§ 520.90c. Ampicillin boluses.
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/us/cfr/t21/s§ 520.90c·A research copy — for the controlling text, always check the official state or federal source. Not legal advice.
(a)Specifications. Each bolus contains ampicillin trihydrate equivalent to 400 milligrams of ampicillin.
(b)Sponsor. See No. 054771 in § 510.600(c) of this chapter.
(c)Related tolerances. See § 556.40 of this chapter.
(d)Conditions of use in nonruminating calves—(1) Amount. 5 milligrams per pound of body weight twice daily not to exceed 4 days.
(2)Indications for use. Oral treatment of bacterial enteritis (colibacillosis) caused by E. coli.
(3)Limitations. Treated calves must not be slaughtered for food during treatment and for 7 days after the last treatment. Federal law restricts this drug to use by or on the order of a licensed veterinarian. [57 FR 37322, Aug. 18, 1992, as amended at 58 FR 61016, Nov. 19, 1993; 60 FR 55659, Nov. 2, 1995; 79 FR 28818, May 20, 2014. Redesignated and amended at 85 FR 18118, Apr. 1, 2020]