Electrocardiogram of Miniature “Shiba” Goats

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  • SUDO Yuji
    <I>Laboratory of Animal Management and Hygiene, Faculty of Agriculture, University of Tokyo</I>
  • SUGANO Shigeru
    <I>Laboratory of Animal Management and Hygiene, Faculty of Agriculture, University of Tokyo</I>
  • MORI Yuji
    <I>Stock Farm, Faculty of Agriculture, University of Tokyo</I>
  • HIROSE Hisashi
    <I>Laboratory of Animal Management and Hygiene, Faculty of Agriculture, University of Tokyo</I>
  • KANO Yasuhiko
    <I>Stock Farm, Faculty of Agriculture, University of Tokyo</I>
  • SAWASAKI Toru
    <I>Stock Farm, Faculty of Agriculture, University of Tokyo</I>
  • SAWAZAKI Hiroshi
    <I>Laboratory of Animal Management and Hygiene, Faculty of Agriculture, University of Tokyo</I>

Bibliographic Information

Other Title
  • 小型ヤギいわゆるシバヤギの心電図
  • コガタ ヤギ イワユル シバヤギ ノ シンデンズ
  • Electrocardiogram of Miniature &ldquo;Shiba&rdquo; Goats

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Description

Electrocardiographical characteristics in A-B lead and limb leads were investigated in 49 Shiba goats of both sexes aging 1 to 49 months bred in Stock Farm of Tokyo University. Vectorcardiograms in the heart-orthogonal lead system were also recorded in 4 goats. The results obtained are summarized as follows : 1) ECG in A-B lead along the longitudinal heart axis appeared in the positive P and T waves and the rS or QS type of the QRS complex, and the patterns were much similar to those of a sheep. 2) The ECG patterns in limb leads showed a considerable variation, showing remarkably varied the mean electrical heart axes calculated from standard limb lead I and III. 3) With age in month were observed a prolongation in RR interval and a reduction in the amplitude of S wave in A-B lead. 4) From the vectorcardiograms, the excitation in the ventricles was presumed to be directed from the apex to the heart base.

Journal

  • Experimental Animals

    Experimental Animals 28 (3), 381-391, 1979

    Japanese Association for Laboratory Animal Science

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