Rumensin — improves gain, all while preventing
and controlling coccidiosis in grazing cattle

For only pennies per head per day, you can sell
heavier stocker and background cattle

Rumensin is a proven management tool that optimizes your investment by improving cattle weight gain, even as quality of forage changes from year to year.1 For pennies per head per day, Rumensin delivers 20 lbs or more per head of additional selling weight during a 100-day grazing period.1

Only ionophore approved for mature beef cows

Rumensin improves feed efficiency in beef cows, reducing their feed requirements 5 percent to 10 percent while maintaining body weight with no negative impacts on reproductive performance.2 Rumensin also improves average daily gain in replacement heifers, resulting in fewer days to first estrus—which can result in improved lifetime productivity.3

Rumensin for coccidiosis in cattle

For the prevention and control of coccidiosis, Rumensin is the most potent feed ingredient available that kills coccidia parasites at three different stages of development4,5 instead of merely slowing their development. In addition, it’s a more efficacious coccidiostat at lower doses compared to other ionophores.3

Important safety information

Consumption by unapproved species or feeding undiluted may be toxic or fatal. Do not feed to veal calves. The label contains complete use information, including cautions and warnings. Always read, understand and follow the label and use directions.

Dosage/Use Levels

Rumensin: Growing cattle on pasture or in drylot (stockers, feeders, and dairy and beef replacement heifers)

For increased rate of weight gain: Feed 50 to 200 mg/hd/d of monensin in at least 1.0 lb of Type C medicated feed. Or, after the 5th day, feed 400 mg/hd/d every other day in at least 2.0 lbs of Type C medicated feed. The Type C medicated feed must contain 15 to 400 g/ton of monensin (90% DM basis).

For the prevention and control of coccidiosis:Feed at a rate to provide 0.14 to 0.42 mg/lb of body weight/d of monensin up to a maximum of 200 mg/hd/d. The Type C medicated feed must contain 15 to 400 g/ton of monensin (90% DM basis).

Free-choice supplements:Approved supplements must provide not less than 50 nor more than 200 mg/hd/d of monensin.

Rumensin: Mature reproducing beef cows

For improved feed efficiency when receiving supplemental feed: Feed continuously at a rate of 50 to 200 mg/hd/d of monensin. Cows on pasture or in drylot must receive a minimum of 1.0 lb of Type C medicated feed/hd/d. Do not self-feed.

For the prevention and control of coccidiosis: Feed at a rate of 0.14 to 0.42 mg/lb of body weight/d of monensin up to a maximum of 200 mg/hd/d.

 

1. Rathmacher, R. 1977. 24 trials. Elanco Animal Health. Data on file.

2. Rumensin Freedom of Information Summary (NADA95–735).

3. Elanco Study Nos. T1F207848, T1F307853, T1F367767, T1F427824 & T1F4876A3. Data on file.

4. McDougald, L. 1980. “Chemotherapy of coccidiosis.” The Biology of the Coccidia, P. Long (ed.): 373–427.

5. Long, P, and Jeffers, T. 1982. “Studies on the stage of action of ionophorous antibiotics against Eimeria.” J. Parasitology 68(3): 363–371.

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