The USA Equestrian (USAE) Board of Directors approved a rule change on Jan. 19 that should reduce the incidence of corticosteroid abuse in equine athletes. The USAE sets rules for 27 breeds and disciplines competing in the United States, and is the U.S. equestrian national governing body. The corticosteroid rule will go into effect Dec. 1, 2003.

The USAE’s Veterinary and Equine Drugs and

Saville presented a summary of what is known about EPM, and he believes that with better understanding of the disease, wildlife management, risk-factor manipulation, prophylactic medications, and possible vaccination, that prevention of EPM can be attained.

Evidence of West Nile virus (WNV) was found in 35 aborted fetuses in Kentucky since July of 2002, according to Lenn Harrison, VMD, head of the Kentucky Livestock Disease Diagnostic Center in Lexington. “We have handled about 400 aborted fetuses and tested them, so this is less than 10%,” he reported on Feb. 4. He emphasized that WNV has not been known to cause abortion in mares; therefore,

There were many more presentations and discussions at this year’s AAEP Convention than could be contained in these pages. Other articles from the convention can be found online at www.TheHorse.com/AAEP2002. Below are some of the articles that can be found on the site.

• Comparison of Three Holding Solutions for Cooled Storage of Equine

Michelle Henry Barton, DVM, PhD, of the University of Georgia, recently completed a project on treating endotoxemia with polymyxin B (PMB), an alternative to endotoxin antibody products. The drug PMB kills many Gram-negative bacteria and also binds endotoxin, preventing interaction of endotoxin with white blood cells (WBC) as do endotoxin antibody products–thus heading off the damaging

Horseman’s Day, held for the third time as part of the annual AAEP convention, was another rousing success. Helping stimulate the interest and enthusiasm was the quality of the speakers. They couched their talks in terms the average horse owner could understand, but they certainly didn’t talk down to them. It was the right mixture of scientific terminology and backyard talk to get the message

The bacterial disease “pigeon fever,” also known as dryland distemper, usually is seen west of the Mississippi–especially in California and southwestern states–but it has been recognized in Kentucky and Florida in increasing numbers in recent years. There was a small outbreak in Kentucky in November 2002 (see article #4040 at www.TheHorse.com). Some

MILNE LECTURE PART 1

Bucked Shins

The Milne Lecture is also known as the State of the Art Lecture because each year’s topic is selected for its groundbreaking qualities and potential to change the paradigms by which veterinarians and researchers understand that topic. This year’s Milne Lecture (which is named after Frank J. Milne, an AAEP

Equine muscle injuries are often elusive, leading to frustration for the rider and a challenging diagnosis for the veterinarian. Since muscle injury can accompany and/or mimic skeletal problems, tendon or ligament injury, or neurological disease,

Probably the foremost biomechanics researcher in the country, Hilary Clayton, BVMS, PhD, MRCVS, McPhail Dressage Chair in Equine Sports Medicine at Michigan State University’s McPhail Equine Performance Center, discussed recent lower limb research during the 16th annual Bluegrass Laminitis Symposium. Some of the studies she described were performed in collaboration with researchers at

INFECTIOUS DISEASE FORUM

With West Nile virus (WNV) marching across the United States and affecting both horses and humans, infectious disease prevention has been a hot topic in barns, the media, veterinary clinics, and elsewhere. During the Infectious Disease Forum, moderated by Josie Traub-Dargatz, DVM, MS, Dipl. ACVIM, professor of equine medicine

We used to call it the “creeping crud”–a colorful, youthful label applicable to any gross-out skin disease the horse happened to have (and not to be confused with the cold-and-flu-like symptoms in humans that earned the same appellation). Besides the crud, there were also those weird little bumps that could show up now and then on the horse–not quite as disgusting, but unpleasant

Mares in performance careers are sometimes a frustration to their trainers and riders because during estrus, they can have difficulty concentrating on their work or have “behavioral problems.” Many horse owners resort to hormone therapy to keep mares from coming into heat while training or showing. The most commonly used drug is a synthetic progestin (altrenogest, marketed as Regumate) given

A lot has happened in the field of equine nutrition research in the last five years.

Granulosa-theca cell tumors (GTCTs) are usually tentatively diagnosed by rectal palpation and ultrasound examination after an owner complains of poor performance or aggressive, sexual, stallion-like behaviors. However, the diagnosis can’t be confirmed unless an exploratory laparotomy is performed and the tumor is biopsied (or removed and sectioned for histopathology). These tumors tend to mak