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Title 21

Displaying title 21, up to date as of 6/04/2026. Title 21 was last amended 6/03/2026.
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§ 558.360 Morantel.

(a) Specifications. Each pound of Type A medicated article contains 88 grams morantel tartrate.

(b) Sponsor. See No. 066104 in § 510.600(c) of this chapter.

(c) Related tolerances. See § 556.425 of this chapter.

(d) Special considerations.

(1) Do not use in Type B or Type C medicated feeds containing bentonite.

(2) Consult your veterinarian before using in severely debilitated animals and for assistance in the diagnosis, treatment, and control of parasitism.

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

Morantel tartrate in grams/ton Indications for use Limitations Sponsor
(1) 0.44 to 4.4 grams of morantel tartrate per pound of feed Cattle: For removal and control of mature gastrointestinal nematode infections of cattle including stomach worms (Haemonchus spp., Ostertagia spp., Trichostrongylus spp.), worms of the small intestine (Cooperia spp., Trichostrongylus spp., Nematodirus spp.), and worms of the large intestine (Oesophagostomum radiatum) Feed as a single therapeutic treatment at 0.44 gram of morantel tartrate per 100 pounds of body weight. Fresh water should be available at all times. When medicated feed is consumed, resume normal feeding. Conditions of constant worm exposure may require retreatment in 2 to 4 weeks. Do not treat cattle within 14 days of slaughter 066104
(2) 0.44 to 4.4 grams of morantel tartrate per pound of feed Goats: For removal and control of mature gastrointestinal nematode infections of goats including Haemonchus contortus, Ostertagia (Teladorsagia) circumcincta, and Trichostrongylus axei Feed as a single therapeutic treatment at 0.44 gram of morantel tartrate per 100 pounds of body weight. Fresh water should be available at all times. When medicated feed is consumed, resume normal feeding. Conditions of constant worm exposure may require retreatment in 2 to 4 weeks. Do not treat goats within 30 days of slaughter 066104

[84 FR 39185, Aug. 9, 2019]