Aluminum Phosphide Poisoning

Aluminum phosphide is an indoor fumigant used to kill insects in most, if not all, of the stored grains we and our horses are exposed to. Like most pesticides, it can cause major problems in unintended species when used incorrectly.

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Aortic-Iliac Thrombosis, Diagnosis and Treatment

He noted aortic-iliac thrombosis (TAI) can cause lameness, but the incidence in the United States is low. Damage to, and thrombus (blood clot) in, these large blood vessels might be caused by internal parasites.

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Frozen Semen Use in Barren Mares

To rectify the lack of information problem, Barbacini and colleagues launched a study to determine the fertility of barren mares inseminated with either fresh or frozen-thawed semen. Researchers investigated the effects of mare age and uterine fluid

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Immunostimulants for Foals

A product that could stimulate the immune systems of newborn foals to better fight infection of Rhodococcus equi would be very beneficial, said Steeve Giguère, DVM, PhD, of the University of Florida, at the 2008 American Association of Equine

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Emergency Veterinary Care at Horse Shows

Most horse show emergencies are able to be cared for on-site, but if a crisis develops, the horse should be stabilized and transported to a full-care facility, according to Rick Mitchell, DVM, of Fairfield Equine Associates in Newtown, Conn.

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DNA Testing for Twins (AAEP 2008)

Tissues from both the recipient and donor mare, as well as from the two stillborn foals, were submitted for microsatellite analysis. The analysis verified that the foals had identical genotypes and resulted from the transferred embryo.

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Deworming–To Rotate or Not to Rotate?

Rotational deworming–dosing horses with different classes of dewormers in rotation–is often recommended for controlling equine internal parasites. The theory is that by using all of the available effective deworming drug classes, we combine their

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Vaccination (AAEP 2008)

Pusterla discussed the effectiveness of three vaccination strategies against L. intracellularis, which causes proliferative enteropathy (a spreading intestinal disease). “Although the clinical entity (L. intracellularis infection), diagnostic evalua

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Ivermectin Toxicosis

Ivermectin has become one of the most widely used deworming medications worldwide since its introduction 25 years ago. It’s usually considered to have a large margin of safety, but it can be highly toxic in rare circumstances

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Testing for (AAEP Convention 2008)

Clostridium difficile bacteria can cause severe, sometimes fatal colitis in horses. When a horse develops severe diarrhea (particularly if blood is present), C. difficile might be suspected, but veterinarians must confirm the infectio

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Equine Welfare Brochure Available to AAEP Members


Equine welfare is one of the major focus areas of the American Association of Equine Practitioners (AAEP). In recent months, the topic of equine welfare has further grown in importance due to the increasing number of unwanted horses.

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Medication Thresholds

A drug’s withdrawal time indicates a suggested timeline by which the last dose can be administered before an event to avoid blood or urine test levels that exceed the allowable regulatory threshold. Using these thresholds encourages standardization

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Neurology is Not a Euphemism for Necropsy

Reed believes that future goals for managing neurologic disease in horses should be to decrease mortality and improve outcomes. This would be best achieved by developing improved diagnostic tools to facilitate early diagnosis and treatment

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AAEP Releases Racing Safety and Welfare Recommendations

The American Association of Equine Practitioners today issued guidelines for protecting the health of the Thoroughbred racehorse. The white paper, “Putting the Horse First: Veterinary Recommendations for the Safety and Welfare of the Thoroughbre

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Medication in Racing and Performance Horses

Medication issues in equine competitions might have reached their highest level of public focus in 2008 due to high-profile situations such as Kentucky Derby winner Big Brown’s steroid regimen and the disqualification of several Olympic horses for

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