Pet Medications

Ivy Laboratories, Division of Ivy Animal Health, Inc.

8857 Bond Street

Overland Park, KS    66214
USA

Melengestrol Acetate

Monensin Sodium

Cattle, beef, heifers fed in confinement for slaughter

Per Os

Medicated feed

Type A Medicated Article

OTC

558.342 Melengestrol.

Specifications: Liquid Type A article containing 500 milligrams melengestrol acetate per pound.

Conditions of use:

Cattle (heifers fed in confinement for slaughter):

Amount: Melengestrol acetate 0.25 to 0.40 milligram per head per day, plus monensin (as monensin sodium), 50 to 360 milligrams per head per day.

Indications: For increased rate of weight gain, improved feed efficiency, and suppression of estrus (heat) and for the prevention and control of coccidiosis due to Eimeria bovis and E. zuernii.

Limitations: Heifers being fed in confinement for slaughter. Add at the rate of 0.5 to 2.0 pounds per head per day a medicated feed (liquid or dry) containing 0.125 to 0.80 milligram of melengestrol acetate per pound to a feed containing 5 to 30 grams of monensin per ton; or, add at the rate of 0.5 to 2.0 pounds per head per day a medicated feed (liquid or dry) containing 0.125 to 0.80 milligram of melengestrol acetate plus 25 to 720 milligrams of monensin per pound to a non-medicated feed to provide 0.25 to 0.40 milligram of melengestrol acetate and 50 to 360 milligrams of monensin per head per day or to provide 0.14 to 0.42 mg monensin/lb body weight, up to 360 mg monensin/head/day.

A tolerance of 0.10 part per million (ppm) in cattle liver, 0.05 ppm in muscle, kidney, and fate.

A tolerance of 0.05 ppm in goats edible tissue.

A tolerance for residue of monensin in chickens, turkeys and quail is not needed.

A tolerance for residues of monensin in milk is not needed.

A tolerance of 25 parts per billion is established for residues of the parent compound, melengestrol acetate, in fat, of cattle.