# New Animal Drugs for Use in Animal Feeds; Bambermycins
> **Food and Drug Administration** · Final rule. · Published 2003-05-21 · Effective 2003-05-21 · 68 FR 27727
## Document
- **Document number:** 03-12721
- **Category:** other
- **Sub-agency:** Food and Drug Administration
- **Federal Register citation:** 68 FR 27727
- **CFR reference:** 21 CFR 558
- **Publication date:** 2003-05-21
- **Effective date:** 2003-05-21
## 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 Intervet, Inc. The supplemental NADA provides for use of bambermycins Type A medicated articles to make Type B and Type C medicated feeds used to increase rate of weight gain in pasture cattle (slaughter, stocker, feeder cattle, and dairy and beef replacement heifers) when consumed free-choice or hand-fed at a rate of not less than 10 milligrams (mg) nor more than 40 mg bambermycins per head per day.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2003/05/21/03-12721/new-animal-drugs-for-use-in-animal-feeds-bambermycins)
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