# New Animal Drugs for Use in Animal Feeds; Lasalocid
> **Food and Drug Administration** · Final rule; technical amendment. · Published 2006-09-26 · Effective 2006-09-26 · 71 FR 56007
## Document
- **Document number:** 06-8261
- **Category:** other
- **Sub-agency:** Food and Drug Administration
- **Federal Register citation:** 71 FR 56007
- **CFR reference:** 21 CFR 558
- **Publication date:** 2006-09-26
- **Effective date:** 2006-09-26
## 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 Purina Mills, Inc. The supplemental NADA provides for the use of a lasalocid Type A medicated article containing 20 percent lasalocid activity per pound to make free-choice Type C medicated feed mineral blocks used for increased rate of weight gain in pasture cattle (slaughter, stocker, feeder cattle, and dairy and beef replacement heifers).

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2006/09/26/06-8261/new-animal-drugs-for-use-in-animal-feeds-lasalocid)
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