畜牧兽医学报2024，Vol.55Issue(7)：2963-2972,10.DOI:10.11843/j.issn.0366-6964.2024.07.016
2岁伊犁马心脏维度与运动性能的关联性分析
Correlation Analysis of Cardiac Dimensions and Racing Performance in 2 Years Old Yili Horses
摘要
Abstract
The study aimed to explore the internal relationship between the racing performance and the cardiac dimension of 2 years old speed racing Yili horse in 2 000 m and improve the breeding efficiency of Yili sports horses.The 30 speed racing Yili horses aged 2 years old in 2 000 m were selected as the research objects,including 21 male horses and 9 female horses.The top 10 horses were ranked according to their best race time,and the top 10 were classified as excellent group,the ranked 11-20 were classified as ordinary group,and the ranked 21-30 were classified as poor group.There was no significant difference in the body weight of the horses(P＞0.05),fitness was good and jockeys were of similar calibre.Cardiac dimensions were measured in horses using echocardiography,and the correlation between cardiac dimensions and performances such as race time,rank,GPA,and bonuses was analyzed,principal component analysis was performed on the 19 cardiac dimension indicators,and the prediction equation was fitted.The results showed that in the case of no significant differences in body size,in the 2 years old speed racing Yili horse in 2 000 m,the GPA and bonuses of the excellent group were significantly higher than those of the ordinary group and the poor group(P＜0.01),the race time and ranking of the competition were significantly lower than those of the poor group(P＜0.01);end-systolic left ventricular free wall thickness(LVFWs)was significantly greater in the excellent group than in the poor group(P＜0.01).The left ventricular long axis diameter(LVLD)was highly significantly larger in the excellent group and the ordinary group than in the poor group(P＜0.01).The race time of the 2 years old speed racing Yili horse in 2 000 m was highly significantly negatively correlated with the end-diastolic left ventricular diameter(LVIDd)and LVLD(P＜0.01);the GPA was highly significantly positively correlated with the end-systolic pulmonary artery diameter(PADs)(P＜0.01);the ranking was highly significantly negatively correlated with LVIDd and LVLD(P＜0.01);there is a highly significant positive correlation(P＜0.01)between bonus and LVIDd.A total of 5 principal components were obtained,which comprehensively reflect the cardiac dimension information of the 2 years old speed racing Yili horse in 2 000 m.By fitting 4 prediction equations,the coefficient of determination for both race time and rankings is higher than 0.6.Cardiac dimension indicators such as LVIDd and LVLD have a significant impact on racing performance in Yili horses.Conducting principal component analysis on the cardiac dimension and constructing a multiple stepwise regression equation between racing performance and cardiac dimension is of great significance for evaluating the racing performance of 2 years old speed racing Yili horse in 2 000 m.关键词
伊犁马/超声心动图/心脏维度/运动性能Key words
Yili horse/echocardiography/cardiac dimension/racing performance分类
农业科技引用本文复制引用
彭宣,曾亚琦,姚新奎,王彤亮,孟军,王建文,欧阳文,黄金龙,黄云江,杨曦曦,李婉卿..2岁伊犁马心脏维度与运动性能的关联性分析[J].畜牧兽医学报,2024,55(7):2963-2972,10.基金项目
自治区创新环境(人才、基地)建设专项(PT2311) （人才、基地）
中央引导地方科技发展专项资金项目(ZYYD2023C02) （ZYYD2023C02）
国家自然科学基金青年基金项目(32202667) （32202667）
新疆维吾尔自治区重大科技专项(2022A02013-1) （2022A02013-1）
新疆马繁育与运动生理重点实验室 （）
