New Animal Drugs for Use in Animal Feeds; Chlortetracycline, Procaine Penicillin, and Sulfamethazine

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The Food and Drug Administration (FDA) is amending the animal drug regulations to reflect the approved status of a new animal drug application (NADA) held by Pennfield Oil Co. The NADA provides for the use of three-way, fixed combination Type A medicated articles containing chlortetracycline, procaine penicillin, and sulfamethazine to make three-way combination drug Type C medicated swine feeds used for growth promotion, increased feed efficiency, and the management of several bacterial diseases. Elsewhere in this issue of the Federal Register, FDA is publishing a proposed rule to remove certain obsolete or redundant sections of the new animal drug regulations. That proposed rule contains background information about those regulations and also for this action.