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Cardiac Muscle Mass Distribution in the Domestic Turkey and Relationship to Electrocardiogram

M. Boulianne, D. B. Hunter, R. J. Julian, M. R. O'Grady and P. W. Physick-Sheard
Avian Diseases
Vol. 36, No. 3 (Jul. - Sep., 1992), pp. 582-589
DOI: 10.2307/1591752
Stable URL: http://www.jstor.org/stable/1591752
Page Count: 8
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Cardiac Muscle Mass Distribution in the Domestic Turkey and Relationship to Electrocardiogram
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Abstract

Ventricular weights were measured in 20-week-old male and female heavy turkeys, and electrocardiograms (ECGs) were recorded in 10- and 20-week-old male and female heavy turkeys. Twenty-week-old males had heavier relative left ventricular and total ventricular weights than females of the same age. Left-to-right ventricular weight ratios were 4.4:1 in males and 4.5:1 in females. Heart rate was faster in young birds and in females, and that influenced the duration of the intervals of the ECG. Wave amplitudes were smaller in 10-week-old turkeys than in 20-week-old turkeys. There was no correlation between electrocardiographic parameters and ventricular weights of male and female turkeys. Two-dimensional ECGs were therefore found to be of minimal value for detecting turkeys with heavier ventricles. /// Se tomaron los pesos de los ventrículos de pavos de engorde machos y hembras de 20 semanas de edad y se registraron los electrocardiogramas de pavos de engorde machos y hembras de 10 y 20 semanas de edad. Los machos de 20 semanas tenían el ventrículo izquierdo más pesado y el peso ventricular total más alto que el de las hembras de la misma edad. La proporción del peso del ventrículo izquierdo y derecho fue de 4.4:1 en machos y de 4.5:1 en hembras. El ritmo cardíaco fue más rápido en aves jóvenes y en hembras e influenció los intervalos del electrocardiograma. Las amplitudes de onda fueron más pequeñas en pavos de 10 semanas que en pavos de 20 semanas de edad. No hubo correlación entre los parámetros electrocardiográficos y los pesos ventriculares de los pavos machos y hembras. Por lo tanto, se encontró que los electrocardiogramas en dos dimensiones tienen un valor mínimo para detectar los pavos con los ventrículos más pesados.

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