A retrospective study of radiographic abnormalities in the repositories of 2-year-old Thoroughbred in-training sales in Japan
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- MIYAKOSHI Daisuke
- Hidaka Horse Breeders Association, Hokkaido 056-0002, Japan
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- SENBA Hiroyuki
- The Japan Bloodhorse Breeders’ Association, Hokkaido 056-0144, Japan
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- SHIKICHI Mitsumori
- Hidaka Horse Breeders Association, Hokkaido 056-0002, Japan
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- MAEDA Masaya
- Hidaka Horse Breeders Association, Hokkaido 056-0002, Japan
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- SHIBATA Ryo
- Hidaka Horse Breeders Association, Hokkaido 056-0002, Japan
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- MISUMI Kazuhiro
- Faculty of Veterinary Medicine, Kagoshima University, Kagoshima 890-0065, Japan
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説明
This study aimed to evaluate the influence of radiographic abnormalities of 2-year-old Thoroughbred horses that were listed at in-training sales in Japan, on whether they started to race or not at 2–3 years of age. Radiographs of 850 2-year-old Thoroughbreds in the in-training sales repository from 2007 to 2010 were reviewed, and 26 categories of radiographic abnormalities were found. Forty-three horses (5.1%, 43/850) did not start a race at 2–3 years of age. In accordance with the racing results for this age category, as determined by Fisher’s exact test and multiple logistic regression analysis, none of the radiographic abnormalities were significantly related to failure to start a race. At 2 years of age, 198 horses (23.3%, 198/850) did not start a race. Horses with enlargement of the proximal sesamoid bones in the fore (9 of 19 horses) and hind limbs (5 of 9 horses) did not start a race at the age of 2 years, and fewer of these horses (fore, P=0.021; hind, P=0.030) started a race at the age of 2 years compared with the population of horses without these radiographic abnormalities. These results suggest that identification of radiographic enlargement of the proximal sesamoid bones during training sales could derail the racing debut of horses at the age of 2 years. However, this might not necessarily indicate a poor prognosis and resulting in retirement from racing at 2–3 years of age.
収録刊行物
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- Journal of Equine Science
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Journal of Equine Science 27 (2), 67-76, 2016
日本ウマ科学会
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詳細情報 詳細情報について
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- CRID
- 1390282679345352320
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- NII論文ID
- 130005158520
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- NII書誌ID
- AA11010806
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- ISSN
- 13477501
- 13403516
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- NDL書誌ID
- 027510746
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- PubMed
- 27330400
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDLサーチ
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- 抄録ライセンスフラグ
- 使用不可