title: Comparison of fertility on intrauterine insemination between cryopreserved ejaculated and cauda epididymal sperm in dogs.
abstract: The fertility was compared between ejaculated and cauda epididymal sperm sensitized with prostatic fluid in dog after freeze-thawing using the fertility of ova from the contralateral ovary after injection (2 × 10(8) sperm) into dog uterus on the unilateral ovariectomized side, on the basis of the presence or absence of conception. No significant difference was observed in sperm quality after freeze-thawing between the two groups and conception rates were equivalent and low. Therefore, to achieve a high fertility by intrauterine insemination of canine frozen-thawed ejaculated and cauda epididymal sperm, intrauterine insemination on both sides is recommended, rather than insemination with a lot of sperm of the uterine horn on one side.
authors.affiliation: Department of Reproduction, Nippon Veterinary and Life Science University, Musashino-shi, Tokyo 180–8602, Japan. t-hori@nvlu.ac.jp
authors.forename: Tatsuya
authors.initials: T
authors.lastname: Hori
authors.forename: Yasuyoshi
authors.initials: Y
authors.lastname: Matsuda
authors.forename: Masanori
authors.initials: M
authors.lastname: Kobayashi
authors.forename: Eiichi
authors.initials: E
authors.lastname: Kawakami
authors.forename: Toshihiko
authors.initials: T
authors.lastname: Tsutsui
mesh_terms: D000818:Animals; D015925:Cryopreservation / Q000662:veterinary*; D004285:Dogs; D004542:Ejaculation; D004822:Epididymis / Q000502:physiology*; D005260:Female; D007315:Insemination, Artificial / Q000379:methods / Q000662:veterinary*; D008297:Male; D011247:Pregnancy; D012662:Semen Preservation / Q000662:veterinary*; D013081:Sperm Motility; D013094:Spermatozoa / Q000145:classification / Q000502:physiology*; D014599:Uterus