# New Animal Drugs for Use In Animal Feeds; Melengestrol Acetate and Lasalocid; Technical Amendment
> **Food and Drug Administration** · Final rule; technical amendment. · Published 1998-12-01 · Effective 1998-12-01 · 63 FR 66018
## Document
- **Document number:** 98-31573
- **Category:** other
- **Sub-agency:** Food and Drug Administration
- **Federal Register citation:** 63 FR 66018
- **CFR reference:** 21 CFR 558
- **Publication date:** 1998-12-01
- **Effective date:** 1998-12-01
## Abstract

The Food and Drug Administration (FDA) is amending and clarifying the animal drug regulations concerning melengestrol acetate (MGA) and the special considerations related to making type B and C feeds and lasalocid type B liquid feed specifications used for making lasalocid/MGA type C heifer feed.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1998/12/01/98-31573/new-animal-drugs-for-use-in-animal-feeds-melengestrol-acetate-and-lasalocid-technical-amendment)
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