Section 558.582 - Sulfamerazine(a)Specifications. Type A medicated articles containing 99 percent sulfamerazine.(b)Sponsor. See No. 054771 in § 510.600(c) of this chapter.(c)Related tolerances. See § 556.660 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 sulfamerazine medicated feeds must not exceed 6 months from the date of issuance. VFDs for sulfamerazine shall not be refilled.(e)Conditions of use. It is used in fish feed for as follows: Sulfamerazine
grams/ton | Combination in
grams/ton | Indications for use | Limitations | Sponsor |
| (1) To deliver 10 grams of sulfamerazine per 100 pounds of fish per day | | Rainbow trout, brook trout, and brown trout: For control of furunculosis | Formulate to deliver 10 grams of sulfamerazine per 100 pounds of fish per day. Treat for not more than 14 days. Do not treat within 3 weeks of marketing or stocking in stream open to fishing | 054771 |
| (2) [Reserved] | | | | |
81 FR 95013 , Dec. 27, 2016