# New Animal Drugs for Use in Animal Feeds; Laidlomycin Propionate Potassium
> **Food and Drug Administration** · Final rule. · Published 1997-03-05 · Effective 1977-03-05 · 62 FR 9929
## Document
- **Document number:** 97-5312
- **Category:** other
- **Sub-agency:** Food and Drug Administration
- **Federal Register citation:** 62 FR 9929
- **CFR reference:** 21 CFR 558
- **Publication date:** 1997-03-05
- **Effective date:** 1977-03-05
## 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 Hoffmann-LaRoche, Inc. The supplemental NADA provides for use of dry laidlomycin propionate potassium Type A articles for making liquid Type B medicated feeds used to make dry Type C medicated feeds. The Type C feeds are for cattle fed in confinement for slaughter for increased rate of weight gain and improved feed efficiency.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1997/03/05/97-5312/new-animal-drugs-for-use-in-animal-feeds-laidlomycin-propionate-potassium)
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