ysis, and equine-rhabdomyolysis syndrome. A great deal of controversy has arisen regarding the cause of this syndrome; however, it has become clear. In equine practice, despite the fact that cases of acute sporadic rhabdomyolysis ( ie, ‘tying up’) are quite common, the pathophysiology of this disease is still. Learn about the veterinary topic of Exertional Myopathies in Horses. Although exertional rhabdomyolysis was previously considered a single disease.

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An Arabian endurance horse quits at the 25 th mile, trembling at the top of a hill. No rhabdomyolyss in the ability of skeletal muscle to metabolize glycogen have been identified in PSSM horses and in fact, PSSM horses have higher glycogen utilization rates than healthy horses during anaerobic exercise.

Equine rhabdomyolysis.

Beyond a highly probable hereditary factor, there does not seem to be a single cause that triggers ER in horses. Excessive sweating, quick, shallow breathing, rapid heart rate, and muscle tremors are also noticed.

Some drugs are not allowed in competition and may need to be withheld a few days before. The best approach is to measure whole blood selenium and serum vitamin E to determine if a horse is deficient and then to design supplementation based on those levels. By determining the underlying form of ER that a horse is suffering from, specific management strategies can be employed to control symptoms.

In some cases, deficiencies of vitamins, minerals or electrolytes may cause sings of muscle pain equone stiffness in horses. If the damage is severe, you may notice that the horse’s muscle mass decreases in size as the body removes the damaged proteins.


Training, riding, driving, longeingor turnout are all suitable. One way to lower serum CK after exercise when a high caloric intake is required is to feed a low-starch, euine ration. If stiffness is present, stop there, if not continue after a 2 minutes walk. Support the College of Veterinary Medicine.

Episodes of ER vary from subclinical to severe in which massive muscle necrosis and renal failure from myoglobinuria occurs. The muscle mass usually returns within two to four months.

Equine rhabdomyolysis.

Integrative Medicine Acupuncture Expand. Muscle has a remarkable ability to repair equinee. More information about selecting the correct Vitamin E supplement can be found here. In addition, new knowledge regarding effective management of horses with exertional rhabdomyolysis, particularly with regard to diet, has significantly reduced the severity ER in many horses.

Animal and vegetable-based fats are the major sources of fat available for equine consumption. It is likely that several factors must act together in order to cause an ER attack. Comparative Medicine and Integrative Biology. Carbohydrates in equine nutrition. Interestingly, if horses that experience RER can race, there is no difference between their performances and those of matched control horses. Blood tests should reveal that the horse’s CPK concentration and AST levels are normal before the horse is returned to work.

If possible, avoid breaks in the horse’s exercise schedule. Accumulation of polysaccharide in muscle cells occurs gradually over time and may not be apparent until 2 yrs of age even though rhabdomyolysis may occur in young foals. J Am Rjabdomyolysis Med Assoc. Although draft horses may have severe signs of exertional rhabdomyolysis, many draft horses with PSSM often have normal serum creatine kinase and exhibit loss of muscle mass, recumbency and weakness.


Lactate naturally builds up in an exercising horse without harming the muscle cells, and is metabolized within an hour afterward. Fluids will increase the production of urine that will in turn help flush out the excess, and potentially damaging, myoglobin from the kidneys and will reduce NSAID-produced kidney damage. McPhail Dressage Chair Expand. Stall confinement should be kept to less than 24 hours if possible.

Giving Back with Passion: Proper conditioning is rhabcomyolysis important in preventing ER. Clinical Trials and Research. Veterinary Scholars Admissions Pathway Expand. Clinical signs of exertional rhabdomyolysis usually occur shortly after the beginning of exercise.

CVM Accident Incident information. Rice bran or oil can be gradually introduced into the diet.

Except to get a horse to his stall, a horse showing signs of severe ER should not be moved until he is comfortable enough to do so eagerly. A Standardbred trotter lies sternal in his stall and is reluctant to rise. Become a Canine Donor. Diet manipulation is becoming the method of choice in controlling RER, particularly in equine athletes that are closely monitored for pharmacological substances.

Committee on Diversity and Inclusion.

Epidemiological factors influencing exertional rhabdomyolysis in Thoroughbred racehorses. If the horse shows any signs of persistent muscle stiffness, the test should stop.