21 C.F.R. § 558.140 Chlortetracycline and sulfamethazine.
Title 21 - Food and Drugs
(a) Approvals. Type A medicated articles: 35 grams of chlortetracycline per pound with 7.7 percent (35 grams) of sulfamethazine to Nos. 046573 and 048164 in §510.600(c) of this chapter. (b) Related tolerances. See §§556.150 and 556.670 of this chapter. (c) It is used in feed for beef cattle as follows: (1) Amount per head per day. Chlortetracycline, 350 milligrams plus sulfamethazine, 350 milligrams. (2) Indications for use. Aid in the maintenance of weight gains in the presence of respiratory disease such as shipping fever. (3) Limitations. Feed for 28 days; withdraw 7 days prior to slaughter. [61 FR 35954, July 9, 1996, as amended at 64 FR 15684, Apr. 1, 1999; 66 FR 46706, Sept. 7, 2001; 68 FR 22294, Apr. 28, 2003; 69 FR 62407, Oct. 26, 2004]
Title 21: Food and Drugs
PART 558—NEW ANIMAL DRUGS FOR USE IN ANIMAL FEEDS
Subpart B—Specific New Animal Drugs for Use in Animal Feeds
§ 558.140 Chlortetracycline and sulfamethazine.
