§ 558.325 Lincomycin.

(a) Specifications. Type A medicated articles containing 20 or 50 grams of lincomycin (as lincomycin hydrochloride agricultural grade) per pound. (b) Sponsor. See No. 066104 in § 510.600(c) of this chapter. (c) Related tolerances. See § 556.360 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 lincomycin medicated feeds must not exceed 6 months from the date of issuance. VFDs for lincomycin shall not be refilled. (3) Labeling of Type A medicated articles and Type B and Type C medicated feeds containing lincomycin shall bear the following: (i) “Do not allow rabbits, hamsters, guinea pigs, horses, or ruminants access to feeds containing lincomycin. Ingestion by these species may result in severe gastrointestinal effects.” (ii) [Reserved] (4) Labeling of medicated feeds containing lincomycin intended for use in swine shall bear the following: (i) “Occasionally, swine fed lincomycin may within the first 2 days after the onset of treatment develop diarrhea and/or swelling of the anus. On rare occasions, some pigs may show reddening of the skin and irritable behavior. These conditions have been self-correcting within 5 to 8 days without discontinuing the lincomycin treatment.” (ii) “The effects of lincomycin on swine reproductive performance, pregnancy, and lactation have not been determined.” (e) Conditions of use—(1) Chickens— (2) Swine—