DOI: 10.36871/vet.zoo.bio.202012008
UDC 636.1: 612
Authors
N. E. Orlova
Candidate of Veterinary Sciences, Associate Professor of the Department
of Physiology, Pharmacology and Toxicology named after A. N. Golikov
and I. E. Mozgov, Moscow State Academy of Veterinary Medicine and Biotechnology – MVA by K. I. Skryabin,
Moscow, Russian Federation
M. E. Ponomareva
Candidate of Veterinary Sciences, Associate Professor of Department
of Special Animal Husbandry, Selection and Animal Breeding,
Stavropol State Agrarian University,
Stavropol, Russian Federation
S. A. Pozov
Doctor of Veterinary Sciences, Professor of the Department of Therapy
and Pharmacology, Stavropol State Agrarian University,
Stavropol, Russian Federation
Abstract
Analysis of the dynamics of electrocardiographic parameters in healthy jumping horses and
horses with CVS pathologies in training showed that healthy horses reacted to physical activity
by intensifying the processes of depolarization (an increase in the R wave voltage by 4%) and
repolarization (an increase in the T wave voltage by 27%) in conduction system of the heart (in the
second standard lead), and, consequently, an increase in ventricular systole. In sick animals, the
reaction to physical activity is the opposite: a weakening of the processes of depolarization (a decrease
in the voltage of the R wave by 27,8%) and repolarization (a decrease in the voltage of the
T wave by 12,5%) in the cardiac conduction system (according to the second standard lead), which
indicates a weakening of the systole of the ventricles. Such a response to physical activity can serve
as one of the criteria for assessing the state of the cardiovascular system of jumping horses and be
a prerequisite for a deeper cardiological diagnosis.
Keywords
show jumping horse, physical activity, cardiology, electrocardiography.
