Observation on Spontaneously Occurring Arrhythmias in Racing Pigeons and Feral Pigeons.

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  • KOBAYASHI Masayuki
    Department of Veterinary Pathology, Faculty of Agriculture, Tokyo University of Agriculture and Technology
  • KASHIDA Yoko
    Department of Veterinary Pathology, Faculty of Agriculture, Tokyo University of Agriculture and Technology Drug Safety Research Center, Developmental Research Laboratories, Daiichi Pharmaceutical Co., Ltd.
  • MACHIDA Noboru
    Department of Veterinary Pathology, Faculty of Agriculture, Tokyo University of Agriculture and Technology
  • KIRYU Keiji
    Department of Veterinary Pathology, Faculty of Agriculture, Tokyo University of Agriculture and Technology

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  • レースバトとドバトにおける不整脈の観察
  • レースバト ト ドバト ニ オケル フセイミャク ノ カンサツ

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In order to examine the spontaneous occurrence of arrhythmias in 2 groups consisting of 18 racing pigeons and 48 feral pigeons, electrocardiograms using standard bipolar limb leads ( I, II and III) were recorded in both the groups of pigeons at rest. The racing pigeons showed a significantly higher incidence of arrhythmias than the feral pigeons (racing=100% ; feral=50.0% ; p<0.001). The incidence of every one of such arrhythmias in the racing, revealed sinus arrhythmia (SA) in 18 (100%), sinoatrial block or sinus arrest (SAB/SAT) in 11 (61.1%), second-degree atrioventricular block (2°AVB) Mobitz type I (Wenckebach type) in 6 (33.3%), and ventricular premature contraction in 3 (16.7%). The feral revealed SA in 12 (25.0%), SAB/SAT in 12 (25.0%), and 2°AVB Mobitz type I in 1 (2.1%) and Mobitz type II in 4 (8.3%). The present results showing differences of incidence of arrhythmias in the 2 groups of pigeons, suggest that the racing pigeon may be not only a relevant animal for studying arrhythmias related to the athletic heart but may be useful in correspondence with equine cardiology.

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