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Code of Federal Regulations Title 21. Food and Drugs § 21.558.274 Hygromycin B

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

(a) Specifications. Type A medicated articles containing 2.4 or 8 grams hygromycin B per pound (g/lb).

(b) Sponsor. See No. 058198 in § 510.600(c) of this chapter for as follows:

(c) Related tolerances. See § 556.330 of this chapter.

(d) Special considerations—

(1) Federal law restricts medicated feed containing this veterinary feed directive (VFD) drug to use by or on the order of a licensed veterinarian. See § 558.6 for additional requirements.

(2) The expiration date of VFDs for hygromycin B medicated feeds must not exceed 6 months from the date of issuance. VFDs for hygromycin B shall not be refilled.

(e) Conditions of use. It is used in feed as follows:

(1) Chickens—

Hygromycin B grams/ton

Combination in grams/ton

Indications for use

Limitations

Sponsor

(i) 8 to 12

Chickens: For control of infections of large roundworms (Ascaris galli), cecal worms (Heterakis gallinae), and capillary worms (Capillaria obsignata)

Use in complete feed. Withdraw 3 days before slaughter

058198

(ii) [Reserved]

(2) Swine—

Hygromycin B grams/ton

Combination in grams/ton

Indications for use

Limitations

Sponsor

(i) 12

Swine: For control of infections of large roundworms (A. suis), nodular worms (O. dentatum), and whipworms (Trichuris suis)

In market hogs, use in complete feed for 8 weeks during the growing period. Withdraw 15 days before slaughter

058198

(ii) [Reserved]
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Cite this article: FindLaw.com - Code of Federal Regulations Title 21. Food and Drugs § 21.558.274 Hygromycin B - last updated January 02, 2025 | https://codes.findlaw.com/cfr/title-21-food-and-drugs/cfr-sect-21-558-274/

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