Arthur R M
Vet Clin North Am Equine Pract. 1990 Apr;6(1):179-96. doi: 10.1016/s0749-0739(17)30562-x.
Racetracks are ideal environments for the promotion of lower respiratory disease. The stabling is close and unclean, the population is nationally and internationally mobile, and the work the racehorse performs is traumatic to the respiratory tract. The running horse must complete a respiratory cycle with each stride. This relationship requires 130-150 breaths a minute in the running horse. Minute volume has been measured at 1300 L per minute and peak flow rates of 60 L/second in horses traveling at a modest 8 meters per second. As a comparison, the fastest running horse approaches 18 meters per second. The traumatic nature of racing to the respiratory tract is demonstrated by the fact that over 80% of the Thoroughbred racehorses show signs of exercise-induced pulmonary hemorrhage. Treating respiratory disease is a major part of racetrack practice.
赛马场是促进下呼吸道疾病传播的理想环境。马厩空间狭小且不卫生，马匹群体在国内和国际间流动，而且赛马所进行的工作对呼吸道具有创伤性。奔跑的马每跨出一步都必须完成一个呼吸周期。这种关系要求奔跑中的马每分钟呼吸130 - 150次。据测量，中等速度为每秒8米奔跑的马每分钟的潮气量为1300升，峰值流速为每秒60升。相比之下，最快的赛马速度接近每秒18米。超过80%的纯种赛马表现出运动性肺出血的迹象，这一事实证明了赛马运动对呼吸道具有创伤性。治疗呼吸道疾病是赛马场兽医工作的一个主要部分。
