Considering the importance of sheep, economically and in research, it is necessary to explain what normal sheep electrocardiogram values are, and the factors that can cause variations in ECG parameters. The present study, therefore, sought to verify the differences that exist in ECG time scaling between different sub-groupings of sheep. To achieve this, 60 normal sheep were evaluated for the ECG. We reported that at normal ranges of electrolytes and ECG intervals/durations, with mean weights: Ouda = 41.6 ± 7.2 kg (27.8 – 54.0 kg), Balami = 33.2 ± 6.4 kg (22.2 – 43.5 kg); the ewes showed significantly long timing of ECG waves than the rams (P
Key words: ECG, Ouda, Balami, Ram, Ewe, Lamb, Serum electrolytes, Physical Activity, Management system
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