Worming Programmes

There are four main classes of anthelmintics (wormers). These are:

  • Benzimidazoles: eg. fen/me- bendazole
  • Tetrahydropyrimidines: eg. pyrantel embonate
  • Macrocyclic lactones: eg. Iver/aver -mectins
  • Praziquantel based wormers (tapeworm treatment ONLY)

Using the same class of wormer every season will increase the chance of resistance developing.  It is therefore important to rotate the type of wormer used after each grazing season.

Targeted Worming Programmes

Tailored programmes ensure you target specific worms with an effective product at the correct time of year.

Additionally using faecal worm egg count testing during the year will allow anthelmintics to be used appropriately and only when necessary. Many companies, commercial laboratories and veterinary practices, can perform faecal worm egg counts. It‘s important to remember that faecal egg counts cannot detect encysted small redworms or tapeworm eggs, so it is important to treat for these parasites at certain time points during the year.

Members of the Horse Health Programme are eligible to receive a Tapeworm Saliva Test which tests for the likelihood of tapeworm infection and is used to determine if a tapeworm treatment is required. As part of the plan, members also receive an appropriate wormer. Sign Up Today!

A new blood test has been developed to detect encysted small redworms, and this can be carried out by your vet. If negative, it may not be necessary to treat your horse with Moxidectin at all. Although this particular test is not currently included as a benefit of the Horse Health Programme, you will receive the 10% off discount as a member on products and services from your veterinary practice.

During the grazing season an alternative product should be used for each subsequent year’s grazing season so that the three main types/classes of anthelmintic (praziquantel is excluded from this rotation as it only treats tapeworms) are used on a rolling three-year basis.

If you have a new horse, it is sensible to worm him with a product or combination of products that will kill all types and stages of roundworm (including encysted and inhibited small redworm) and tapeworm. Stable him for 48 hours after worming before turnout to allow the wormer to take effect and prevent viable eggs from being deposited on the pasture.