Takeaways. Polysaccharide storage myopathy (PSSM) is a disease that results in an abnormal accumulation of glycogen (sugar) in the muscles.
What breeds are affected by PSSM?
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.
Can you ride a horse with PSSM?
Once conditioned, some PSSM horses thrive with four days of exercise as long as they receive daily turnout. For riding horses with type 2 PSSM, a prolonged warm-up with adequate stretching is recommended.”
Is PSSM in horses painful?
How is PSSM treated? If you think your horse is showing signs of “tying-up”, you should call the vet immediately as it can be very painful and stressful for the horse. Exercise should be stopped straight away and the horse should be kept calm until the vet gets there.
What is the difference between PSSM1 and PSSM 2?
For clarity, the form of PSSM caused by a glycogen synthase 1 (GYS1) gene mutation is now termed type 1(PSSM1) whereas the form or forms of PSSM that are not caused by the GYS1 mutation and whose origin is yet unknown are now termed type 2 (PSSM2).
How is PSSM diagnosed?
Muscle Biopsy: PSSM can be diagnosed based on microscopic evaluation of a muscle biopsy in horses over two years-of-age, however, a definitive diagnosis of the type 1 form of PSSM requires genetic testing. The sample is taken from the semimembranosus muscle, which is part of the rear limb hamstring muscles.
Is PSSM in horses progressive?
Polysaccharide Storage Myopathy (PSSM) is an inherited muscle disease that affects many and diverse breeds of horses. The clinical characteristics of PSSM vary between breeds, from muscle pain, cramping and cell damage with exercise, to progressive muscle atrophy.
Is beet pulp good for PSSM horses?
If hay quality is poor or if horse owners are looking to stretch their hay supply, beet pulp provides a number of benefits to the horse. … Thus, it is a safe feedstuff for horses with metabolic concerns such as equine Cushing’s syndrome, insulin resistance and polysaccharide storage myopathy (PSSM/EPSM).
What horses should not eat PSSM?
When designing a feeding program for horses with PSSM it is important to limit energy sources containing high starch ingredients such as sweet feed, corn, wheat, oats, barley, and molasses. High fat concentrates should be used as alternative energy sources in exercising horses.
What should 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 are the symptoms of HYPP in horses?
HYPP is a muscular disease caused by a known genetic mutation with an autosomal dominant mode of inheritance. Affected horses can exhibit signs that include muscle tremors, weakness, paralysis and collapse.
Is EPM in horses treatable?
Equine protozoal myeloencephalitis (EPM) is a parasitic infection of horses caused by Sarcocystis neurona that can result in devastating neurologic disease. Infection with S. neurona can also cause a neuromuscular disease that doesn’t result in destruction of neurological tissues, and this is treatable.
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.
Can you breed a mare with PSSM?
We also know from the pedigrees of affected horses that the sires and dams of PSSM horses share common bloodlines. Thus, it would appear that this might be a recessive trait where a copy must be inherited from both sire and the dam for the foal to have PSSM. … We therefore do not recommend breeding PSSM mares.
What is the difference between HYPP and PSSM?
PSSM can often be managed with diet and exercise changes but there is no cure or medication used to treat it. HYPP is an inherited muscle disease causing an abnormality in how muscle cells manage electrolytes.