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J Equine Vet Sci ; 136: 105052, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38531516

RESUMO

Quarter horses (QH), a prominent athletic breed in Brazil, are affected by muscular genetic disorders such as myosin-heavy chain myopathy (MYHM), polysaccharide storage myopathy (PSSM1), hyperkalemic periodic paralysis (HyPP), and malignant hyperthermia (MH). Bull-catching (vaquejada), primarily involving QH, is a significant equestrian sport in Brazil. Since the allele frequencies (AF) of MYHM, PSSM1, HyPP, and MH in vaquejada QH remain unknown, this study evaluated the AF in 129 QH vaquejada athletes, specifically from the Brazilian Northeast. These variants were exclusively observed in heterozygosity. The MYHM exhibited the highest AF (0.04 ±0.01), followed by PSSM1 (0.01 ±0.01) and the HyPP variant (0.004 ±0.01), while the MH variant was not identified in this study. This study represents the first identification of these variants in vaquejada QH, emphasizing the need to implement measures to prevent the transmission of pathogenic alleles and reduce the occurrence of clinical cases of these genetic diseases.


Assuntos
Frequência do Gene , Doenças dos Cavalos , Cavalos , Doenças Musculares , Doenças Musculares/congênito , Doenças Musculares/genética , Doenças Musculares/veterinária , Animais , Cavalos/genética , Doenças dos Cavalos/genética , Masculino , Feminino , Brasil , Paralisia Periódica Hiperpotassêmica/genética , Paralisia Periódica Hiperpotassêmica/veterinária , Hipertermia Maligna/genética , Hipertermia Maligna/veterinária , Polissacarídeos/metabolismo , Testes Genéticos
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