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Validation of a novel timed artificial insemination protocol in beef cows with a functional corpus luteum detected by ultrasonography
http://hdl.handle.net/10458/0002000419
http://hdl.handle.net/10458/0002000419ea77f4e2-d5d5-4b4a-acc6-267e50136526
| 名前 / ファイル | ライセンス | アクション |
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article (748 KB)
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| アイテムタイプ | 学術雑誌論文 / Journal Article(1) | |||||||||||||||||
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| 公開日 | 2023-12-27 | |||||||||||||||||
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| タイトル | Validation of a novel timed artificial insemination protocol in beef cows with a functional corpus luteum detected by ultrasonography | |||||||||||||||||
| 言語 | en | |||||||||||||||||
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| 言語 | eng | |||||||||||||||||
| キーワード | ||||||||||||||||||
| 言語 | en | |||||||||||||||||
| キーワード | Beef cows | |||||||||||||||||
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| 言語 | en | |||||||||||||||||
| キーワード | Corpus luteum | |||||||||||||||||
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| 言語 | en | |||||||||||||||||
| キーワード | ShortSynch | |||||||||||||||||
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| 言語 | en | |||||||||||||||||
| キーワード | Timed AI protocol | |||||||||||||||||
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| 言語 | en | |||||||||||||||||
| キーワード | Ultrasonography | |||||||||||||||||
| 資源タイプ | ||||||||||||||||||
| 資源タイプ | journal article | |||||||||||||||||
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| アクセス権 | open access | |||||||||||||||||
| 著者 |
船倉, 栄
× 船倉, 栄× Shiki, Ayumi× Tsubakishita, Yuji× Mido, Shogo× 片本, 宏× 北原, 豪
WEKO
4580
× 大澤, 健司
WEKO
21720
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| 内容記述タイプ | Abstract | |||||||||||||||||
| 内容記述 | This study aimed to clarify the feasibility of a novel timed artificial insemination (TAI) protocol using ultrasonography, and to determine the associations between the ovarian component and fertility. In Experiment 1, 272 Japanese Black cows with a corpus luteum (CL) ≥ 18 mm in diameter were divided randomly into either the TRT group (134 cows that were administered gonadotropin-releasing hormone [GnRH] 56 h [day 2] after prostaglandin F2α [PGF] administration [day 0], followed by TAI 16–20 h later) or the CN-1 group (138 cows that were administered PGF followed by AI after estrus detection). In addition, the CN-2 group was designated for 306 cows given PGF and inseminated after estrus detection in the past two years at the same farms. In Experiment 2, 38 cows had the same treatment as the TRT group, and the sizes of follicles and CL were video-recorded on days 0 and 2. In Experiment 1, the AI and ovulation synchronization rates were higher in the TRT group than those in the CN-1 group (100 vs. 87.0% and 89.2 vs. 33.3%, respectively) (P < 0.01). The pregnancy rate in the TRT group (60.4%) was higher than that in the CN-2 group (45.1%) (P < 0.05). In Experiment 2, cows with a larger CL diameter and greater CL volume on day 0 had a higher pregnancy outcome (P < 0.05). In conclusion, this protocol was effective for improving pregnancy rates in beef herds, and fertility was associated with the CL size at the time of PGF administration. | |||||||||||||||||
| 言語 | en | |||||||||||||||||
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| 内容記述タイプ | Other | |||||||||||||||||
| 内容記述 | Citation: Funakura H, Shiki A, Tsubakishita Y, Mido S, Katamoto H, Kitahara G, Osawa T. Validation of a novel timed artificial insemination protocol in beef cows with a functional corpus luteum detected by ultrasonography. J Reprod Dev. 2018 Apr 13;64(2):109-115. doi: 10.1262/jrd.2017-135. Epub 2018 Jan 5. PMID: 29311520; PMCID: PMC5902898. |
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| 言語 | en | |||||||||||||||||
| 書誌情報 |
en : Journal of Reproduction and Development 巻 64, 号 2, p. 109-115, 発行日 2018 |
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| 出版者 | The Society for Reproduction and Development | |||||||||||||||||
| 言語 | en | |||||||||||||||||
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| 収録物識別子タイプ | ISSN | |||||||||||||||||
| 収録物識別子 | 0916-8818 | |||||||||||||||||
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| 関連タイプ | isVersionOf | |||||||||||||||||
| 識別子タイプ | DOI | |||||||||||||||||
| 関連識別子 | https://doi.org/10.1262/jrd.2017-135 | |||||||||||||||||
| 権利 | ||||||||||||||||||
| 権利情報 | © 2018 Society for Reproduction and Development | |||||||||||||||||
| 言語 | en | |||||||||||||||||
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| 出版タイプ | VoR | |||||||||||||||||
