Deworming & Internal Parasites


Why Can't You Kill Equine Internal Parasites in the Field?

July 19, 2017

Are there any parasite-killing products I can apply to pastures after I rotate my horses to a different one?... Read More


Swiss Researchers Encourage Modern Parasite Control Methods

July 15, 2017

Using their "check-before-treat" program, scientists are finding record-low equine parasite burdens in Switzerland.... Read More


Ivermectin Could be Ineffective Against Some Pinworms

July 07, 2017

Ivermectin was ineffective in treating pinworms in a herd of Welsh ponies. Fenbendazole, however, eliminated the worms.... Read More


Tapeworms in Horses

July 01, 2017

Some horses are more susceptible to this common parasite than others. Here's what you need to know.... Read More


10 Parasite and Deworming Resources on

June 08, 2017

Transition to targeted deworming without a hitch with these free resources.... Read More


Don't Divvy Up The Dewormer

June 07, 2017

Find out how to deworm your horses without promoting drug resistance. ... Read More

It is important that you know the basic characteristics of common equine parasites, as well as the main mechanisms of action and affects of the common deworming compounds.


Don't Let Deworming Myths Keep You Up

June 02, 2017

By taking a research-based parasite control approach owners and vets effectively protect horses from internal parasites.... Read More

Apple, an Appaloosa pony, received his vaccinations and health exam by a Ross University veterinary student while his owner provides general information.


Applying Research Knowledge During Equine Wellness Clinics

May 25, 2017

A PhD student describes her recent experience applying her research skills during an equine community outreach event.... Read More


Common Dewormers: Still Effective Against Small Strongyles?

May 20, 2017

Study results revealed that three commercially available dewormers showed poor efficacy on the majority of farms tested.... Read More

It is important that you know the basic characteristics of common equine parasites, as well as the main mechanisms of action and affects of the common deworming compounds.


Deworming Drug Resistance in Ethiopian Working Horses

April 28, 2017

The study evaluated the effectiveness of ivermectin and fenbendazole, as well as owners' deworming practices.... Read More

The tapeworm, <em>Anoplocephala perfoliata</em>, gathers around the junction between the small and the large intestine in the cecum. This parasite is very common and most horses tolerate it well. Large tapeworm burdens can cause colic in the horse. Pyrantel (double dose) and praziquantel are effective drugs for treating tapeworms.


Researchers Develop Saliva-Based Equine Tapeworm Test

April 26, 2017

This could encourage the use of targeted deworming programs to help reduce parasite resistance, scientists said.... Read More

Transabdominal ultrasonography is useful for reliably identifying worm burdens of more than 10 ascarids.


The Future of Parasite Control?

April 22, 2017

Anthelmintic resistance occurs worldwide. With only three drug classes to choose from, are we running out of options?... Read More


Parasite Control Recommendations for Boarded Horses

April 21, 2017

Vets recommend a whole-facility-focused approach to parasite control, but what do you do when you don't manage the farm?... Read More


Parasite Control: An Update

April 19, 2017

In the past, researchers developed new classes of antiparasitic compounds every 10 years or so. But what works today? ... Read More

Fecal egg counts help owners identify high-shedding horses and whether the dewormer used worked.


What is Your Horse's Fecal Egg Count Telling You?

April 17, 2017

Find out how a fecal egg count test can help you better target the parasites in your horse herd. ... Read More


Small Strongyle Arrested Development Not Found in Foals

April 14, 2017

A recent study suggests small strongyles might not behave the same way in foals as they do in adult horses.... Read More


Pasture Management for Parasite Control

April 12, 2017

With parasites' growing anthelmintic resistance, remember to include pasture management in control efforts.... Read More


Manure Storage Methods for Fecal Egg Counts Tested

April 10, 2017

Researchers found that samples can be refrigerated for up to a week without adverse effects on egg counts.... Read More

It is important that you know the basic characteristics of common equine parasites, as well as the main mechanisms of action and affects of the common deworming compounds.


Worms vs. Drugs: The Fundamentals

April 07, 2017

Learn about common equine parasites, as well as the mechanisms and effects of common deworming compounds.... Read More


Researchers Evaluate Parasite Patterns in Feral Horses

April 05, 2017

Overall horses coped well with parasites. But the heavier the parasite load, the lower the horse's body condition score.... Read More

Fecal egg counts (completed under a microscope) performed before and after deworming help owners determine whether a drug is effective and which horses are low, moderate, or high shedders.


Novel Equine Deworming Principles, Procedures in the Works

April 04, 2017

Researchers are working to help us better evaluate and manage parasites in the face of anthelmintic resistance.... Read More


The Horse, Zoetis Partner for Parasite Awareness

April 01, 2017

April is Parasite Awareness Month, and we're bringing you up-to-date information about parasite control all month long!... Read More


Shake Off the Winter Doldrums and Get Back in the Saddle

March 16, 2017

Get a head start on readying horses for the warmer weather with these tips.... Read More


Nielsen Named Co-Editor of Parasitology Journal

February 21, 2017

Dr. Martin Nielsen was recently named the North American co-editor-in-chief of Veterinary Parasitology.... Read More


How Immunosenescence Impacts Senior Horse Care

January 27, 2017

Your horse's immune system is aging with him. Here's what to remember when managing your old horses.... Read More