How to Worm Your Horse: Methods and Advice


How to Worm Your Horse

  1. Stand to one side of your horse just in front of his shoulder and open his mouth slightly.
  2. Gently insert the syringe into the mouth, but do not depress it at this point. It is important to deliver the medication to the back of the tongue, not just in the mouth.
  3. Move the syringe to the back of the tongue, opening his mouth more fully if necessary. Finally, depress the syringe to administer the medication.

Worming Groups of Horses

Under conditions of shared grazing, there are a certain considerations when it comes to worming:

  1. If one horse is shedding a lot of worm eggs, other horses who share the paddock are more likely to become infected.
  2. Most livery yards have a high turnover rate of horses. New horses with unknown worming histories are a potential concern.

Pasture Management

With good pasture management, you can help control the threat of worms. Consider the following points:

  • When possible, leave pasture un-grazed from late summer until spring. This will allow most worms to die off over the winter.
  • Graze pasture with sheep or cattle, as many equine specific parasites cannot survive if eaten by other animals.
  • Remove droppings at least twice a week to eradicate the source of new worm infections.

Keep a record of what you worm your horse(s) with and when. With new arrivals, worm based on their worming history. For horses with an unknown history, treat them for encysted small redworm and common worms with a five-day course of fenbendazole, or a single dose of moxidectin.

After worming, it is best to stable horses for up to three days to check their general health and reduce pasture contamination. Try not to move horses to clean pasture immediately after dosing, as this strategy contributes to higher rates of resistance in parasites.

Information sourced from Eqvalan. To view our range of Eqvalan worming products, click here.

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