# New Animal Drugs for Use in Animal Feeds; Chlortetracycline
> **Food and Drug Administration** · Final rule; technical amendment. · Published 2009-06-12 · Effective 2009-06-12 · 74 FR 27919
## Document
- **Document number:** E9-13849
- **Category:** other
- **Sub-agency:** Food and Drug Administration
- **Federal Register citation:** 74 FR 27919
- **CFR reference:** 21 CFR 558
- **Publication date:** 2009-06-12
- **Effective date:** 2009-06-12
- **HHS docket:** Docket No. FDA-2009-N-0665
## 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 Alpharma Inc. The supplemental NADA provides for revised Blue Bird labeling for chlortetracycline Type A medicated articles used to formulate Type B and Type C medicated feeds in various classes of livestock and poultry.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2009/06/12/E9-13849/new-animal-drugs-for-use-in-animal-feeds-chlortetracycline)
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