New Animal Drugs for Use in Animal Feeds; Salinomycin and Bacitracin Methylene Disalicylate

The Food and Drug Administration (FDA) is amending the animal drug regulations to reflect approval of a new animal drug application (NADA) filed by Alpharma, Inc. The NADA provides for use of approved, single-ingredient salinomycin and bacitracin methylene disalicylate Type A medicated articles to make two-way combination drug Type C medicated feeds for broiler, roaster, and replacement (breeder and layer) chickens. The Type C medicated feeds are used for prevention of coccidiosis and as an aid in the prevention and control of necrotic enteritis in broiler, roaster, and replacement (breeder and layer) chickens; and for prevention of coccidiosis, increased rate of weight gain, and improved feed efficiency in roaster and replacement (breeder and layer) chickens. Previously established acceptable daily intakes (ADI's) for total residues of bacitracin and salinomycin are also being codified.