The ABCs of FECTs

Fecal egg count tests (FECTs) allow veterinarians to develop a tailored deworming schedule for each horse.
Please login

No account yet? Register


Dealing with poop is often one of the least favorite chores for horse owners, but manure can actually be a window into parasite surveillance and detection of dewormer resistance.

As more veterinarians recommend strategic deworming programs rather than rotational methods, fecal egg count tests (FECT) become especially important.

“Fecal egg count tests allow veterinarians to determine a tailored deworming schedule for each horse and to detect resistance on farms,” said Hoyt Cheramie, DVM, MS, Dipl. ACVS, manager of Merial’s Large Animal Veterinary Services. “Horse owners should work with their veterinarians to ensure that fecal egg count tests are properly conducted by independent, reputable laboratories.”

An FECT measures the number of strongyle eggs a horse passes in each gram of his manure. When you send a sample to your veterinarian, the results will consist of a number followed by EPG (eggs per gram), which will tell you whether your horse is a high (generally more than 500 EPG), medium (200-500 EPG), or low (less than 200 EPG) shedder. When performed properly, the results from FECTs can help determine the appropriate treatment protocol for your horse

Create a free account with to view this content. is home to thousands of free articles about horse health care. In order to access some of our exclusive free content, you must be signed into

Start your free account today!

Already have an account?
and continue reading.


Written by:

Related Articles

Stay on top of the most recent Horse Health news with

FREE weekly newsletters from

Sponsored Content

Weekly Poll

sponsored by:

What signs does your horse show when he has gastric ulcers? Please check all that apply.
56 votes · 138 answers

Readers’ Most Popular

Sign In

Don’t have an account? Register for a FREE account here.

Need to update your account?

You need to be logged in to fill out this form

Create a free account with!