§ 558.635 — Virginiamycin

(a) Specifications. Type A medicated articles containing 10, 20, 50, or 227 grams virginiamycin per pound.

(b) Sponsors. See No. 066104 in § 510.600(c) of this chapter.

(c) Related tolerances. See § 556.750 of this chapter.

(d) Special considerations. (1) Federal law restricts medicated feed containing this veterinary feed directive (VFD) drug to use by or on the order of a licensed veterinarian. See § 558.6 for additional requirements.

(2) The expiration date of VFDs for virginiamycin medicated feeds must not exceed 6 months from the date of issuance. VFDs for virginiamycin shall not be refilled.

(3) Not for use in breeding swine over 120 pounds.

(4) Dilute Type A article with at least 10 pounds of a feed ingredient prior to final mixing in 1 ton of Type C feed.

(e) Conditions of use—(1) Chickens—

(2) Swine—

(3) Cattle—