title: Absence of Mycoplasma bovis in unprocessed frozen bull semen from Canadian artificial insemination centres.
abstract: From 1979 to 1984 approximately 2950 unprocessed frozen semen samples from nine Canadian artificial insemination centres were cultured for Mycoplasma bovis. M bovis was not detected in any of them.
mesh_terms: D000818:Animals; D002170:Canada; D002417:Cattle; D005615:Freezing; D007315:Insemination, Artificial / Q000662:veterinary*; D008297:Male; D009174:Mycoplasma / Q000302:isolation & purification*; D012661:Semen / Q000382:microbiology*; D012662:Semen Preservation / Q000662:veterinary*