Abstract: Study on the correlation between body measurements and competition results on trot race in Yili horse. Body height(X₁),body length(X₂),heart girth(X₃) and cannon circumference(X₄) were recorded,and calculated body length ratio(X₅),heart girth ratio(X₆) and cannon circumference ratio(X₇) in different Yili trotter races. Analysis the correlation between the date all above and competition results with SPSS 18.0 software. The results showed that in different competition item,body measurements was significant or extremely significant correlation with competition results (P<0.05;P<0.01). In 1000 m race,the time used for competition would be shorten along with the increase of body height,body length,heart girth and the decrease of cannon circumference,heart girth ratio and cannon circumference ratio. In 3000 m race,the time used for competition would be shorten along with the increase of body height,body length and the decrease of heart girth ratio and cannon circumference ratio. In 5000 m race,the time used for competition would be shorten along with the increase of body height,heart girth,body length and the decrease of cannon circumference ratio.

Key words: Yili horse; trot race; body measurements; correlation analysis; regression equation