There is a wealth of information to be found about worming your horse. Every horse will have a different requirement due to their different susceptibilities, exposure and pasture management.
Previously, “interval worming” was recommended, whereby all horses on a yard would be dosed at given intervals regardless of their individual requirements. Unfortunately we now know that there is significant resistance of equine parasites to the wormers we often use, so we now recommend a more tailored approach. This is based on faecal egg count testing from dung samples to quantify the worm burden in a particular horse to determine whether worming is necessary. We also recommend blood testing for tapeworm as worm egg counts can not be relied upon to detect tapeworm infection. If a blood test is not desired we would recommend twice yearly worming against tapeworm in the spring and autumn using a wormer containing praziquantel or pyrantel (double dose needed). This method, called “targeted strategic worming” means that non-resistant worms will still be circulating amongst the horse population on a yard, but at a level low enough that problems should not be caused by them.
All methods of parasite control should be combined with strict pasture management.
For more information please see our worming information sheet, available under Downloads. We are always happy to discuss worming with our clients and can provide a bespoke worming programme as needed.