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 Code of Federal Regulations (Last Updated: November 8, 2024)
 Title 21 - Food and Drugs
 Chapter I - Food and Drug Administration, Department of Health and Human Services
 SubChapter E - Animal Drugs, Feeds, and Related Products
 Part 558 - New Animal Drugs for Use in Animal Feeds
 Subpart B - Specific New Animal Drugs for Use in Animal Feeds

  § 558.115 - Carbadox.  

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  • § 558.115 Carbadox.

    (a) Approvals. Type A medicated articles: 2.2. percent (10 grams per pound) to 066104 in § 510.600(c) of this chapter.

    (b) Related tolerances. See § 556.100 of this chapter.

    (c) Special considerations. Do not use in Type B or Type C medicated feeds containing bentonite.

    (d) Conditions of use. It is used for swine as follows:

    (1) Amount per ton. 10-25 10–25 grams (0.0011-00011–0.00275 percent).

    (i) Indications for use. For increase in rate of weight gain and improvement of feed efficiency.

    (ii) Limitations. Not for use in pregnant swine or swine intended for breeding purposes. Do not feed to swine within 42 days of slaughter.

    (2) Amount per ton. 50 grams (0.0055 percent).

    (i) Indications for use. For control of swine dysentery (vibrionic dysentery, bloody scours, or hemorrhagic dysentery); control of bacterial swine enteritis (salmonellosis or necrotic enteritis caused by Salmonella choleraesuis); increased rate of weight gain and improved feed efficiency.

    (ii) Limitations. Not for use in pregnant swine or swine intended for breeding purposes. Do not feed to swine within 42 days of slaughter.

    (3) Amount per ton. Carbadox 50 grams (0.0055 percent) plus pyrantel tartrate, 96 grams (0.0106 percent).

    (i) Indications for use. For control of swine dysentery (vibrionic dysentery, bloody scours, or hemorrhagic dysentery); control of bacterial swine enteritis (salmonellosis or necrotic enteritis caused by Salmonella choleraesuis); aid in the prevention of migration and establishment of large roundworm (Ascaris suum) infections; aid in the prevention of establishment of nodular worm (Oesophagostomum) infections.

    (ii) Limitations. Do not feed to swine over 75 pounds; do not feed within 10 weeks of slaughter; consult a veterinarian before feeding to severely debilitated animals; feed continuously as sole ration. Do not use in complete feeds containing less than 15 percent crude protein.

    (4) Amount. Carbadox, 10 to 25 grams per ton of feed; plus oxytetracycline, 10 milligrams per pound of body weight.

    (i) Indications for use. For treatment of bacterial enteritis caused by Escherichia coli and S. choleraesuis susceptible to oxytetracycline, for treatment of bacterial pneumonia caused by Pasteurella multocida susceptible to oxytetracycline; and for increased rate of weight gain and improved feed efficiency.

    (ii) Limitations. Feed continuously for 7 to 14 days. Not for use in pregnant swine or swine intended for breeding purposes. Do not feed to swine within 42 days of slaughter

    Carbadox may also be used in combination with oxytetracycline as in § 558.450.

    [40 FR 13959, Mar. 27, 1975, as amended at 40 FR 45164, Oct. 1, 1975; 40 FR 57798, Dec. 12, 1975; 42 FR 761, Jan. 4, 1977; 51 FR 7396, Mar. 3, 1986; 63 FR 59216, Nov. 3, 1998; 66 FR 47963, Sept. 17, 2001; 69 FR 51173, Aug. 18, 2004; 82 FR 21691, May 10, 2017]