(a) Approvals. Type A medicated articles: 99 percent to 054771 in Sec. 510.600(c) of this chapter.
(b) Related tolerances. See Sec. 556.660 of this chapter.
(c) Conditions of use. It is used in fish feed for rainbow trout, brook trout, and brown trout as follows:
(1) Amount. 10 grams of sulfamerazine per 100 pounds of fish per day.
(2) Indications for use. Control of furunculosis.
(3) Limitations. Treat for not more than 14 days; do not treat within 3 weeks of marketing or stocking in stream open to fishing. [41 FR 11005, Mar. 15, 1976, as amended at 51 FR 7400, Mar. 3, 1986; 61 FR 18082, Apr. 24, 1996; 63 FR 27846, May 21, 1998; 66 FR 46707, Sept. 7, 2001; 79 FR 13546, Mar. 11, 2014]