Genetic diseases can cause significant emotional and financial stress, and the American Quarter Horse Association (AQHA) is committed to educating owners and breeders about inherited conditions so they can make informed breeding decisions. The American Quarter Horse Foundation (AQHF) provides funding for a wide range of research projects, having granted more than $12 million in support of equine research to date. Genetics research accounts for 20 percent of that total, with 53 projects funded at 12 universities.

1. DNA is found in the nucleus of cells. Samples submitted for genetic testing are usually hair, blood, or tissue. Hair samples must contain the “bulb,” which looks like a tiny ball at the root of the hair. This is where the DNA is located. When submitting hair samples, make sure to pull, not cut, the hairs so the bulb is present. Blood and tissue samples require additional steps, such as an anticoagulant (for blood) or freezing (for tissues). Always follow the testing laboratory’s instructions for sample submission and contact them with questions.

Is it hot enough for you? If you feel suppressed by repeated days of hot and humid weather, you can be sure that your horse feels worse.

Polysaccharide storage myopathy or PSSM is a muscle disease that occurs primarily in horses with Quarter Horse bloodlines such as Quarter Horses, Paint Horses, and Appaloosas. PSSM also occurs in other breeds including Drafts, Draft crossbreeds, and Warmbloods. The primary clinical sign of this disease is muscle cramping or tying-up; however, clinical signs may vary with different breeds and severity. There are several different abbreviations used to describe polysaccharide storage myopathy including PSSM, EPSM and EPSSM. Tying-up also occurs in other breeds of horses such as Thoroughbreds and Standardbreds, but this form of tying-up has a different cause.