Nagy A, Murray J K, Dyson S
Centre for Equine Studies, Animal Health Trust, Lanwades Park, Newmarket, UK.
Equine Vet J Suppl. 2010 Nov(38):637-43. doi: 10.1111/j.2042-3306.2010.00220.x.
Endurance is the fastest growing Féderation Équestre International (FEI) discipline and the large number of eliminations on veterinary grounds needs to be investigated.
To document elimination rates and explore potential risk factors for elimination due to lameness or metabolic reasons in 9 countries representing 5 continents.
Data for rides of ≥ 100 km ('elite endurance rides') in Australia, France, Italy, South Africa, Spain, United Arab Emirates (UAE), UK, Uruguay and USA were collected from the FEI website. Data were collected for all started horses on the country, number of horses in the class, ride distance, class (e.g. young rider class) and the average speed of the winning horse. Retirements, eliminations for lameness, metabolic and other reasons were recorded. Uni- and multivariable logistic regression models were used to assess the effect of country, number of horses in the class, ride distance and young rider class on 2 outcomes (elimination for lameness and metabolic reasons).
Data for 157 classes at 91 events were analysed. The UAE had the highest number of entries (1497), followed by France (1029) and Spain (408). Of 4326 started horses, 46.0% finished the ride. Lameness was the most common cause of elimination in all countries followed by metabolic reasons (69.2 and 23.5% of all eliminations, and 31.8 and 10.8% of all started horses, respectively). Eight percent of horses were retired by the rider, having passed the veterinary examination. In multivariable analysis, the risk of elimination for lameness was associated with the country in which the ride was held, and the risk significantly increased (OR = 1.60) for horses competing in rides with ≥ 80 entries. The risk of elimination for metabolic reasons was also significantly associated with the country in which the ride was held and the risk significantly increased (OR = 2.17) for horses competing in rides with ≥ 100 entries in the multivariable analysis.
Elimination rates vary between countries, with lameness being the most common reason for elimination globally. Analysis of retrospective data showed country and number of started horses to be risk factors for elimination due to lameness and for elimination due to metabolic disorders. A prospective study is needed to assess the effects of environmental conditions, individual horse speed and other variables on the risk of specific causes of elimination.
耐力赛是国际马术联合会（FEI）中发展最快的项目，因兽医原因导致的大量淘汰情况需要进行调查。
记录淘汰率，并探究来自5个大洲9个国家的马匹因跛行或代谢原因被淘汰的潜在风险因素。
从FEI网站收集了澳大利亚、法国、意大利、南非、西班牙、阿联酋、英国、乌拉圭和美国境内100公里及以上赛程（“精英耐力赛”）的数据。收集了参赛国家所有参赛马匹的数据、参赛马匹数量、赛程、组别（如青年骑手组）以及冠军马的平均速度。记录了马匹退赛、因跛行、代谢及其他原因被淘汰的情况。使用单变量和多变量逻辑回归模型评估国家、参赛马匹数量、赛程和青年骑手组对两个结果（因跛行和代谢原因被淘汰）的影响。
分析了91场赛事中157个组别的数据。阿联酋的参赛马匹数量最多（1497匹），其次是法国（1029匹）和西班牙（408匹）。在4326匹参赛马匹中，46.0%的马匹完成了比赛。跛行是所有国家中最常见的淘汰原因，其次是代谢原因（分别占所有淘汰情况的69.2%和23.5%，占所有参赛马匹的31.8%和10.8%）。8%的马匹在通过兽医检查后被骑手退赛。在多变量分析中，因跛行被淘汰的风险与比赛举办国家有关，参赛马匹数量≥80匹的比赛中，马匹被淘汰的风险显著增加（OR = 1.60）。在多变量分析中，因代谢原因被淘汰的风险也与比赛举办国家显著相关，参赛马匹数量≥100匹的比赛中，马匹被淘汰的风险显著增加（OR = 2.17）。
各国的淘汰率有所不同，跛行是全球最常见的淘汰原因。对回顾性数据的分析表明，国家和参赛马匹数量是因跛行和代谢紊乱被淘汰的风险因素。需要开展前瞻性研究，以评估环境条件、马匹个体速度和其他变量对特定淘汰原因风险的影响。
