New Animal Drugs For Use In Animal Feeds; Melengestrol Acetate and Oxytetracycline

摘要

The Food and Drug Administration (FDA) is amending the animal drug regulations to reflect approval of two original new animal drug applications (NADA's) filed by Pharmacia & Upjohn Co. The NADA's provide for the use of separately approved Type A medicated articles containing melengestrol acetate (dry and liquid form) and oxytetracycline (dry form) to make dry combination drug Type C medicated feeds. The Type C medicated feeds are for heifers fed in confinement for slaughter for increased rate of weight gain, improved feed efficiency, suppression of estrus, and reduced incidence of liver abscesses.