China Animal Husbandry and Veterinary Medicine ›› 2021, Vol. 48 ›› Issue (6): 2091-2100.doi: 10.16431/j.cnki.1671-7236.2021.06.022

• Genetics and Breeding • Previous Articles     Next Articles

The Correlation Analysis Between Stride Length Index,Stride Frequency Index and Race Performance of Young Yili Horse

ZENG Yaqi1,2,3, WANG Jianwen1,2,3, YAO Xinkui1,2,3, REN Wanlu1,2,3, WANG Chuankun1,2,3, REN Xiang5, GE Shimeng4, KONG Qisen1,2,3, MENG Jun1,2,3   

  1. 1. College of Animal Sciences, Xinjiang Agricultural University, Urumqi 830052, China;
    2. Xinjiang Key Laboratory of Equine Breeding and Exercise Physiology, Urumqi 830052, China;
    3. Horse Industry Research Institute, Xinjiang Agricultural University, Urumqi 830052, China;
    4. Xinjiang Chixiaobojun Animal Husbandry Company Limited, Urumqi 830052, China;
    5. Xinjiang Horse Industry Association, Urumqi 830000, China
  • Received:2020-12-14 Online:2021-06-20 Published:2021-06-18

Abstract: The purpose of the experiment was to study the difference of stride index and stride frequency index between different performance of young Yili horses,and explore the correlation between the two indexes and performance,so as to improve the scientificity and accuracy of individual selection and performance measurement of Yili horses.In total,72 Yili horses aged 2 years were enrolled in this study.The stride characteristics and body size index were measured to calculate the stride length index and stride frequency index.The differences of stride length index and stride frequency index between different distance and performance were analysed,and made partial correlation analysis between each index and racing time,and probed into the correlation between each index and performance.The results showed that in the 1 600 m race,withers height stride frequency index and body length stride frequency index of the elite group were extremely significantly higher than these variables of the ordinary group (P<0.01) and significant negative correlate with racing time (P<0.01).The withers height stride length index,body length stride length index,withers height overlap stride length index and body length overlap stride length index in the elite group were extremely significantly higher than these variables in the ordinary group (P<0.01),and were significant negative correlated with racing time (P<0.01).In the 3 600 m race,the withers height stride frequency index and body length stride frequency index of the elite group were extremely significantly higher than these variables of ordinary group (P<0.01),and body length stride frequency index were significant negative correlated with the racing time (P<0.01),withers height overlap stride length index and body length overlap stride length index of the elite group were significantly higher than that of the ordinary group (P<0.05),and negatively correlated with the racing time (P<0.05).The withers height stride frequency index and body length frequency index were filtrated as primary indices for young Yili horses,and could be widely used in breeding and training to improve the efficiency of performance evaluation.

Key words: Yili horse; stride length index; stride frequency index

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