サラブレッド種における多数部位体計測値の一日の変動

抄録

It is an important problem to study diurnal changes in measurements of body parts in the Thoroughbred when a large number of horses are measured in the course of a day. In this study, 24 body parts were measured in 43 Thoroughbreds at three different times, the day before training, immediately after training, and after grazing. As a result, there were significant chronological differences in the measurements of few parts by the analysis of variance, but such difference was significant at 5% levels in thickness of the breast. The difference in thickness of the breast, however, was considered to be within the range of measuring error. It seems to be the best way to measure Thoroughbreds at the same time on the same day, but no statistical errors will be produced, if all horses are measured on the same day.