# New Animal Drugs for Use in Animal Feeds; Chlortetracycline
> **Food and Drug Administration** · Final rule, technical amendment. · Published 2004-12-30 · Effective 2004-12-30 · 69 FR 78305
## Document
- **Document number:** 04-28578
- **Category:** other
- **Sub-agency:** Food and Drug Administration
- **Federal Register citation:** 69 FR 78305
- **CFR reference:** 21 CFR 558
- **Publication date:** 2004-12-30
- **Effective date:** 2004-12-30
## Abstract

The Food and Drug Administration (FDA) is amending the animal drug regulations to add the approved withdrawal time to the limitations to conditions of use for chlortetracycline Type C medicated feeds for chickens when fed at the 500 gram per ton level. This change is being made to improve the accuracy of the regulations.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2004/12/30/04-28578/new-animal-drugs-for-use-in-animal-feeds-chlortetracycline)
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