de Waal A, Potgieter F J
Department of Chemical Pathology, Faculty of Medicine, University of the Orange Free State, Bloemfontein, Republic of South Africa.
Vet Res Commun. 1991;15(4):309-14. doi: 10.1007/BF00430036.
Dehydration, to varying degrees, will inevitably occur in horses participating in endurance trail rides. This water loss is directly related to the amount of body water lost through evaporative cooling, that in turn being related to the amount and rate of work performed, and to the environmental temperature and humidity. An electronic apparatus that can substitute for the conventional and time-consuming venous haematocrit was developed to measure the animals' hydration status. The mechanism of this electrometer is based upon the relationship between the red cell content and the electrical conductivity of the blood. The electrometer reading gave a significant correlation (p less than 0.001) with the venous haematocrit, thus indicating that the electrometer is a reliable apparatus for determining the animals' hydration status within seconds of venepuncture.
参加耐力赛的马匹不可避免地会出现不同程度的脱水。这种水分流失直接与通过蒸发散热而流失的身体水分量有关，而蒸发散热又与所做工作的量和速率、环境温度及湿度有关。为测量动物的水合状态，研发了一种可替代传统且耗时的静脉血细胞比容测量法的电子仪器。该电子测量仪的原理基于红细胞含量与血液电导率之间的关系。电子测量仪读数与静脉血细胞比容呈显著相关性（p小于0.001），这表明该电子测量仪是一种在静脉穿刺后数秒内就能可靠测定动物水合状态的仪器。
