through 5 weeks of age 054771

(iv) 10 to 25 Laying chickens; improved feed efficiency and increased egg production 054771

(v) 10 to 50 Swine; increased rate of weight gain and improved feed efficiency Growing and finishing swine 054771

(vi) 20 Growing-finishing swine; increased rate of weight gain In Type C feed 054771

(vii) 20 to 40 Growing-finishing swine; improved feed efficiency 054771

(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 054771.

(3) Bacitracin zinc may also be used in combination with:

(i) Amprolium and ethopabate as in § 558.58.

(ii) Clopidol as in § 558.175.

(iii) Decoquinate as in § 558.195.

(iv) Lasalocid as in § 558.311.

(v) Monensin as in § 558.355.

(vi) Naracin as in § 558.363.

(vii) Nicarbazin as in § 558.366.

(viii) Robenidine as in § 558.515.

(ix) Salinomycin as in § 558.550.

Collected 2026-08-27T02:24:47Z. Source file · JSON

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