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KMID : 1025520000420010021
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Journal of Animal Science and Technology
2000 Volume.42 No. 1 p.21 ~ p.28
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Relationship Between Dosage System and Racing Performance of Thoroughbreds
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Lee K. J.
Park K. D.
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Abstract
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The purpose of this study was to determine the relationship between racing performance and Dosage System, using a total of 73,657 race records and 5 generation pedigree records of 3,648 racehorses. The results obtained were as follows. 1. Mean inbreeding coefficient of racehorses was 0.5%, and means of Brilliant, Intermediate, Classic, Solid, Professional, Total Point, Dosage Index, and Center of distribution were 3.95, 2.23, 4.58, 1.15, 1.14, 13.04, 2.90 and 0.48, respectively. 2. There was a significant negative correlation between Dosage profiles and racing time for Brilliant and Intermediate in the race shorter than 1,400m and for Classic in all kind of distances, so Classic showed varied attainment in both long and short distances. 3. Means of Brilliant, Intermediate and Classic of top 5% racehorses in racing perfor- mance were higher than overall means, and those in Solid and Professional were scarcely different from overall means. 4. Overall means of Dosage Index and Center of distribution were not different by distance, but those of top 5% racehorses in racing performance decreased as the distance of race increases.
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KEYWORD
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Dosage system, Dosage index
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