EN
The aim of this paper was to define and compare the parameters of aciol-base balance /ABB/ in healthy calves and in calves with clinical symptoms of pneumopathy as well as in convalescents kept in controlled environmental conditions. Three groups of calves were examined. Group I consisted of 18 healthy calves; group II - 23 calves with clinical symptoms of pneumonia; group III - 23 calves past diseased treated as cured. The examination of ABB parameters was performed by Astrup's method using Corning 168 apparatus. The following parameters were determined: pH of blood, pCO², HCO⁻₃ actual, HCO⁻₃ standard, BE. The conditions of temperature, humidity and CO₂ and NH₃ concentration were controlled. Statistically significant lower pH of blood and higher pCO₂ and HCO⁻₃ concentration were found in sick calves in comparison with healthy ones and past diseased calves. Functional disturbances of respiratory system still occurred what resulted in respiratory acidosis. The ABB parameters were close to the values stated in calves suffering from pneumonia.