# New Animal Drugs for Use in Animal Feeds; Medicated Feed Applications; Semduramicin
> **Food and Drug Administration** · Final rule. · Published 1997-05-09 · Effective 1997-05-09 · 62 FR 25477
## Document
- **Document number:** 97-12257
- **Category:** other
- **Sub-agency:** Food and Drug Administration
- **Federal Register citation:** 62 FR 25477
- **CFR reference:** 21 CFR 558
- **Publication date:** 1997-05-09
- **Effective date:** 1997-05-09
## Abstract

The Food and Drug Administration (FDA) is amending the animal drug regulations to reflect approval of a supplemental new animal drug application (NADA) filed by Pfizer, Inc. The supplemental NADA provides for revised assay limits for Type C medicated semduramicin chicken feed to 80 to 110 percent of labeled claim.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1997/05/09/97-12257/new-animal-drugs-for-use-in-animal-feeds-medicated-feed-applications-semduramicin)
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