双峰驼水代谢与血液中无机离子浓度的动态关系

对双峰驼禁水１５ｄ，于禁水前、后及暴饮后采血，测定其血液中多种无机离子的浓度变化。结果表明，全血碳酸氢盐含量在禁水期变化极显著，与禁水前相比，冬季试验升高２８．０９％，夏季试验升高２６．５９％；暴饮后快速下降，冬、夏季试验分别比禁水前低９．５％和７．８％，４ｄ后恢复正常。血清中Ｋ＋和Ｆｅ２＋含量未见统计学差异。血清中Ｎａ＋、Ｃｌ－、Ｃａ２＋、Ｍｇ２＋、和Ｐ３＋的含量于禁水期逐渐上升，暴饮后快速下降，其变化均有显著差异，其中Ｎａ＋的正常值显著高于其他反刍动物。结果表明，双峰驼在禁水期具有较高的血液渗透压和碱储量，其对保证缺水时血液酸碱平衡的调节，维持血容量，保证机体正常水代谢功能具有重要作用，是骆驼耐干渴的重要原因之一。

Dynamic Relationship between the Water Metabolism and the Concentrations of Blood Inorganic Ions in the Two Humped Camel (Camelus bactrianus)

Eight two humped camels were deprived of drinking water for 15 days. Blood samples were collected before and after water deprivation and after water crapulence. The samples were analysed to determine the changes of some of inorganic ions. The results indicated that the blood content of bicarbonate revealed a significant change during the water deprivation; It had a average increase of 27.34% during winter and summer, and decreased rapidly to a level of about 8.7% lower than the normal one after crapulence, then returned to the normal level in 4 days later. There were no significant changes existed between the contents of serum K and Fe 2 . However the contents of serum Na , Cl -, Ca 2 , Mg 2 and P 3 increased gradually during the water deprivation and decreased extremely after water crapulence. Significant differences existed between the contents of these inorganic ions during water deprivation and after water crapulence. The result also showed that the normal content of serum Na had a higher level than that in other ruminants. It can be concluded that the two humped camel has a higher osmotic pressure and alkaline reserve during water deprivation, which would assure the regulation of acid base balance, maintain the blood volume and keep the water metabolism on a normal level. This may be one of the reason why the two humped camel can survive under the condition of extreme thirst.