Take the IVOMEC® Challenge This Spring, Reap Rewards Next Fall

Spring parasite control with IVOMEC (ivermectin) Brand Products pays — guaranteed

DULUTH, Ga. — Jan. 27, 2009 — Spring parasite control pays, and Merial is offering cattle producers the chance to prove it to themselves — risk free— with the IVOMEC Challenge.

“For cows and their spring-born calves, benefits of spring parasite control can include increased weaning weights,1-5 improved reproductive performance6 and reduced pasture parasite loads.7 Those benefits all add up to increased profits for cattle producers,” says Dr. Frank Hurtig, director, Merial Veterinary Services Team.

And, these profits go beyond just covering the cost of treatment. University researchers conclude that of all the pharmaceutical technologies examined, parasite control in cow herds has the greatest impact on breakeven prices — providing a value of $201 per head.1 And this effect was derived using only weaning rates and weaning weights.

“Through the IVOMEC Challenge, Merial gives producers a risk-free way to see for themselves the efficiency- and profit-boosting benefits of broad-spectrum parasite control with IVOMEC Brand Products in their herds,” Dr. Hurtig says. “Producers take home the profits, while Merial takes on the product risks if improvements aren’t achieved.”

To participate, cattle producers simply use any IVOMEC Brand Product on both their cows and spring-born calves in the spring then weigh the calves at weaning in the fall. If the increase in 205-day adjusted weaning weight versus the previous year does not cover the purchase price of the IVOMEC Brand Product used, Merial will provide to the producer an equivalent number of doses of any IVOMEC Brand Product.

“The IVOMEC Challenge is especially important this year as producers evaluate inputs in a tight economy. Merial is willing to help carry some of the production risks, thus helping ensure that producers will see a financial gain for their parasite control investment,” Dr. Hurtig says. “Another significant value is that cow herds stand to benefit far beyond just the initial treatments.”

In addition to increased weaning weights,2-5 treating cows at spring turnout has been shown to reduce pasture contamination,7 lower parasite infection levels in calves7 and help protect calf immune response.8

“Understandably, producers in cold climates may be under the impression that winter kills all parasites on pastures. However, parasites can — and do — survive, setting the stage for production drains into the summer,”7 Dr. Hurtig says. “The IVOMEC Challenge presents a great opportunity to test out the benefits of spring parasite control for both calves and cows — risk free.”

Only Merial offers the IVOMEC Challenge with all four proven formulations of IVOMEC Brand Products. All IVOMEC Brand Products also are backed by Merial’s 100% Product Satisfaction Guarantee. For more information, contact your local Merial sales representative or visit

Merial is a world-leading, innovation-driven animal health company, providing a comprehensive range of products to enhance the health, well-being and performance of a wide range of animals. Merial employs approximately 5,400 people and operates in more than 150 countries worldwide. Its 2008 sales were more than $2.6 billion. Merial Limited is a joint venture between Merck & Co., Inc and sanofi-aventis. For more information, please see


IVOMEC Plus (ivermectin/clorsulon): Do not treat cattle within 49 days of slaughter. Do not use in dairy cattle of breeding age or in veal calves. IVOMEC (ivermectin) Pour-On: Do not treat cattle within 48 days of slaughter. Do not use in dairy cattle of breeding age or in veal calves. IVOMEC 1% Injection for Cattle and Swine: Do not treat cattle within 35 days of slaughter. Do not use in dairy cattle of breeding age or in veal calves. Do not treat swine within 18 days of slaughter. IVOMEC EPRINEX® (eprinomectin) Pour-On for Beef and Dairy: No meat or milk withdrawal is required when used according to label. All IVOMEC Brand Products: Do not use in other animal species not on the label as severe adverse reactions, including fatalities in dogs, may result.

1Lawrence JD, Ibarburu MA. Economic analysis of pharmaceutical technologies in modern beef production. 2009 Iowa State University.

2Wohlgemuth K, et al. Relationship between weaning weights of North Dakota beef calves and treatment of their dams with ivermectin. Agri-Practice 1988:23-26.

3Wohlgemuth K, et al. Treatment of North Dakota beef cows and calves with ivermectin. Bovine Practitioner 1989:(24)61-66.

4Couvillion CE, et al. Final project report: Epidemiology and control of bovine gastrointestinal nematodes. 1987-1989.

5Ciordia H, et al. Effect of ivermectin on performance on beef cattle on Georgia pastures. Am J Vet Res 1984;45:2455-2457.

6Stromberg BE, Corwin RM. Epizootiology of Ostertagia ostertagi in cow-calf production systems in the American Midwest. Veterinary Parasitology 1993;46:297-302.

7Hildreth M. Economics and control of cattle-worms in beef cattle: a northern perspective. Academy of Veterinary Consultants Meeting. December 2008.

8Wiggin C, et al. Studies of the immunomodulatory effects of low-level infection with Ostertagia ostertagi in calves. American Journal of Veterinary Research 1989;50(10):1764-1770.

®IVOMEC and EPRINEX are registered trademarks of Merial.

©2009 Merial Limited. Duluth, GA. All rights reserved. RUMIEGN921 (01/09)


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