Title 21
SECTION 558.274
558.274 Hygromycin B.
§ 558.274 Hygromycin B.(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] |