A retrospective study of radiographic abnormalities in the repositories for Thoroughbreds at yearling sales in Japan

The Journal of Veterinary Medical Science

Kazuhiro MISUMI¹  Mitsumori SHIKICHI²  Daisuke MIYAKOSHI²  Ryo SHIBATA²  Masaya MAEDA²  Hiroyuki SENBA³ 

[1] Faculty of Veterinary Medicine, Kagoshima University, 1-21-24 Korimoto, Kagoshima 890-0065, Japan;Hidaka Horse Breeders Association, 175-2 Shizunai Kamimori Shinhidaka-cho, Hokkaido 056-0002, Japan;The Japan Bloodhorse Breeders’ Association, 517 Shizunai Tahara Shinhidaka-cho, Hokkaido 056-0144, Japan

关键词: racehorse;    radiographic repository;    radiography;    Thoroughbred;    yearling;   

DOI  :  10.1292/jvms.16-0425

学科分类：兽医学

来源: Japanese Society of Veterinary Science

【 摘 要 】

This study aimed to evaluate whether radiographic abnormalities at yearling sales were associated with the failure to start racing at 2–3 years of age. Radiographic abnormalities in the carpal (n=852), tarsal (n=976), metacarpophalangeal (n=1,055), and metatarsophalangeal joints (n=1,031) from 1,082 horses, recorded at yearling sale, were reviewed. Eighty-two horses (7.6%) failed to start racing. Radiographic abnormalities such as wedged or collapsed tarsal bones, irregular lucency of a sagittal ridge at the distal aspect of the distal third metatarsal bone, and proximal dorsal fragmentation of the first phalanx in metatarsophalangeal joints were associated with failure to start racing in these horses. In the follow-up survey of 12 horses with one or more these radiographic abnormalities, the horses failed to start racing due to reasons unrelated to these radiographic abnormalities such as pelvic fractures (2 horses), fracture of a distal phalanx (1 horse), cervical stenotic myelopathy and proximal sesamoid fracture (1 horse), superficial digital flexor tendonitis (2 horses), laryngeal hemiplegia (1 horse), economic problems (2 horses) and unknown causes (3 horses). Although radiographic abnormalities at yearling sales can be associated with failure to start racing at 2–3 years of age, these radiographically detected abnormalities might not necessarily cause that failure.

【 授权许可】

Unknown