(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 grams (0.0011-0.00275 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) 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]