Abstract
Abstract. The purpose of the study is to study the state of the cardiovascular system of calves in scar acidosis. In order to simulate metabolic disorders, crushed barley was injected into the rumen cavity through the fistula at a dose of 10.0-21.0 g/kg of animal body weight, which led to deep biochemical disorders of scar digestion with a pronounced clinical picture of acute rumen acidosis, and after 3.5-4.0 hours - metabolic acidosis. Metabolic acidosis leads to disruption of the functions of all systems, including changes in cardiovascular ac- tivity, which were recorded by clinical examination, electrocardiography, as well as clinical and biochemical blood analysis. As a result, changes in the work of the cardiovascular sys- tem were established, characterized by pronounced ventricular arrhythmia, a decrease in the minute volume of blood ejected by the heart, a violation of the function of automatism, conduction and contractility of the heart muscle.
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