[Comparative electromyographic studies of calves, sheep and goats]

Electromyography was used on calves, sheep, and goats to study limit values and behaviours of the action potentials of motoric units of M. Flexor digitorum superficialis. Average potentials were 10.5 ms in calf, 8.2 ms in sheep, and 8.1 ms in goat, and peak potentials were 4.8 ms, 5.7 ms, and 6.3 ms. Roughly 85 per cent of the potentials were diphasic and triphasic in calf, 92 per cent in sheep, and 93 per cent in goat. Monophasic, tetraphasic, and polyphasic action potentials were also exhibited by motoric units. Average potential amplitudes were 377 microV in calf, 253 microV in sheep, and 322 microV in goat.