Section 520.1450a - Morantel tartrate bolus(a)Specifications. Each bolus contains 2.2 grams morantel tartrate equivalent to 1.3 grams of morantel base.(b)Sponsor. See No. 054771 in § 510.600(c) of this chapter.(c)Related tolerances. See § 556.425 of this chapter.(d)Conditions of use - (1)Amount. One bolus per 500 pounds of body weight (4.4 milligrams per pound of body weight) as a single oral dose. Boluses may be divided in half for more accurate dosing as follows: up to 325 pounds, 1/2 bolus; 326 to 600 pounds, 1 bolus; 601 to 900 pounds, 11/2 boluses; and 901 to 1,200 pounds, 2 boluses.(2)Indications for use. 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).(3)Limitations. Conditions of constant worm exposure may require retreatment in 2 to 4 weeks. Consult your veterinarian before administering to severely debilitated animals and for assistance in the diagnosis, treatment, and control of parasitism. Do not treat within 14 days of slaughter.46 FR 50949, Oct. 16, 1981. Redesignated at 49 FR 47831, Dec. 7, 1984, and amended at 51 FR 9005, Mar. 17, 1986; 78 FR 28825 , May 20, 2014