Correlation Analysis On Difference Of Body Conformation And Gait Feature In Trotting Race Between Different Types Horse

In this study, adult Thoroughbred × Yili horses, Orlov trotter × Yili horses, Russia trotter × Yili horses and Hanoverian horse were selected as sample, their subsection physical measurements and different body angles were measured, differences in each physical measurement, index, proportion and body angles were analysed, and correlation between these indexes and gait feature in trotting race were also analysis. The results showed that:The neck length and humerus length of stallions were significant higher than mares in Orlov trotter × Yili horses(P<0.05). The humerus length of stallions was significant higher than mares in Russia trotter × Yili horses(P<0.05). The chest breadth of stallions was significant higher than mares in Hanoverian horse(P<0.05). In Thoroughbred × Yili horses, the lumbar spine length of stallions was extremely significant higher than mares(P<0.01); and cannon circumference, rump length and chest breadth of stallions were significant higher than mares(P<0.05). The withers height, body length, chest circumference, cannon circumference, neck length, scapular length, cannon length, lumbar spine length, rump length, rump height, chest depth and tibiae length of Thoroughbred × Yili horses, Orlov trotter × Yili horses and Russia trotter × Yili horses were all extremely significant lower than Hanoverian horse(P<0.01). The trunk index of Thoroughbred × Yili horses was significantly higher than Orlov trotter × Yili horses(P<0.05). The humerus length/ back length, thighbone length/ back length and tibiae length/ back length of Thoroughbred × Yili horses, Orlov trotter × Yili horses and Russia trotter × Yili horses were extremely significant lower than Hanoverian horse(P<0.01).The neck base angle of stallions was significant higher than mares in Thoroughbred × Yili horses(P<0.05). The neck base angle and humeral angle of stallions were significant lower than mares in Russia trotter × Yili horses(P<0.05). The buttock angle and hip joint angle of stallions were significant lower than mares in Hanoverian horse(P<0.05). The neck base angle of stallions in Russia trotter × Yili horses and Hanoverian horse were extremely significant lower than that of stallions in Thoroughbred × Yili horses and Orlov trotter × Yili horses(P<0.01). The neck base angle of mares in Hanoverian horse and Thoroughbred × Yili horses were significant lower than that of mares in Russia trotter × Yili horses(P<0.05). The humeral angle of stallions in Hanoverian horse was significant lower than that of stallions in Orlov trotter × Yili horses(P<0.05). The humeral angle of mares in Thoroughbred × Yili horse was significant lower than that of mare in Russia trotter × Yili horses(P<0.05).No gender-related differences were found on the gait feature of Thoroughbred × Yili horses, Orlov trotter × Yili horses and Russia trotter × Yili horses(P>0.05). The stride frequency of mares in Russia trotter × Yili horses was extremely significant lower than that of mares in Thoroughbred × Yili horses and Orlov trotter × Yili horses(P<0.01); but the stride length of mares in Russia trotter × Yili horses was extremely significant higher than that of mares in Thoroughbred × Yili horses and Orlov trotter × Yili horses(P<0.01). There is extremely significant difference on the height of the front foot between Russia trotter × Yili horses and Orlov trotter × Yili horses(P<0.01).On Orlov trotter × Yili horses, the humerus length was significant positive correlated with speed(P<0.05). The withers height and head length/ neck length was extremely significant positive correlated with stride length(P<0.01); head length and humerus length were significant positive correlated with stride length(P<0.05). The withers height, head length and head length/ neck length were highly significant positive correlated with the height of the front foot(P<0.01); the cannon circumference ratio was significant negative correlated with the height of the front foot(P<0.05). The withers height and head length were highly significant positive correlated with the height of the back foot(P<0.01); humerus length and head length/ neck length were significant positive correlated with the height of the back foot(P<0.05); the cannon circumference ratio was significant negative correlated with the height of the back foot(P<0.05).On Russia trotter × Yili horses, the cannon circumference was significant positive correlated with speed(P<0.05). The cannon circumference ratio and back length/ withers height were significant positive correlated with stride frequency(P<0.05); tibiae length, rump high/ back length and tibiae length/ back length were significant negative correlated with stride frequency(P<0.05); the withers height and rump high were highly significant negative correlated with stride frequency(P<0.01). Cannon circumference, neck length and scapular length/ back length were significant positive correlated with stride length(P<0.05); the withers height, scapular length and rump high were highly significant positive correlated with stride length(P<0.01). Cannon circumference and tibiae length were significant positive correlated with the height of the front foot(P<0.05); the withers height and rump high were highly significant positive correlated with the height of the front foot(P<0.01). The cannon circumference and tibiae length/ back length were significant positive correlated with the height of the back foot(P<0.05); the body length ratio was significant negative correlated with the height of the back foot(P<0.05); the withers height,rump high and tibiae length were highly significant positive correlated with the height of the back foot(P<0.01).On Thoroughbred × Yili horses, the cannon length,rump length/ neck length and head length were significant positive correlated with speed(P<0.05).The withers height, body length, rump high, chest depth and tibiae length were highly significant negative correlated with stride frequency(P<0.01); the chest circumference, neck length, thighbone length and tibiae length/ back length were significant negative correlated with stride frequency(P<0.05). The withers height, body length, chest circumference, scapular length, humerus length, rump high, chest depth and tibiae length were highly significant positive correlated with stride length(P<0.01); the scapular length/ back length was significant positive correlated with stride length(P<0.05); the cannon circumference ratio was significant negative correlated with stride length(P<0.05). The withers height, body length, chest circumference, scapular length, rump high and chest depth were highly significant positive correlated with the height of the front foot(P<0.01); the humerus length, thighbone length and tibiae length were significant positive correlated with the height of the front foot(P<0.05); the thoracic index was significant negative correlated with the height of the front foot(P<0.05).The withers height, scapular length and rump high were highly significant positive correlated with the height of the back foot(P<0.01); the chest circumference, humerus length and chest depth were significant positive correlated with the height of the back foot(P<0.05).