Relationship between the responsiveness to multiple-ovulation treatment and the number of bovine oocytes collected by transvaginal follicle aspiration.
To characterize factors affecting the number of bovine oocytes recovered transvaginally, a regression analysis was performed between the responsiveness to multiple-ovulation treatment and the number of oocytes recovered transvaginally. The number of embryos recovered following multiple-ovulation treatment and the number of oocytes recovered transvaginally increased when the number of follicles to be aspirated transvaginally increased (P<0.05. P<0.01). The number of cumulus-oocyte complexes recovered transvaginally also increased when the number of oocytes to be aspirated transvaginally increased (P<0.001). However, the number of viable embryos that recovered following multiple-ovulation treatment had no relation to the number of cumulus-oocyte complexes recovered transvaginally. These results suggested that more oocytes can be recovered from donors that have a high responsiveness to multiple-ovulation treatment.
Hashimoto
S
S
Embryo Transplantation Laboratory, Snow Brand Milk Products Co., Ltd., Tomakomai, Hokkaido, Japan.
Takakura
R
R
Yoshinari
M
M
Minam
N
N
Yamada
M
M
Imai
H
H
Kashim
N
N
D000818:Animals; D002417:Cattle / Q000196:embryology / Q000502:physiology*; D003008:Cloprostenol / Q000008:administration & dosage; D015237:Dinoprost / Q000008:administration & dosage; D005260:Female; D005640:Follicle Stimulating Hormone / Q000008:administration & dosage; D007315:Insemination, Artificial / Q000662:veterinary*; D009865:Oocytes / Q000502:physiology*; D006080:Ovarian Follicle / Q000502:physiology*; D010062:Ovulation Induction / Q000706:statistics & numerical data / Q000662:veterinary*; D010120:Oxytocics / Q000008:administration & dosage; D012044:Regression Analysis
D010120:Oxytocics; D003008:Cloprostenol; D005640:Follicle Stimulating Hormone; D015237:Dinoprost