CFR 21-558.145-2014 Food and drugs. Part558:New animal drugs for use in animal feeds. Section558.145:Chlortetracycline, procaine penicillin, and sulfamethazine.
(a) Approvals. Type A medicated articles: (1) 20 grams of chlortetracycline per pound, 4.4 percent (20 grams) of sulfamethazine, and procaine penicillin equivalent in activity to 10 grams of penicillin per pound to 054771 in § 510.600(c) of this chapter.
CFR 21-558.145-2014 history
2014CFR 21-558.145-2014 Food and drugs. Part558:New animal drugs for use in animal feeds. Section558.145:Chlortetracycline, procaine penicillin, and sulfamethazine.