#### § 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](/on/2024-09-23/title-21/section-510.600#p-510.600(c)).

(c) *Related tolerances.* See [§ 556.580 of this chapter](/on/2024-09-23/title-21/section-556.580).

(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](/on/2024-09-23/title-21/section-558.128).

(2) Lincomycin as in [§ 558.325](/on/2024-09-23/title-21/section-558.325).

(3) Oxytetracycline as in [§ 558.450](/on/2024-09-23/title-21/section-558.450).

[[40 FR 13959](https://www.federalregister.gov/citation/40-FR-13959), Mar. 27, 1975]

###### Editorial Note

#### Editorial Note:

For Federal Register citations affecting [§ 558.515](/on/2024-09-23/title-21/section-558.515), see the List of CFR Sections Affected, which appears in the Finding Aids section of the printed volume and at *[www.govinfo.gov](http://www.govinfo.gov).*