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OJVRTM
Online Journal of Veterinary Research©
Volume 11 (2):62-66, 2007
Auscultatory findings of cardiac murmurs in clinically healthy
dairy cattle
Rezakhani A, Zarifi
M.
Department of Clinical Studies,
ABSTRACT
Rezakhani A,
Zarifi M., Auscultatory findings of cardiac murmurs in clinically
healthy dairy cattle, Online J Vet Res, 11 (2) 62-66,
2007. Three hundred clinically healthy Holstein
cattle aged 1-12 months, 12-36 months and >36 months were auscultated on both sides of the cardiac area of the chest
and on mitral, aortic, pulmonary and tricuspid valve
areas by two clinicians with a Littman type stethoscope and sensor stethoscope
(meditron). The prevalence
of heart murmurs was 47.7%; diastolic murmurs 11.2% and systolic murmurs 88.8%.
The timing of 94.4% of murmurs was in early to early to mid and the intensity
of 93% was grade 1/5 to grade 3/5. The PMI of 52.4%, 8.4%, 17.5% and 21.7% was
heard over the pulmonic, aortic, mitral
and tricuspid valves, respectively. This study showed that cardiac murmurs in
clinically healthy dairy cattle are common and the majority
are functional.
Key words: cattle, cardiac, murmurs, heart