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Eletrocardiographic study in horses of the Mangalarga Marchador breed

For the electrocardiographic evaluation of Mangalarga Marchador breed horses, 60 electrocardiograms were recorded from clinically healthy equines aging from one to 28-year-old, being 39 females and 21 males. The heart rate tended to decrease with age and the amplitude of P wave increased with the growth of the animals. The duration of the QRS complex and the amplitude of S wave were greater in males than in females.

horse; electrocardiogram; Mangalarga Marchador breed

Universidade Federal de Minas Gerais, Escola de Veterinária Caixa Postal 567, 30123-970 Belo Horizonte MG - Brazil, Tel.: (55 31) 3409-2041, Tel.: (55 31) 3409-2042 - Belo Horizonte - MG - Brazil