# New Animal Drugs for Use in Animal Feeds; Narasin and Bacitracin Zinc
> **Food and Drug Administration** · Final rule. · Published 2000-09-15 · Effective 2000-09-15 · 65 FR 55893
## Document
- **Document number:** 00-23799
- **Category:** other
- **Sub-agency:** Food and Drug Administration
- **Federal Register citation:** 65 FR 55893
- **CFR reference:** 21 CFR 558
- **Publication date:** 2000-09-15
- **Effective date:** 2000-09-15
## 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 Roche Vitamins, Inc. The NADA provides for use of approved narasin and bacitracin zinc Type A medicated articles to make two-way combination Type C medicated feeds used for prevention of coccidiosis, increased rate of weight gain, and improved feed efficiency in broiler chickens.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2000/09/15/00-23799/new-animal-drugs-for-use-in-animal-feeds-narasin-and-bacitracin-zinc)
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