§ 558.274. Hygromycin B.
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/us/cfr/t21/s§ 558.274·A research copy — for the controlling text, always check the official state or federal source. Not legal advice.
(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 12Chickens: 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 slaughter058198
(ii)[Reserved]
(2)Swine— Hygromycin B grams/ton Combination in grams/ton Indications for use Limitations Sponsor
(i)12Swine: 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 slaughter058198
(ii)[Reserved] [81 FR 95005, Dec. 27, 2016]
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§ 558.274
Hygromycin B.
Fed. Reg.×1
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