How often should I worm my horse and which product should I rotate with?
Author: Aussie Vet Products Date Posted:3 September 2014
Geoff Writes:
How often should I worm my horse and which product should I rotate with?
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Hi Geoff,
You should be worming your adult horse every 2 – 3 months depending on the product you are currently using. If worming a foal I would recommend worming at 2 monthly intervals until at least 6 months of age.
With regards to rotating your wormer, usually we recommend using one specific active ingredient for one year and switching to another active ingredient the next.
The reason for rotating your wormer is to prevent your horse building up a resistance to a particular active ingredient and the product not being effective.
Most horse wormers on the market are classified into 2 categories: ‘mectin’ based active ingredients or the Benzimidazole group of active ingredients that usually end in ‘azole’.
So for example if you were using a product such as Equimax that contains Abamectin and praziquantel you would rotate with Stratgey T wormer which contains active ingredients Oxfensazole and pyrantel Embonate.
Hope this helps.
Kind regards,
Dr Simon.
