Tuesday, March 03, 2009

AAEP 2008: Deworming--To Rotate or Not to Rotate?

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by: Christy West, TheHorse.com Webmaster
March 01 2009, Article # 13695

Rotational deworming--dosing horses with different classes of dewormers in rotation--is often recommended for controlling equine internal parasites. The theory is that by using all of the available effective deworming drug classes, we combine their benefits into a maximally effective program. However, some researchers say rotation isn't a good idea because it contributes to parasite resistance and will reduce the effectiveness of available deworming drugs.

At the 2008 American Association of Equine Practitioners convention, held Dec. 6-10 in San Diego, Calif., two different viewpoints on rotational deworming were presented. We've included both here so you can see the evidence for both sides and make your own choices.


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