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Semen was collected from 8 drakes of the Osaka or Japanese Improved Breed by electro-ejaculation. One electrode was placed on the skin in the sacral region and the other inserted into the vent. An alternating current of 30 volts and 0. 06-0. 08 amps, was applied 3-5 times at intervals of 5 sees,...

Journal of the Faculty of Fisheries and Animal Husbandry, Hiroshima University, 1957, 1, pp 363-371