著者

Kazuhiro KAMIYA Hajime OHMURA Daisuke ETO Kazutaka MUKAI Shigeto USHIYA Atsushi HIRAGA Sadao YOKOTA

出版者

Japanese Society of Equine Science

雑誌

Journal of Equine Science (ISSN:13403516)

巻号頁・発行日

vol.14, no.3, pp.97-100, 2003 (Released:2003-12-19)

参考文献数

13

被引用文献数

1

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T. M. Opera O is considered as one of the greatest racehorses in the history of horseracing in Japan. Only a very few data is available on circulatory function of elite Thoroughbred racehorses. Recently, we obtained data on circulatory parameters of T. M. Opera O. The left ventricular mass of T. M. Opera O, as measured on an echocardiogram, was 4.60 kg. The resting heart rate (HR) of T. M. Opera O was 25 beat/min. The low-frequency and high-frequency power, as determined by an analysis of HR variability, were 13,900 and 5.963 ms2, respectively, which were considerably higher than those of the other racehorses. These results suggest that a large heart, formed by genetic factors and training, markedly enhanced the parasympathetic nervous activity and reduced the resting HR of T. M. Opera O. The data we obtained from T. M. Opera O is invaluable for understanding the physical fitness of elite Thoroughbreds and for further developing their athletic performance.

著者

Naoki SASAKI Yasunobu NISHI Yumi FUJIWARA Tetsuya TAKEYAMA Hayata KUMAGAI Samantha SENARATHNA Shigeto USHIYA Takashi TOKUYAMA Takahito TOKUYAMA Takaaki TOKUYAMA Tomohiro MII Satomi AYAKI Kosuke MATSUNO Yuki NAKAGAWA Yoshitaka NISHIHARA Yasuho TAURA

出版者

Japanese Society of Equine Science

雑誌

Journal of Equine Science (ISSN:13403516)

巻号頁・発行日

vol.32, no.2, pp.27-30, 2021 (Released:2021-06-18)

参考文献数

15

被引用文献数

1

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Gastric ulcers cause appetite loss, poor body condition, and colic in horses. This study investigated the protective effect of a rice fermented extract on the gastric mucosa in 17 healthy Thoroughbreds. For one month, horses in the rice fermented extract (nine horses) and control (eight horses) groups were orally administered a rice fermented extract (100%; 0.2 ml/kg, SID) and tap water (0.2 ml/kg), respectively. Gastric endoscopic images were obtained before and one month after rice fermented extract administration. The gastric ulcer score was lower after administration (median, 1; maximum, 2; minimum, 1) than before administration (median, 4; maximum, 4; minimum, 3) in the rice fermented extract group (P<0.05). In conclusion, the administration of a rice fermented extract for one month improves gastric mucosal lesions in Thoroughbreds with gastric ulcers.