ELECTROCARDIOGRAPHIC PARAMETERS IN NEW - BORN CALVES

161 new - born calves with ages between 1 hour-3-4 weeks have been investigated. The calves, both males 54,79% and females 45,20% - were clinically healthy. The examination was realized in standing position and the ECG parameters were: a milivolte amplitude of 10 mm, a rate of ECG tract rolling of 25 mm/sec, unipolar and bipolar legs derivations. The length of ECG component parts (sec): P wave = 0,056±0,001; P-R interval = 0,125±0,002; QRS complex = 0,046±0,08; QT interval = 0,250±0,004; T wave = 0,079±0,001; R-R interval = 0,533±0,012; P-T interval = 0,376±0,005; T-P segment = 0,151±0,008 and cardiac frequency electrocardiographically calculated based on R-R interval was 120,7±2,58. The amplitude of ECG waves in new born calves in D2 derivation is: P wave=0,159±0,07 mV; ventricular complex = 0,893±0,033 mV; T wave = 0,405±0,019 mV. The values of electric axes are: P wave = 45,71±3,028°; ventricular complex = -74,79±5,34° and T wave= 62,34±5,11°. Our conclusions were: estimation of ECG values in new born calves is very useful, considering the diverse pathology in this specie at this specific age: cardiomyopathies consecutive to a selenium deficiency, congenital heart malformations and others