Electrocardiographic studies in holstein crossbred calves

The study was undertaken to evaluate the base line data to compare changes in electrocardiographic indices for detecting arrhythmias and conduction abnormalities in ruminants. The evaluation was undertaken in Holstein crossbred calves employing base-apex lead system which revealed mean values of heart rate, ‘P’ amplitude, ‘P’ durations’ P-R’ interval, ‘QRS’ amplitude, ‘QRS’ duration, ‘S-T'segments, ‘T’ amplitude, ‘T’ duration and ‘Q-T’ interval as 85.2±4.23 bpm, 0.234 ± 0.031 mV, 0.05 ± 0.0024 sec, 0.125 ± 0.025 sec, 0.884 ± 0.06 mV, 0.054 ± 0.0001 sec, 0.182 ± 0.038 sec, 0.318 ± 0.088 mV, 0.069 ± 0.0037 sec and 0.308 ± 0.0017 sec respectively.