# New Animal Drugs for Use in Animal Feeds; Monensin, Bacitracin Methylene Disalicylate, and Roxarsone
> **Food and Drug Administration** · Final rule. · Published 2001-03-05 · Effective 2001-03-05 · 66 FR 13236
## Document
- **Document number:** 01-5220
- **Category:** other
- **Sub-agency:** Food and Drug Administration
- **Federal Register citation:** 66 FR 13236
- **CFR reference:** 21 CFR 558
- **Publication date:** 2001-03-05
- **Effective date:** 2001-03-05
## Abstract

The Food and Drug Administration (FDA) is amending the animal drug regulations to reflect approval of a new animal drug application (NADA) filed by Alpharma, Inc. The NADA provides for use of approved, single-ingredient monensin and bacitracin methylene disalicylate Type A medicated articles to make two-way combination drug Type C medicated feeds for broiler and replacement chickens. These combination medicated feeds are used as an aid in the prevention of coccidiosis, as an aid in the prevention and control of necrotic enteritis, and for increased rate of weight gain and improved feed efficiency.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2001/03/05/01-5220/new-animal-drugs-for-use-in-animal-feeds-monensin-bacitracin-methylene-disalicylate-and-roxarsone)
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