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Code of Federal Regulations Title 21. Food and Drugs § 21.556.113 Ceftiofur

Current as of January 02, 2025 | Updated by Findlaw Staff

(a) Acceptable daily intake and acute reference dose—

(1) Acceptable daily intake (ADI). The ADI for total residue of ceftiofur is 30 μg/kg of body weight per day.

(2) Acute reference dose (ARfD). The ARfD for total residue of ceftiofur is 0.830 mg/kg of body weight.

(b) Tolerances. The tolerances for desfuroylceftiofur (marker residue) are:

(1) Cattle.

(i) Kidney (target tissue):  0.4 ppm.

(ii) Liver:  2 ppm.

(iii) Muscle:  1 ppm.

(iv) Milk:  0.1 ppm.

(2) Chickens and turkeys. Edible tissues (excluding eggs):  Not required.

(3) Goats.

(i) Kidney (target tissue):  8 ppm.

(ii) Liver:  2 ppm.

(iii) Muscle:  1 ppm.

(iv) Milk:  0.1 ppm.

(4) Sheep. Edible tissues (excluding milk):  Not required.

(5) Swine.

(i) Kidney (target tissue):  0.25 ppm.

(ii) Liver:  3 ppm.

(iii) Muscle:  2 ppm.

(c) Related conditions of use. See §§ 522.313a, 522.313b, 522.313c, and 526.313 of this chapter.

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Cite this article: FindLaw.com - Code of Federal Regulations Title 21. Food and Drugs § 21.556.113 Ceftiofur - last updated January 02, 2025 | https://codes.findlaw.com/cfr/title-21-food-and-drugs/cfr-sect-21-556-113/

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