Tatsuji Mizutani   Shiho Sumigama   Keiichi Nagakubo   Noriko Shimizu   Hiromichi Oba   Tatsuya Hori   Toshihiko Tsutsui   
JOURNAL OF VETERINARY MEDICAL SCIENCE 72(1) 23-27 2010年1月 [査読有り]
It has been shown that addition of the surfactant Orvus ES paste (OEP) and its main component sodium lauryl sulfate (SLS) to boar or dog semen before freezing improves post-thaw sperm motility and protects acrosome caps. In this study, we investig...
Eiichi Kawakami   Tatsuya Hori   Toshihiko Tsutsui   
JOURNAL OF VETERINARY MEDICAL SCIENCE 71(10) 1373-1375 2009年10月 [査読有り]
A Beagle with a low plasma testosterone (T) level and azoospermia was given 10 Subcutaneous injections of 1 mu g gonadotropin-releasing hormone analogue (GnRH-A) per head at intervals of 3 days (Experiment 1), and 6 months after the final injectio...
T. Tsutsui   F. Takahashi   T. Hori   E. Kawakami   P. W. Concannon   
REPRODUCTION IN DOMESTIC ANIMALS 44 230-233 2009年7月 [査読有り]
The fertile period for natural mating in dogs extends from before ovulation until day 5 post ovulation (PO) and involves a delay in oocyte maturation until 2-3 days PO and viability of secondary oocytes for 48-60 h or more. Spermatozoa do not ente...
T. Tsutsui   Y. Suzuki   M. Toyonaga   H. Oba   T. Mizutani   T. Hori   
REPRODUCTION IN DOMESTIC ANIMALS 44 120-124 2009年7月 [査読有り]
Plasma progesterone (P(4)) concentrations are maintained in pregnant cats until parturition, but become low in pseudopregnant cats 40-45 days after infertile mating. This difference in P(4) concentrations is considered to be due to P(4) secretion ...
T. Tsutsui   F. Onodera   H. Oba   T. Mizutani   T. Hori   
REPRODUCTION IN DOMESTIC ANIMALS 44 291-293 2009年7月 [査読有り]
Contents Female cats are known to be seasonal breeders and male cats annual breeders. Despite this, there are limited data on the influence of breeding season (BS) on hormone concentration and semen quality in the male cat. This study compared pla...