Relationship between the responsiveness to multiple-ovulation treatment and the number of bovine oocytes collected by transvaginal follicle aspiration |
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| Authors: | Hashimoto S Takakura R Yoshinari M Minam N Yamada M Imai H Kashim N |
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| Institution: | Embryo Transplantation Laboratory, Snow Brand Milk Products Co., Ltd., Tomakomai, Hokkaido, Japan. |
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| Abstract: | 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. |
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