Deworming & Internal Parasites

Article

Aerial Insecticide Spraying has Begun in Maryland

July 10, 2006

Exceptionally high rainfall during the last week of June has created ideal mosquito breeding conditions in Dorchester and Read More

Article

Nightshade and Ivermectin: A Deadly Mixture

May 01, 2006

Editor's note: When researching the unknown illness story on this page, the following study on ivermectin's interaction with a noxious weed was discovered. Nightshade and other poisonous plants should be eliminated from pastures.... Read More

Article

Four Horses Dead, One Ill; Dewormer Questioned

May 01, 2006

Four horses on a South Texas farm died from unknown causes in February; one horse is recovering. The horses' owner suspects the problems might have been caused by a dewormer; she has necropsy and other test results, but she has not released them... Read More

Article

Drug Resistance from Daily Dewormers

April 01, 2006

Are daily dewormers contributing to the development of drug-resistant parasites? A study from the North Carolina State University (NCSU) suggests they might be. The study used fecal worm egg count reduction tests (FWECRT) to evaluate small... Read More

Article

Four Horses Dead, One Ill; Owner Questions Dewormer

March 06, 2006

Four horses outside of Hebbronville, Texas, died after they showed clinical signs of an unknown illness in February; one horse is recovering. The horses' owner suspects the animals' problems might have been caused by a dewormer, and she is... Read More

Article

No Rotation Deworming (Excerpt)

November 02, 2005

Programs that use no rotation involve the continued use of one effective drug until it no longer reduces small strongyle numbers as indicated by fecal egg counts. The intervals of administration depend on the dewormer used, but this program is limite... Read More

Article

Deworming Strategies and Hurricane Recovery

November 01, 2005

The level of equine parasite transmission should be diminished on pastures evacuated due to flooding, said Craig Reinemeyer, DVM, PhD, president of East Tennessee Clinical Research in Knoxville, Tenn. "Many larvae would get washed away, and... Read More

Article

Botulism (Book Excerpt)

October 05, 2005

Botulism is the most potent biologic toxin known, and horses are highly sensitive to its presence and effects. The clinical effect on the horse may become severe enough to cause the horse to become recumbent and eventually to die from paralysis ... Read More

Article

Pinworm Problems

October 01, 2005

I have a 10-year-old mare being treated for pinworms. She incessantly rubs her tail. She also uses the wall of her stall or anything else available to lean on while defecating. Are these signs related? Could they be behavioral?... Read More

Article

Deworming Strategies and Hurricane Recovery

September 13, 2005

The level of equine parasite transmission should be diminished on pastures that were so flooded they had to be evacuated, said Craig Reinemeyer, DVM, PhD, president of East Tennessee Clinical Research in Knoxville, Tenn. "Many larvae would get... Read More

Article

Deworming Principles (Book Excerpt)

August 30, 2005

A thorough parasite control program involves a complete understanding of helpful management practices and knowing how different types of dewormers work.... Read More

Article

Tapeworm Treatment Time

August 15, 2005

Tapeworms (Anoplocephala perfoliata) are the only major variety of cestode, or flatworm, to infect horses. Recent studies have shown they are more plentiful in horses than previously thought and have described the harm they can do.... Read More

Article

Killing Resistant Parasites

August 01, 2005

2005 EQUINE SCIENCE SOCIETY SYMPOSIUM, TUCSON, ARIZ., MAY 31-JUNE 3

"Parasite resistance has emerged as a dilemma in the livestock industry as many classes of parasites are becoming resistant to dewormers," began Meghan... Read More

Article

Triad Specialty Products Licenses Feed-Through Fly Control Product to Pfizer

April 12, 2005

Piedmont Pharmaceuticals' wholly owned company Triad Specialty Products announced on April 7 that it has licensed its new equine feed-through fly control product to Pfizer Animal Health. Triad developed the product and received regulatory... Read More

Article

Fecal Egg Count Reduction Test Still the Gold Standard for Detecting Anthelmintic Resistance

April 01, 2005

Swedish veterinarians recently determined that the larval development assay (LDA, a fecal test) is not a reliable alternative to the fecal egg count reduction test (FECRT) in measuring anthelmintic (dewormer) resistance of strongyles in the... Read More

Article

GI Disease in Foals

February 01, 2005

Despite advances in veterinary medicine, the first few weeks of a foal's life can still be risky. Many health problems can arise, including myriad gastrointestinal (GI) disorders that can quickly drain a youngster of health, vigor, and sometimes... Read More

Article

Lice on Horses

February 01, 2005

Horses occasionally get lice, and a horse owner needs to know what to look for and how to treat these irritating parasites. Bill Clymer, PhD, of Amarillo, Texas (now a livestock parasitologist on the professional services staff of Fort Dodge... Read More

Article

Parasite Control Programs for Mature Horses

December 01, 2004

EDITOR'S NOTE: This is the final installment in a 12-part series on internal parasites of horses.

In last month's article, we discussed certain parasites that are found almost exclusively in horses less than two years of... Read More

Article

Age-Related Parasites: Scourges of Foals and Young Horses

November 01, 2004

Editor's Note: This is part eleven of a 12-part series on internal parasites of horses.

BY KAREN BRIGGS, WITH CRAIG REINEMEYER, DVM, PHD; DENNIS FRENCH, DVM, MS, DIPL. ABVP; AND RAY KAPLAN, DVM, PHD... Read More

Article

Feed Through Fly Control Options

October 20, 2004

Veterinarians and drug companies agree that feed-through fly control for horses--along with proper land and stable management--can keep barn fly populations under control. Fly control management is a serious problem facing horse farms of all... Read More

Article

Equimax Receives FDA Approval for Pregnant and Nursing Mares

October 01, 2004

The broad-spectrum dewormer Equimax (also labeled for tapeworms) recently received FDA approval for safety in pregnant and nursing mares. A French study confirmed the safety of ivermectin/praziquantel--the active ingredients in Equimax--for this... Read More

Article

Parasite Control Without--or Along With--Chemicals

October 01, 2004

EDITOR'S NOTE

This is part ten of a 12-part series on internal parasites of horses.

Our horses are lucky to live in an age when modern deworming drugs can pretty much rid them of parasites. They're living longer an... Read More

Article

Horse Care in the Fall

September 28, 2004

Fall deworming is important; winter is usually when internal parasites do the most damage and rob the horse of vital nutrients. By fall the worm eggs and larvae eaten during spring and summer have matured and are living in the digestive tract unless ... Read More

Article

Times Are a-Changin'

September 01, 2004

There are many of us old enough to remember nasogastric tube deworming of our horses. The vet would show up in his truck, haul out the buckets, pump, and hose, and we'd line up to twitch the horses and fill their stomachs full of whatever that... Read More

Article

Resistant Worms: Do Your Horses Have Them?

September 01, 2004

EDITOR'S NOTE: This is part nine of a 12-part series on internal parasites of horses.

Most people assume that when they administer a tube of dewormer to a horse, the drug is effectively killing worms. The drug must... Read More