BHV-1, Stenotrophomonas maltophilia, Fertilization, Semen, Cryopreservation, Liquid nitrogen, BVDV, Embryos, Contamination, Sperm Motility, Embryo, Mammalian - microbiology, Tissue Banks, Animals, Semen - microbiology, Cattle, Herpesvirus 1, Bovine - isolation & purification, Equipment Contamination, Stenotrophomonas maltophilia - isolation & purification, N...