Equine polysaccharide storage myopathy (EPSM, PSSM, EPSSM) is an inheritable glycogen storage disease of horses that causes exertional rhabdomyolysis. … While incurable, PSSM can be managed with appropriate diet and exercise. There are currently 2 subtypes, known as Type 1 PSSM and Type 2 PSSM.
What are the symptoms of PSSM in horses?
Clinical signs of PSSM range from mild to severe. They include sweating, lameness, sore muscles, undiagnosed lameness, poor performance, and muscle tremors (“tying up”). These may occur with or without exercise. Under saddle, affected horses may be reluctant to go forward or collect.
How serious is PSSM in horses?
This is a serious situation, as it can damage the horse’s kidneys if they become dehydrated. Very young foals with PSSM occasionally show signs of severe muscle pain and weakness. This occurs more often if they have a simultaneous infection such as pneumonia or diarrhea.
What do you feed a horse with PSSM?
These low-starch feeds should be fed with good-quality grass hay or a maximum of 50 percent alfalfa hay. Regular turnout for as much time as possible is critical to successful management of PSSM horses. They do not do well confined to stalls or missing days of exercise.
What does PSSM1 mean?
Polysaccharide storage myopathy (PSSM1) is characterized by the abnormal accumulation of the normal form of sugar stored in muscle (glycogen) as well as an abnormal form of sugar (amylase-resistant polysaccharide) in muscle tissue.
How do I know if my horse has EPM?
Paralysis of muscles of the eyes, face, or mouth, evident by drooping eyes, ears, or lips; Loss of sensation of the face; Difficulty swallowing; and. Head tilt with poor balance—the horse might assume a splay-footed stand or lean against stall walls for support.
Is PSSM in horses progressive?
The clinical characteristics of PSSM vary between breeds, from muscle pain, cramping and cell damage with exercise, to progressive muscle atrophy. … This mutation results in the accumulation of abnormal complex sugars within skeletal muscle of horses. This form of PSSM is termed Type 1 PSSM.
How common is PSSM in horses?
PSSM is most prevalent in American Quarter Horses and their related breeds (Paint horse, Appaloosa, Appendix Quarter Horse), Draft horse breeds (especially Belgian Draft and Percherons), and Warmblood breeds. The Belgian Draft been shown to have a 36% prevalence of PSSM.
How do you treat horse tying up?
If your horse ties up, here are suggestions of what to do:
- Stop exercising the horse and move it to a box stall. …
- Call your veterinarian.
- Blanket the horse if the weather is cool.
- Determine if the horse is dehydrated due to excessive sweating.
How much is a 5 panel test for horses?
Test kits for the five panel test can be obtained by request from the AQHA. For members, the test will cost $85. Nonmembers will pay $125. A five panel test in conjunction with the regular DNA test required for breeding stock will be $105 for members, $145 for nonmembers.
What does vitamin E do in horses?
Vitamin E is a fat-soluble vitamin that acts as an important antioxidant for horses. It helps maintain a healthy immune system and supports normal nerve and muscle function. Horses need vitamin E in their diet because they cannot synthesize it endogenously in their body.
How long does it take a horse to recover from tying up?
Recovery time may be up to 6-8 weeks, and ability to return to work will vary with severity. Horses that suffer from chronic attacks of tying up can often be managed successfully with strict exercise, management and diet protocols.
What is PSSM positive in horses?
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. … The primary clinical sign of this disease is muscle cramping or tying-up; however, clinical signs may vary with different breeds and severity.
What does N N mean in horses?
Selective breeding to normal (N/N) horses could entirely eliminate HYPP disease. As HYPP is inherited as a dominant condition, it can and is being spread to other breeds.
What is pssm2?
Warmbloods with type 2 PSSM have painful firm back and hindquarter muscles, reluctance to collect and engage the hindquarters, poor rounding over fences, gait abnormalities, and slow onset of atrophy especially when out of work.
Which of the following diseases is only found in the Arabian horse breed?
Cerebellar abiotrophy is a neurological genetic disease found mostly in the Arabian horse breed. There is no way to cure cerebellar abiotrophy and it is not contagious, but there are ways to prevent the spread of it through responsible breeding practices.