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Britain’s Animal Health Trust To Close; Equine Research Affected

Britain's Animal Health Trust (AHT) is set to shutter its doors forever. A nonprofit organization dedicated to veterinary and scientific research, the AHT has undertaken extensive disease surveillance work around the world. The Trust has virus and bacteria isolates that date back 50 years and it holds DNA samples for every registered Thoroughbred in Britain. The Trust has also completed cutting-edge research on equine sarcoid treatment and the use of HDR brachytherapy to address equine cancer.

The AHT board of trustees reported that they were unable to secure funding to make the organization viable long term and that additional announcements would be forthcoming. The AHT was established by Dr. Reginald Wooldridge in 1942 and has offered veterinary services to cats, dogs and horses since its inception. The staff included scientists, veterinarians, nurses and support staff.

The board began indicating in March that the organization was facing financial struggles and began exploring reorganization options, including closing its small animal and equine practices.

Though financial donations were offered, the board noted that it needed longer-term, substantial funding options to remain functioning. They reported that they would feel dishonest if they accepted the donations and were still forced to close.

Read the AHT full statement here.

Weaning Woes: Is Artificial Weaning Hard On Horses?

Weaning, where a foal is removed from his dam, can be heartwrenching for both the humans and the animals involved. During traditional weaning, foals are forcibly separated from their dams at six months of age. However, left to their own devices, a foal will eventually separate from his mother on his own accord; this is considered “natural weaning.” Little research has been done on natural weaning.

The relationship between a mare and her foal focuses not only on providing sustenance to the youngster, but on the imparting of social skills that will allow the foal to become a well-adjusted part of an equine herd. Researchers in France studied natural weaning to determine if it could offer benefits to the mare and foal.
Drs. Séverine Henry, Hrefna Sigurjónsdóttir, Aziliz Klapper, Julie Joubert, Gabrielle Montier and Martine Hausberger studied three groups of semi-feral Icelandic horses: 16 mares with their foals, all owned by a riding school. The researchers discovered that the weaning age of foals varied greatly, but that foals were on average nine months old when they willingly stopped nursing from their mother.

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Surprisingly, the foal didn't gradually taper off his suckling before weaning nor did the mare become more aggressive with her foal before weaning; it seems the foal simply stopped nursing. Immediately after weaning, the foals spent about as much time with and stayed as close to their mothers as before weaning, indicating that they still needed social contact with their mothers.
None of the mares lost any body condition even though they were in foal and had a nursing foal on their side, though their breeding may have something to do with this: Icelandic horses are notoriously hardy.

Artificial weaning generally causes high levels of stress in foals and this is often the time when stereotypies like cribbing or weaving begin. The scientists hope that this data will assist in providing a better understanding of what happens in the mare-foal relationship, specifically from a social point of view, and how artificial weaning can affect foals.

Ask Your Veterinarian Presented By Kentucky Performance Products: What Do We Know About Ulcers?

Veterinarians at Rood and Riddle Equine Hospital answer your questions about sales and healthcare of Thoroughbred auction yearlings, weanlings, 2-year-olds and breeding stock.

QUESTION: What do we know about the causes and best treatments for ulcers?

DR. KATE CHRISTIE: Equine gastric ulcer syndrome is a common condition in the performance horse with upwards of 90% of horses having evidence of gastric ulceration within two to three months of intensive training. Frustratingly, clinical signs vary from horse to horse and gastroscopy remains the only definitive diagnosis for ulcer disease in the adult horse.

The majority of gastric ulcers occur in the non-glandular portion of the stomach and are associated with exposure of this area to the acidic contents of the stomach. Some of the most important conditions that increase exposure to stomach acids include long periods between eating and high levels of exercise and training. Ulcers can also be located in the glandular portion of the stomach, specifically in the pylorus or outflow tract of the stomach. Gastric ulcers in this region of the stomach are less completely understood, but may be associated with breakdown of natural protective barriers. Unlike other species, bacterial infection does not seem to play a role in equine gastric ulcer syndrome.

