Section 520.1660c - Oxytetracycline tablets(a)Specifications. Each tablet contains 250 or 500 milligrams (mg) oxytetracycline hydrochloride.(b)Sponsor. See No. 054771 in § 510.600(c) of this chapter.(c)Tolerances. See § 556.500 of this chapter.(d)Conditions of use in beef and dairy cattle -(1)Amounts. 10 mg per pound of body weight every 12 hours for treatment; 5 mg per pound of body weight every 12 hours for control.(2)Indications for use. For treatment and control of bacterial enteritis caused by Salmonella typhimurium and Escherichia coli (colibacillosis) and bacterial pneumonia (shipping fever complex, pasteurellosis) caused by Pasteurella multocida.(3)Limitations. Discontinue treatment 7 days prior to slaughter. Not for use in lactating dairy cattle. A withdrawal period has not been established for this product in preruminating calves. Do not use in calves to be processed for veal. Federal law restricts this drug to use by or on the order of a licensed veterinarian.46 FR 32440, June 23, 1981, as amended at 50 FR 1045, Jan. 9, 1985; 63 FR 70334, Dec. 21, 1998; 70 FR 16394 , Apr. 4, 2005; 78 FR 28825 , May 20, 2014; 88 FR 14897 , Mar. 10, 2023; 88 FR 55563 , Aug. 16, 2023 88 FR 14897 , 3/10/2023; 88 FR 55563 , 8/16/2023