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Archivos de Zootecnia

On-line version ISSN 1885-4494Print version ISSN 0004-0592


LEE, H.K.  and  PARK, K.D.. Effect of the ratio between carried and body weight on finishing time in thoroughbreds. Arch. zootec. [online]. 2011, vol.60, n.231, pp.681-686. ISSN 1885-4494.

Since the racehorses with excellent performance have a heavy carried weight (CW) in the current system, their finishing time does not increase along with heavier CW. As the CW increases, the finishing time decreases. Moreover, the percentage of victories also gets higher as the CW increases. Therefore, the effect of ratio CW/ BW as the ratio of carried weight to the body weight on finishing time was analyzed in order to suggest the problems of current CW system. The objective of this study is to examine the influence of CW/BW ratio on finishing time, using a total of 155 656 racing records belong to 8197 racehorses. Generally, the BW of racehorse is heavier, the potentiality as a good racehorse is higher. The fact that the ratio CW/BW is high means that most of racehorses have lighter BW. As the ratio CW/BW increases in the racing distance of 1000 m, the actual finishing time tends to increase in general. The finishing time that has run while bearing the ratio of 12.0-12.7%, has demonstrated a good racing record. When the ratio CW/BW is about 13.1% or more, it has begun to influence on the finishing time gradually. Also, the racehorse tends to have a growth potential in a long distance race when the BW is no less than 475-480 kg. Consequently, when setting a handicap, it is desirable to consider the just before raced BW of racehorse to a certain degree.

Keywords : Handicap; KRA (Korea Racing Association).

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