不同海拔高度西藏高原牦牛若干血液生理常值的比较

本试验对西藏藏北高原那曲(海拔4500米)牦牛,藏南河谷林芝(海拔3000米)牦牛进行了某些高原生理特性对比研究。测定了红细胞总数、红细胞压积、血液总量、血红蛋白含量及其电泳分析、血清蛋白含量及其电泳分析等。测定结果表明,生活在高海拔的藏北那曲牦牛,其红细胞总数、红细胞压积、血液总量、血红蛋白均极明显地高于较低海拔的藏南河谷牦牛,而其红细胞容积的立方微米数值较小,红细胞内血红蛋白的平均重量较轻,并发现变异血红蛋白(A_3)。根据本文分析,其主要归因于高海拔、低氧压。雄性牦牛的变异血红蛋白数量高于雄牦牛,差异极显著(P

A COMPARISON ON SEVERAL HEMATOLOGIC VALUES OF YAKS ON TIBET PLATEAU AT DIFFERENT ALTITUDES

Some hematologic values namely the erythrocyte count, hematocrit lotal blood volume and amounts of hemoglobin and serum proteins were studied with yaks from Naqu county(4500 meters above sea level)situated on the Northern Tibet Plateau and Linzhi county located in the river valley region ( 3000 meters above sea level ) of the Southern Tibet.Ele-ctrophoretic analyses was used to test hemoglobin and serum proteins.The results showed that the erythrocyte count, hematocrit, total blood volume and amount of hemoglobin of yaks from Naqu county were significantly higher than those of yaks from Linzhi county . The mean corpuscular volume ( MCV ) and mean corpuscular hemoglobin contents ( MCH ) of yaks from Naqu county were smaller to those of yaks from Linzhi county. A type of hemoglobin ( A3 ) existed only in yaks from Naqu county and amount of hemoglobin ( A3 ) in male was much higher than in female (p<0.001) .This article suggested that the variant hemoglobin ( A3 ) resulted mainly from high altitude and low oxygen pressure.