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Length of lags in responses of milk yield and somatic cell score on test day to heat stress in Holsteins
https://obihiro.repo.nii.ac.jp/records/4390
https://obihiro.repo.nii.ac.jp/records/4390a577f0c6-0435-4564-ba5c-f3575736fb60
名前 / ファイル | ライセンス | アクション |
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fulltext (317.1 kB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2019-08-08 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Length of lags in responses of milk yield and somatic cell score on test day to heat stress in Holsteins | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | heat stress | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Holstein | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | temperature?humidity index | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | test day | |||||
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 |
萩谷, 功一
× 萩谷, 功一× Bamba, Ikumi× Osawa, Takefumi× Atagi, Yamato× Takusari, Naozumi× Itoh, Fumiaki× Yamazaki, Takeshi |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | We used daily records from provincial Japanese weather stations and monthly test-day records of milk production to investigate the length of the lags in the responses of cows’ milk yield and somatic cell score (SCS) to heat stress (HS). We also investigated the HS thresholds in milk yield and SCS. Data were a total of 17,245,709 test-day records for milk and SCS in Holstein cows that had calved for the first time between 2000 and 2015, along with weather records from 60 weather stations. Temperature–humidity index (THI) values were estimated by using average daily temperature and average daily relative humidity. Adjusted THI values were calculated by using temperature, relative humidity, wind speed, and solar radiation. The model contained herd, calving year, month of test day, age group, days in milk, and THI as a fixed effect. THIs for each day from 14 days before the test day until the test day were used to represent the HS effects. The HS occurring 3 days, and between 8 and 10 days, before the test day had the greatest effect on the milk yield and SCS, respectively. The threshold THI values for the HS effect were about 60–65 for both traits. © 2019 The Authors. Animal Science Journal published by John Wiley & Sons Australia, Ltd on behalf of Japanese Society of Animal Science | |||||
言語 | en | |||||
書誌情報 |
en : Animal Science Journal 巻 90, 号 5, p. 613-618, 発行日 2019-05-01 |
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出版者 | ||||||
言語 | en | |||||
出版者 | Blackwell Publishing | |||||
ISSN | ||||||
収録物識別子タイプ | PISSN | |||||
収録物識別子 | 13443941 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA11677214 | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | info:doi/10.1111/asj.13186 | |||||
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 |