Martin Krarup Nielsen, DVM, PhD, Dipl. ACVM

Martin Krarup Nielsen, DVM, PhD, Dipl. ACVM, is an associate professor of parasitology and the Schlaikjer professor in equine infectious disease at the University of Kentucky's Maxwell H. Gluck Equine Research Center, in Lexington. His research focus includes parasite diagnostic measures and drug resistance. Known as a foremost expert in the field of equine parasites, Nielsen chaired the American Association of Equine Practitioners’ (AAEP) parasite control task force, which produced the “AAEP Parasite Control Guidelines.”

Articles by Martin Krarup Nielsen

Diatomaceous Earth's Deficiency

Learn why this deworming technique doesn't have an antiparasitic effect in horses. Read More

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

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

Tapeworms in Horses

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

Parasite Control Recommendations for Boarded Horses

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

Dewormer's Effect on Scratches

Find out what kinds of skin parasites can cause scratches and how these pests respond to ivermectin treatment. Read More

What is a Neck Threadworm, and Can it Hurt My Horse?

An equine parasitologist answers a horse owner question about these mysterious worms. Read More

Should I Deworm My Horse in the Winter?

Is it worthwhile to deworm my horses during the winter? Read More

Deworming Dilemma

An owner seeks advice about deworming her horse that lives alone and travels to a public barn for exercise. Read More

Deworming: Less is More

My vet said we should stop deworming our horses and do two fecal egg counts per year instead. Is this okay? Read More

Horse Parasite Control Programs

Because of the potential for anthelmintic resistance, deworming decisions should be based on fecal egg counts. Read More

Parasites: Roads to Resistance

Parasites follow Darwin's law: survival of the fittest. In fact, all biological organisms adapt. Read More