21 C.F.R. § 558.235 – Efrotomycin.

(a) Specifications. Type A medicated articles containing 14.5 grams efrotomycin per pound.
(b) Sponsor. See No. 000010 in § 510.600(c) of this chapter.
(c) Related tolerances. See § 556.224 of this chapter.

(d) Conditions of use in swine—

Efrotomycinin grams/ton	Indications for use	Limitations	Sponsor
(1) 3.6	Swine: For improved feed efficiency	Feed continuously as sole ration. Not to be used in swine weighing more than 250 pounds	000010
(2) 3.6 to 14.5	Swine: For increased rate of weight gain	Feed continuously as sole ration. Not to be used in swine weighing more than 250 pounds	000010

[57 FR 38442, Aug. 25, 1992, as amended at 62 FR 63271, Nov. 28, 1997; 84 FR 33001, July 11, 2019; 84 FR 39185, Aug. 9, 2019; 85 FR 45309, July 28, 2020]