Abstract
The equestrian industry is a strong segment of Brazilian agribusiness. The Quarter Horse (QH) stands out as one of the main breeds of sport horses in Brazil and may have its athletic performance affected by genetic muscle diseases, such as: hyperkalaemic periodic paralysis (HYPP), type 1 polysaccharide storage myopathy (PSSM1), malignant hyperthermia (MH), and myosin heavy chain myopathy …