Electroejaculation of bulls using pulse waves of variable frequency and length.
D000818:Animals; D002417:Cattle / Q000502:physiology*; D004542:Ejaculation; D004558:Electric Stimulation / Q000379:methods*; D004581:Electronics; D006863:Hydrogen-Ion Concentration; D008297:Male; D012661:Semen / Q000166:cytology; D013048:Specimen Handling / Q000295:instrumentation / Q000662:veterinary; D013094:Spermatozoa / Q000166:cytology