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Ultrasonographic Evaluation of Thymus in Holstein Calves and Heifers and its Diagnostic Application
http://hdl.handle.net/10659/3189
http://hdl.handle.net/10659/318922d02d95-f8ff-4476-95c9-c0c62a84368d
Item type | 学術雑誌論文 / Journal Article(1) | |||||
---|---|---|---|---|---|---|
公開日 | 2013-06-04 | |||||
タイトル | ||||||
タイトル | Ultrasonographic Evaluation of Thymus in Holstein Calves and Heifers and its Diagnostic Application | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | cattle | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | chronic pneumonia | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | thymus | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | ultrasonography | |||||
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 | |||||
アクセス権 | ||||||
アクセス権 | metadata only access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
著者 |
KUROSAWA, Takashi
× KUROSAWA, Takashi× KONO, Yuko× NAGAHATA, Hajime |
|||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | This study was performed to evaluate the cross section of the thymus in 46 clinically healthy Holstein calves and heifers from birth to 100 weeks of age and 8 age-matched affected animals with chronic bronchopneumonia by ultrasonography. The cross sectional area of the thymus increased in healthy calves and heifers from birth to 31 weeks of age, peaked around 35 weeks of age, and then decreased until 100 weeks after birth. A positive correlation (r= 0.74, P<0.05) was found between the area in cross section and the weight of the whole thymus in calves and heifers with chronic bronchopneumonia. The cross- sectional areas of the thymus were significantly (P<0.05) lowered in animals with chronic bronchopneumonia. The cross sections of thymus in clinically healthy calves at 2 weeks of age and heifers at 34 weeks and 87 weeks of age were hypoechoic, moderately hyperechoic and hyperechoic, respectively. The observation of thymus by ultrasonography seems to be an effective tool for estimating the size of the thymus objectively in Holstein calves and heifers from birth to 100 weeks of age. The results of this study prove the approach to be useful and applicable to monitor the growth of thymus in Holstein calves and heifers and their association with chronic pneumonia. | |||||
書誌情報 |
The journal of veterinary medical science 巻 73, 号 11, p. 1433-1436, 発行日 2011-11 |
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DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1292/jvms.11-0086 | |||||
出版者 | ||||||
出版者 | 日本獣医学会 | |||||
資源タイプ | ||||||
内容記述タイプ | Other | |||||
内容記述 | Article |