Worming your horse on a regular schedule is key to good health in your equine partner.  Worms are the leading cause of colic in horses. Here is  a great article from Horse Channel.com. They also have a couple of good forms to download at the end of the article.

New Thinking on Deworming

There’s a good chance your deworming strategy needs updating.

By Toni McAllister | May-08


Click to download forms:

  1. Chemicals in various wormers
  2. Worming schedule chart
  3. Deworming schedule chart


The key points in this article are:

1) Veterinary Expertise and Fecal Egg Count Reduction Tests

Taking tests before and  after worming is the only way to really know if your worming product is effective for your horse and your farm.

The fecal egg count reduction test (FECRT) is a simple, two-step process that involves your veterinarian: A first test analyzes the   number of eggs from a horse’s fresh manure sample before deworming; a second test, conducted about 10 days after deworming, analyzes the number of eggs in a new manure sample from the same horse.

2)Target the Parasites That Are on Your Farm

Not all farms are the same. Worms prevalent in one location may not be in another. Testing is again the only way to really know which the parasites are on your farm

3)Age Considerations

The types of worms change throughout a horse’s life cycle.  While small strongyles and possibly tapeworms are the biggest concern for senior — and adult — horses, ascarids are most problematic for foals

4)Capitalize on Built-in Immunity

Some horses do have a natural immunity to internal parasites. FECRTs might reveal that deworming three times a year is effective for these horses, whereas other herd members might need more frequent treatments because they carry a higher parasite load.

5) Resistant Parasite

The more you expose a parasite to any drug, the greater chance you have of developing resistance.

6)Rotation Isn’t Carved in Stone

Make sure that what you rotate with is effective for your horse. Once FECRT results are in, your veterinarian will recommend a deworming strategy that may include rotation. There are three chemical classes of dewormers available today: macrocyclic lactone, pyrimidine and benzimidazole

7)Follow Dosage Direction

Correct dosing with the appropriate dewormers is critical