Ultrasonographic Observation of Individual Follicular Development in Japanese Black Cows Superovulated with FSH
スポンサーリンク
概要
- 論文の詳細を見る
In order to clarify the individual follicular development during superovulation treatment in Japanese black cows, consecutive ultrasonography was performed. A total of 5 cows was superovulated in mid-luteal phase. Ovaries were monitored with ultrasonography at 12 h intervals from the initial FSH injection (=0 h) until 24 h after the first ovulations. All follicles more than 5 mm in diameter were determined in freezing ultrasonography images with built-in calipers. Blood samples were collected at 12 h intervals for 168 h and the concentrations of progesterone and estradiol-17β were determined. Few follicles more than 5 mm in diameter emerged at 12 h after FSH injection, but most follicles more than 5 mm in diameter emerged at 36 h. Then, these emergence tended to decrease gradually. Every ovulatory follicles were retrospectively identified more than 5 mm in diameter at 84 h. The follicles that emerged later tended to grow faster than those emerged earlier within 84 h after treatment. The progesterone profile after prostaglandin F2α (PG) injection in superovulated cows was similar to those in normal cycling cows synchronized with PG. The estradiol-17β profile showed a slight increase between 0 and 72 h during the follicular growth, then the levels reached peaks in accordance with estrous behavior prior to a sharp decrease before ovulation.
- 日本繁殖生物学会の論文
- 1998-08-01
著者
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HAMANA Katsumi
Department of Veterinary Medicine, Faculty of Agriculture, Kagoshima University
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Hamana Katsumi
Department Of Veterinary Medicine Faculty Of Agriculture Kagoshima University
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Kamimura Shunichi
Department Of Veterinary Medicine Faculty Of Agriculture Kagoshima University
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USHINOHAMA Kanji
Department of Veterinary Medicine, Faculty of Agriculture, Kagoshima University
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Ushinohama Kanji
Department Of Veterinary Medicine Faculty Of Agriculture Kagoshima University
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Kamimura Shunji
Department of Veterinary Medicine, Faculty of Agriculture, Kagoshima University
関連論文
- Ultrasonic Diagnosis of Bovine Fetal Sex by the Relative Location of the Genital Tubercle in Early Pregnancy
- Turnover of Ovulatory and Non-Ovulatory Dominant Follicles in Postpartum Japanese Black Cows
- Relationship Between the Peripheral Concentrations of Estradiol-17β (E_2) and Preovulatory Characteristics of Cumulus-oocyte Complexes (COCs) During Superovulation Treatment in Japanese Black Cows
- Ultrasonographic Observation of Individual Follicular Development in Japanese Black Cows Superovulated with FSH