Recent News for Genetic Problems

Article

The Future of Horses with HYPP

December 30, 2003

Letter to the Editor:

This letter must begin by saying how proud I am of a man whom I have never met.  His name is Steve Stevens of Houston, TX, the current president of the American Quarter Horse Association (AQHA).  Mr.... Read More

Article

Dietary Clues to Tying-Up

June 20, 2003

Recurrent exertional rhabdomyolysis (RER, a type of tying-up) is an inherited disorder in Thoroughbreds. Research suggests that RER involves an abnormality in the regulation of calcium in muscle cells. High-grain diets have been implicated as... Read More

Article

Speed Limit

March 05, 2003

The racing Thoroughbred is trapped between a rock and a hard place. The rock is speed, which evolved slowly by natural selection for 50 million years, then rapidly by human hand the last 500. The hard place is where we find our ward today, beset... Read More

Article

When Your Horse's Muscles Ache

March 01, 2003

Equine muscle injuries are often elusive, leading to frustration for the rider and a challenging diagnosis. ... Read More

Article

Diagnosis and Treatment of Rhabdomyolysis in Foals

February 13, 2003

We hear a lot about a horse experiencing rhabdomyolysis (tying-up) during or after exercise. However, foals are also susceptible to muscle damage. Stephanie Valberg, DVM, PhD, of the University of Minnesota, presented "A Review of the Diagnosis... Read More

Article

High-Risk Pregnancies and Sick Foals

January 09, 2003

In defining a high-risk mare, Bain said she is one which has had previous foaling problems such as dystocia (difficult delivery), hemorrhage, or a red bag delivery. He said a mare also could be at risk because of medical illness, surgery, colic... Read More

Article

Retina and Optic Nerve Disease

December 01, 2002

The retina is one of the most metabolically active tissues in the body. It consists of 10 layers of cells and nerve fibers. Nine layers compose the sensory retina, with a final layer, the retinal pigment epithelium (RPE), present next to the... Read More

Article

Locked Into Place

August 01, 2002

Much has been learned about exertional rhabdomyolysis (tying-up) in recent years, but unfortunately some of that knowledge has been troubling. For example, at least one newly recognized cause of tying-up in foals has, in identified cases, always... Read More

Article

Polysaccharide Storage Myopathy and Back Pain

August 01, 2002

As many as 40% of all cases of equine back pain are the result of soft tissue injury. The primary causes include chronic and recurrent exertional rhabdomyolysis (CER and RER, respectively), and an inherited enzyme deficiency called polysaccharid... Read More

Article

Tying-Up in Horses

July 01, 2002

Tying-up is the most common muscle problem in horses. This syndrome is also called azoturia, set fast, paralytic myoglobinuria, and chronic exertional rhabdomyolysis (ER). HYPP (hyperkalemic periodic paralysis) in Quarter Horses is a different... Read More

Article

Equine Pediatric Medicine (AAEP Convention 2001)

February 01, 2002

"While many outbreaks of respiratory disease in foals are infectious in nature, this is not always the case," she began. "Environmental factors can have a profound effect."... Read More

Article

Overo Lethal White Syndrome Update

November 01, 2001

Researchers have determined the coat patterns associated with overo lethal white syndrome newborn foals... Read More

Article

Exertional Rhabdomyolysis

October 10, 2001

Tying-up is a problem that has troubled horses and their owners for many years, and it has been known by many names. The old-timers who battled the syndrome in their draft horses following a Sunday away from the fields called it Monday morning... Read More

Article

HYPP: Hyperkalemic Periodic Paralysis

October 10, 2001

They gave the muscular Quarter Horse colt an ambitious name: Impressive. He lived up to the name in such dramatic fashion that it became a household word in Quarter Horse circles - especially among breeders and exhibitors involved in showing... Read More

Article

Combined Immunodefiency in Arabians

October 09, 2001

A newborn Arabian foal is possibly one of the most beguiling creatures on Earth. Elegant of feature and blessed with beauty, he's full of promise for the future--and often descended of royal blood and worth many thousands of dollars. Imagine how... Read More

Article

Medical Messengers--British Equine Veterinary Association

October 08, 2001

The annual meeting of the British Equine Veterinary Association provided a wealth of information on topics ranging from tendons and ligaments to muscle diseases, from disorders of the back to conformation. Sue Dyson, MA, VetMB, PhD, DEO, FRCVS,... Read More

Article

Tying Up is Split Up

October 01, 2001

Muscle disease in performance horses commonly is referred to as tying-up, exertional rhabdomyolysis, azoturia, or Monday morning disease. Horses experiencing tying-up show a stiff gait; reluctance to move; firm, painful muscle cramps; profuse... Read More

Article

Tying-Up Syndrome

September 13, 2001

I just bought a Thoroughbred filly which was in race training, but retired without running because of recurrent bouts of ‘tying-up.’ She had been turned out for six months before I got her, and never showed any problems while on the farm.... Read More

Article

Hyperkalemic Periodic Paralysis (HYPP) and Breeding

May 01, 2001

Is it safe to breed a Quarter Horse mare N/H (heterozygous) for hyperkalemic periodic paralysis (HYPP)?... Read More

Article

Equine Skin Disease

April 06, 2001

Equine skin diseases may be due to fungal agents (dermatophytes or ringworm), bacterial infections (dermatophilus or "rain scald"), or immune-mediated disorders (pemphigus foliaceous). Nodular skin diseases... Read More

Article

Neonatal Isoerythrolysis--The Silent Stalker

February 01, 2001

Neonatal isoerythrolysis is a silent stalker of foals. At birth, the foal is normal. In some cases, the foal shows subtle signs as an internal enemy attacks and the disease progresses to a point of no return; in others, it takes only hours for... Read More

Article

Tying-Up in Horses: Causes and Management

January 01, 2001

Perhaps the most frustrating of all problems that affect the athletic horse is the syndrome known as tying-up. Tying-up is a broad term that frequently is used to describe a wide variety of muscle disorders that affect the performance horse.... Read More

Article

Overo Lethal White Syndrome

January 01, 2001

Overo Lethal White Syndrome (OLWS) is a condition that occurs in newborn foals. The condition is genetic, and both parents carry the defective gene. Horses which carry this gene are most commonly overo white patterned horses (frame overos), but... Read More

Article

Genetic Testing: The Secret World Of Genes

December 01, 1998

Genetic testing in horses helps us learn about their physical characteristics, diseases, and much more.... Read More

Article

Foal Pneumonia

October 01, 1998

Your three-month-old foal has made it through the birthing process and the vulnerable neonatal period and now seems to be carefree--your little one just has to grow up to fulfill his destiny as a performance... Read More