Dr. Kate Christie

Once a diagnosis of gastric ulcer disease has been reached, treatment and management should be tailored to each individual horse. A combination of pharmaceutical intervention as well as environmental management is often the most successful. Horses that go long periods of time without access to forage, especially those on a high grain diet, are at increased risk of gastric ulcers.

Providing constant access to forage is key in the prevention and management of equine gastric ulcers. Adding alfalfa to the diet may also be helpful as it is naturally high in calcium and can act as a buffer for the highly acidic contents of the stomach.

Medications used to treat gastric ulcers in horses have the main goal of decreasing the acidity of the stomach. Commonly used medications include omeprazole (GastroGard, UlcerGard) and ranitidine (Zantac). Sucralfate is also commonly administered as a coating agent to help heal ulcerations. GastroGard is the most commonly used medication and is the only medication with FDA approval for the treatment of gastric ulcers in horses.

A long-acting injectable omeprazole has shown promise and may offer an alternative to traditional omeprazole therapy although further study is needed. Glandular ulcers can be more difficult to treat and often require longer courses of treatment.

In some cases, treatment with a medication called misoprostol may be recommended if these ulcers fail to respond to GastroGard alone. The only way to confirm resolution of gastric ulcers is repeat gastroscopy which is typically recommended after a four-week course of treatment.

Dr. Kate Christie grew up in Halifax, Nova Scotia, where she developed her love of horses actively competing in the show hunter world and watching Standardbred racing at the with her grandfather. She received her undergraduate degree in Life Sciences as well as a Master's degree in Pharmacology and Toxicology from Queen's University in Kingston, Ontario where she continued her riding career and further developed a passion for veterinary medicine. Kate graduated from the North Carolina State College of Veterinary Medicine in 2014 and went on to complete a year-long rotating hospital internship at Rood and Riddle Equine Hospital (2014-15) prior to entering a Large Animal Internal Medicine Residency at the University of Georgia. She became boarded in large animal internal medicine in 2018 at the completion of her residency program. Kate remained at the University of Georgia as a clinical associate professor for one year and is excited to be returning to Lexington to join the Rood and Riddle internal medicine team. Her professional interests include gastrointestinal disease, infectious and non-infectious respiratory disease, and equine pharmacology. Outside of work, Kate enjoys spending as much time as possible with her retired show jumper, Skye. When not in the saddle, she enjoys trail-running, hiking, and traveling with her husband.

The post Ask Your Veterinarian Presented By Kentucky Performance Products: What Do We Know About Ulcers? appeared first on Horse Racing News | Paulick Report.

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Multi-pronged Approach To Insect Control Helps Minimize VS Risk

Vesicular stomatitis (VS) is a painful viral disease that causes lesions on the lips, tongue, muzzle, ears, udder, sheath or coronary bands of horses and other livestock. Though most horses recover from the virus on their own, some horses need supportive care to recover.

VS is endemic in southern Mexico and occasionally travels toward the United States. In 2019, 1,144 premises were affected in eight states: Colorado, Kansas, Nebraska, New Mexico, Oklahoma, Texas, Utah and Wyoming. Thus far in 2020, premises in Arizona, New Mexico and Texas have been affected by the disease.

VS can be spread in two ways: through insect vectors and through direct contact with infected animals. To prevent either mode of transmission, increased biosecurity measures should be put in place. This includes implementing strategies to prevent contact of infected animals and contaminated items like feed troughs, tack and equipment.

Using fly spray, fly predators and other methods to control black flies and biting midges, which are known to carry the disease, is important to protect equines from VS. Biting midges love wet areas, so removing wet leaves and mud around troughs or ponds will help minimize potential habitat.

Though most insect activity occurs in warmer months, midges can be more cold-tolerant and spread the disease even in cooler months. It is not known if other insects can transmit the disease, so it's important to control insects on multiple levels, including premise, barn and animal level. This may include keeping horses inside at dusk and dawn or using fans to keep air moving; maintaining well-draining footing around water sources, mowing vegetation and reducing the use of bright lights at night, which attract insects.

Applying insecticides and repellents to animals that are outside is important, but they must be applied repeatedly to be effective. Fly masks, sheets and leg wraps can also be helpful, but must cover where VS lesions occur.