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

21 CFR 558.515: Robenidine.

(a) Specifications. Type A medicated articles containing 30 grams per pound.
(b) Sponsor. See No. 054771 in § 510.600(c) of this chapter.
(c) Related tolerances. See § 556.580 of this chapter.
(d) Special considerations. Type C feed containing robenidine hydrochloride must be fed within 50 days from the date of manufacture. Do not use in Type B or Type C medicated feeds containing bentonite.
(e) Conditions of use. It is used in feed for chickens as follows:
Robenidine hydrochloride in grams/ton Combination in grams/ton Indications for use Limitations Sponsor
30 (0.0033 pct) Broiler chickens: As an aid in the prevention of coccidiosis caused by E. mivati, E. brunetti, E. tenella, E. acervulina, E. maxima, and E. necatrix. Feed continuously as sole ration. Do not feed to chickens producing eggs for food. Withdraw 5 days prior to slaughter. 054771
Bacitracin (as bacitracin methylenedisalicylate) 4 to 30 For broiler and fryer chickens: As an aid in the prevention of coccidiosis caused by E. mivati, E. brunetti, E. tenella, E. acervulina, E. maxima, and E. necatrix. For increased rate of weight gain. Feed continuously as sole ration. Do not feed to laying chickens. Withdraw 5 days prior to slaughter. 054771
Bacitracin (as bacitracin methylenedisalicylate) 27 to 50 For broiler and fryer chickens: As an aid in the prevention of coccidiosis caused by E. mivati, E. brunetti, E. tenella, E. acervulina, E. maxima, and E. necatrix. For improved feed efficiency. Feed continuously as sole ration. Do not feed to laying chickens. Withdraw 5 days prior to slaughter. 054771
Bacitracin (as bacitracin methylenedisalicylate) 50 For broiler and fryer chickens: As an aid in the prevention of necrotic enteritis caused or complicated by Clostridium spp. or other organisms susceptible to bacitracin. Feed continuously as sole ration. Do not feed to laying hens. Withdraw 5 days before slaughter. 054771
Bacitracin (as bacitracin methylenedisalicylate) 100 to 200 For broiler and fryer chickens: As an aid in the control of necrotic enteritis caused or complicated by Clostridium spp. or other organisms susceptible to bacitracin. To control a necrotic enteritis outbreak, start medication at first clinical signs of disease; administer continuously for 5 to 7 days or as long as clinical signs persist, then reduce bacitracin methylenedisalicylate to prevention level (50 g/ton). Do not feed to laying hens. Withdraw 5 days before slaughter. 054771
Bacitracin (as bacitracin zinc) 4 to 30 For broiler and fryer chickens: As an aid in the prevention of coccidiosis caused by E. mivati, E. brunetti, E. tenella, E. acervulina, E. maxima, and E. necatrix. For increased rate of weight gain. Feed continuously as sole ration. Do not feed to laying chickens. Withdraw 5 days prior to slaughter. 054771 054771
Bacitracin (as bacitracin zinc) 27 to 50 For broiler and fryer chickens: As an aid in the prevention of coccidiosis caused by E. mivati, E. brunetti, E. tenella, E. acervulina, E. maxima, and E. necatrix. For improved feed efficiency. Feed continuously as sole ration. Do not feed to laying chickens. Withdraw 5 days prior to slaughter. 054771 054771
(f) Robenidine may also be used in combination with:
(1) Chlortetracycline as in § 558.128.
(2) Lincomycin as in § 558.325.
(3) Oxytetracycline as in § 558.450.

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 30 grams per pound.

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

(d) Special considerations. Type C feed containing robenidine hydrochloride must be fed within 50 days from the date of manufacture. Do not use in Type B or Type C medicated feeds containing bentonite.

(e) Conditions of use. It is used in feed for chickens as follows:

Robenidine hydrochloride in grams/ton Combination in grams/ton Indications for use Limitations Sponsor

30 (0.0033 pct) Broiler chickens: As an aid in the prevention of coccidiosis caused by E. mivati, E. brunetti, E. tenella, E. acervulina, E. maxima, and E. necatrix. Feed continuously as sole ration. Do not feed to chickens producing eggs for food. Withdraw 5 days prior to slaughter. 054771

Bacitracin (as bacitracin methylenedisalicylate) 4 to 30 For broiler and fryer chickens: As an aid in the prevention of coccidiosis caused by E. mivati, E. brunetti, E. tenella, E. acervulina, E. maxima, and E. necatrix. For increased rate of weight gain. Feed continuously as sole ration. Do not feed to laying chickens. Withdraw 5 days prior to slaughter. 054771

Bacitracin (as bacitracin methylenedisalicylate) 27 to 50 For broiler and fryer chickens: As an aid in the prevention of coccidiosis caused by E. mivati, E. brunetti, E. tenella, E. acervulina, E. maxima, and E. necatrix. For improved feed efficiency. Feed continuously as sole ration. Do not feed to laying chickens. Withdraw 5 days prior to slaughter. 054771

Bacitracin (as bacitracin methylenedisalicylate) 50 For broiler and fryer chickens: As an aid in the prevention of necrotic enteritis caused or complicated by Clostridium spp. or other organisms susceptible to bacitracin. Feed continuously as sole ration. Do not feed to laying hens. Withdraw 5 days before slaughter. 054771

Bacitracin (as bacitracin methylenedisalicylate) 100 to 200 For broiler and fryer chickens: As an aid in the control of necrotic enteritis caused or complicated by Clostridium spp. or other organisms susceptible to bacitracin. To control a necrotic enteritis outbreak, start medication at first clinical signs of disease; administer continuously for 5 to 7 days or as long as clinical signs persist, then reduce bacitracin methylenedisalicylate to prevention level (50 g/ton). Do not feed to laying hens. Withdraw 5 days before slaughter. 054771

Bacitracin (as bacitracin zinc) 4 to 30 For broiler and fryer chickens: As an aid in the prevention of coccidiosis caused by E. mivati, E. brunetti, E. tenella, E. acervulina, E. maxima, and E. necatrix. For increased rate of weight gain. Feed continuously as sole ration. Do not feed to laying chickens. Withdraw 5 days prior to slaughter. 054771 054771

Bacitracin (as bacitracin zinc) 27 to 50 For broiler and fryer chickens: As an aid in the prevention of coccidiosis caused by E. mivati, E. brunetti, E. tenella, E. acervulina, E. maxima, and E. necatrix. For improved feed efficiency. Feed continuously as sole ration. Do not feed to laying chickens. Withdraw 5 days prior to slaughter. 054771 054771

(f) Robenidine may also be used in combination with:

(1) Chlortetracycline as in § 558.128.

(2) Lincomycin as in § 558.325.

(3) Oxytetracycline as in § 558.450.

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

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