WEKO3
アイテム
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Changes in Follicular Vascularity during the First Follicular Wave in Lactating Cows
名前 / ファイル | ライセンス | アクション |
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changesin.pdf (1.3 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||||||||||
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公開日 | 2011-06-29 | |||||||||||||
タイトル | ||||||||||||||
言語 | en | |||||||||||||
タイトル | Changes in Follicular Vascularity during the First Follicular Wave in Lactating Cows | |||||||||||||
言語 | ||||||||||||||
言語 | eng | |||||||||||||
キーワード | ||||||||||||||
言語 | en | |||||||||||||
主題Scheme | Other | |||||||||||||
主題 | Blood flow | |||||||||||||
キーワード | ||||||||||||||
言語 | en | |||||||||||||
主題Scheme | Other | |||||||||||||
主題 | Follicular wave | |||||||||||||
キーワード | ||||||||||||||
言語 | en | |||||||||||||
主題Scheme | Other | |||||||||||||
主題 | Selection | |||||||||||||
キーワード | ||||||||||||||
言語 | en | |||||||||||||
主題Scheme | Other | |||||||||||||
主題 | Deviation | |||||||||||||
キーワード | ||||||||||||||
言語 | en | |||||||||||||
主題Scheme | Other | |||||||||||||
主題 | Cow | |||||||||||||
資源タイプ | ||||||||||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||||||||
資源タイプ | journal article | |||||||||||||
著者 |
Acosta, Tomas J.
× Acosta, Tomas J.
WEKO
334
× Hayashi, Ken-go× 松井, 基純
WEKO
132
× Miyamoto, Akio
WEKO
151
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抄録 | ||||||||||||||
内容記述タイプ | Abstract | |||||||||||||
内容記述 | Increase in the blood supply to individual follicles appears to be associated with follicular growth rates and the ability to become the dominant follicle, while reduced thecal vascularity appears to be closely associated with follicular atresia. Therefore, this study aimed to determine the real-time changes in the vascularity of the follicle wall during the first follicular wave in cycling Holstein cows. Normally cycling and lactating cows (n=5) were examined by transrectal color Doppler ultrasonography (the sensitivity for velocity: > 2 mm/sec) to determine the changes in the vasculature of the follicle wall (presence or absence of blood flow) and the diameter of follicles. A new follicular wave and ovulation were induced by GnRH injection at 48 h after an injection of PGF2α analogue. The ovaries were scanned daily for 7 days after GnRH injection. Follicles >2.5 mm were classified into 3 groups by the changes in diameter as follows: 1) largest follicle, 2) second largest follicle, and 3) small follicles, which included all other follicles >2.5 mm. Before the follicle selection, there was no significant difference in the percentage of follicles with detectable blood flow between the subsequently determined largest and second largest follicles. After the follicle selection, the percentage of follicles with detectable blood flow significantly decreased among the second largest follicles. In addition, small follicles with detectable blood flow kept larger diameters than those without detectable blood flow from one day before the occurrence of follicle selection. It is likely that maintenance of follicle vasculature and appropriate blood supply to the larger follicles is essential for follicle dominance. In small follicles, the presence of blood flow within the wall also appears to be required for recruitment. Consequently, the data suggest that the change of the blood supply to an individual follicle closely relates to the dynamics of follicular growth in the first follicular wave in the cow. | |||||||||||||
言語 | en | |||||||||||||
書誌情報 |
en : Journal of Reproduction and Development 巻 51, 号 2, p. 273-280, 発行日 2005 |
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出版者 | ||||||||||||||
言語 | en | |||||||||||||
出版者 | Japanese Society of Animal Reproduction | |||||||||||||
ISSN | ||||||||||||||
収録物識別子タイプ | PISSN | |||||||||||||
収録物識別子 | 09168818 | |||||||||||||
書誌レコードID | ||||||||||||||
収録物識別子タイプ | NCID | |||||||||||||
収録物識別子 | AA10936678 | |||||||||||||
DOI | ||||||||||||||
関連タイプ | isIdenticalTo | |||||||||||||
識別子タイプ | DOI | |||||||||||||
関連識別子 | info:doi/10.1262/jrd.16092 | |||||||||||||
権利 | ||||||||||||||
言語 | en | |||||||||||||
権利情報 | Japanese Society of Animal Reproduction | |||||||||||||
フォーマット | ||||||||||||||
内容記述タイプ | Other | |||||||||||||
内容記述 | application/pdf | |||||||||||||
著者版フラグ | ||||||||||||||
出版タイプ | VoR | |||||||||||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 |