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Optimal value for the exponential term of Wilmink's function according to current Holstein lactation curves in Japan
https://obihiro.repo.nii.ac.jp/records/4845
https://obihiro.repo.nii.ac.jp/records/48454bcda04f-3b3f-4f43-a2f6-d723cdedf99f
名前 / ファイル | ライセンス | アクション |
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Full text (1.4 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2023-03-16 | |||||
タイトル | ||||||
タイトル | Optimal value for the exponential term of Wilmink's function according to current Holstein lactation curves in Japan | |||||
言語 | en | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | dairy cattle; Holstein; lactation curve; lactation persistency; Wilmink's function | |||||
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 |
千葉, 史織
× 千葉, 史織× Osawa, Takefumi× 萩谷, 功一 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | We compared values of Wilmink's exponential term to describe the lactation curves of Holstein cows in Japan. Data were a total of 100,971,798 test-day records from the first through fifth parities during 1991 through 2018. The lactation curve model used fourth-order Legendre polynomials and Wilmink's exponential term. In total, 810 analyses were executed to compare six values (−0.02, −0.03, …, −0.07) for the exponential term to select the one that yielded the smallest root mean square error. For all parities, daily milk yield and lactation persistency increased consistently and peak lactation days occurred later from year to year. For the years evaluated, the optimal exponential term was −0.05 for first and second parities, −0.04 for third parity, and −0.03 for fourth and fifth parities. The change in the exponential parameter with increasing year was related to delays in peak lactation. © 2022 Japanese Society of Animal Science. | |||||
言語 | en | |||||
書誌情報 |
en : Animal Science Journal 巻 93, 号 1, p. e13776, 発行日 2022 |
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出版者 | ||||||
出版者 | John Wiley and Sons | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 1344-3941 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA11677214 | |||||
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関連タイプ | isVersionOf | |||||
識別子タイプ | PMID | |||||
関連識別子 | 36274649 | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | info:doi/10.1111/asj.13776 | |||||
権利 | ||||||
言語 | en | |||||
権利情報 | This is the peer reviewed version of the following article: Chiba S., Osawa T., Yamaguchi S., Hagiya K. Optimal value for the exponential term of Wilmink's function according to current Holstein lactation curves in Japan. Animal Science Journal. 2022;93–1, which has been published in final form at https://doi.org/10.1111/asj.13776. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. | |||||
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 | AM | |||||
出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||
日本十進分類法 | ||||||
主題Scheme | NDC | |||||
主題 | 645 |