STATE OF ACID-BASE BALANCE IN COWS DEPENDING ON THEIR PHYSIOLOGICAL CONDITION AND MOTOR ACTIVITY

Hristo Hristev, R. Ivanova, Zhivka Gergovska

Abstract: We studied acid-base homeostasis in cows at different physiological states and physical activity. We monitored the changes in Hв, standard bicarbonate (SBE), pH, rСO2 and Hb saturation of oxygen (SAT). It was found that the content of hemoglobin in pregnant cows is lower than that of non-pregnant ones. Physical activity of the animals (up to 4 km) does not always lead to an increase in Hb. Increased physical activity invariably increases blood pH while the physiological state does not have an influence on blood pH. Cows in different physiological conditions, such as increased physical stress, develop primary metabolic acidosis followed by hyperventilation (secondary respiratory alkalosis).

Keywords: cows; Hb; Hb saturation with O2; pH; physical activity; rCO2

Date published: 2019-03-21