PMID: 3214367Nov 1, 1988Paper

Cardiomyopathy and woolly haircoat syndrome of Poll Hereford cattle: electrocardiographic findings in affected and unaffected calves

Australian Veterinary Journal
R J Whittington, R W Cook

Abstract

Electrocardiograms were recorded from 4 calves with cardiomyopathy and woolly haircoat syndrome (CWH), a lethal autosomal recessive trait of Poll Hereford cattle and from 9 unaffected calves. Electrocardiograms of calves with CWH were characterised by multifocal ventricular premature contractions which occurred singly, in pairs, in runs and as episodes of ventricular tachycardia. Bigeminal rhythms were recorded occasionally. The frequency of ventricular premature contractions ranged from 5 to 120.min-1. Ventricular premature contractions in calves with CWH were attributed to myocardial degeneration and fibrosis which were observed grossly and microscopically. Electrocardiograms in unaffected calves were characterised by normal sinus rhythm and by variation in the morphology of wave forms between animals. The durations of the various wave forms were less than those previously recorded from adult cattle.

References

Sep 21, 1985·The Veterinary Record·C J Morrow, S McOrist

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Citations

Mar 1, 1991·Australian Veterinary Journal·G J StorieJ D Taylor
Feb 19, 2015·Proceedings of the National Academy of Sciences of the United States of America·Mario NotariXin Lu
Jun 24, 2004·Cardiovascular Pathology : the Official Journal of the Society for Cardiovascular Pathology·Nikos Protonotarios, Adalena Tsatsopoulou
Jan 21, 2018·Cell Death and Differentiation·Zinaida DedeićXin Lu
Jul 16, 2020·Clinical Genetics·H K RobinsonS Ellard
Nov 1, 2020·Acta Biochimica Et Biophysica Sinica·Timur YagudinZhenwei Pan

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