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Factors Affecting the Fertility of Ewes after Intrauterine Insemination with Frozen-Thawed Semen During the Non-Breeding Season
https://obihiro.repo.nii.ac.jp/records/705
https://obihiro.repo.nii.ac.jp/records/7053a336130-e659-4edf-a6fe-e5519302ac3f
名前 / ファイル | ライセンス | アクション |
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factors.pdf (372.3 kB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2011-02-04 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Factors Affecting the Fertility of Ewes after Intrauterine Insemination with Frozen-Thawed Semen During the Non-Breeding Season | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Artificial insemination | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Fertility | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Frozen semen | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Sheep | |||||
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 |
Fukui, Yutaka
× Fukui, Yutaka× Kohno, Hirohide× Okabe, Kentaro× Katsuki, Sara× Yoshizawa, Masahiro× Togari, Tetsuro× Watanabe, Hiroyuki |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | In this study, two successive field trials were conducted during the non-breeding season to investigate various factors affecting on fertility of Suffolk ewes after intrauterine insemination with frozen-thawed semen. In the first year (Experiment 1), three sperm numbers per insemination dose (0.25, 0.5 and 1 million sperm) and five sheep farms were used, and in the second year (Experiment 2), parity, age, body weight, body condition score (BCS) and postpartum days were investigated to compare pregnancy and lambing rates. High pregnancy and lambing rates (70.6 and 70.6%, respectively) were obtained with 0.25 million sperm per dose. There were no significant differences in the pregnancy and lambing rates among the five farms, but there was a tendency for one farm to have higher pregnancy (75.8%, P=0.065) and lambing (72.7%, P=0.077) rates than those (46.7-53.3% and 45.2-53.3% for the pregnancy and lambing rates, respectively) of the other farms. In Experiment 2, ewe age significantly affected both the pregnancy and lambing rates. Nulliparous ewes had a higher lambing rate (72.0%) than that (44.2%) of multiparous ewes, but a significant difference was not revealed. Regardless of body weight, BCS tended to be an important factor influencing on fertility of ewes. Body weight and the postpartum days did not affect the fertility of ewes. It was concluded from these results that the fertility of Suffolk ewes after intrauterine insemination with frozen semen was significantly influenced by sperm number per dose and ewe age. Nulliparous ewes at less than three years of age and with a BCS of more than 3.0 are expected to have higher fertility than other ewes. | |||||
言語 | en | |||||
書誌情報 |
en : Journal of Reproduction and Development 巻 56, 号 4, p. 460-466, 発行日 2010 |
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出版者 | ||||||
言語 | en | |||||
出版者 | Society for Reproduction and Development | |||||
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.10-015T | |||||
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 |