牦牛、藏黄牛低氧适应血液生理表征研究

发布时间：2019-01-12 06:25

【摘要】：为了研究牦牛、藏黄牛低氧适应血液生理表征,对滇藏线4个海拔246头牛(1 000 m的红河黄牛、屏边黄牛,2 000 m的丽江玉龙黄牛,3 000 m的德钦佛山黄牛、迪庆黄牛、迪庆牦牛,5 000 m的措美牦牛)血液生理指标、血流变指标进行了测定。结果表明:藏黄牛通过增加红细胞平均体积、红细胞平均血红蛋白含量和红细胞平均血红蛋白浓度来适应低氧环境;而牦牛通过增加血红蛋白含量、红细胞数、血细胞比容来适应低氧环境。3 000 m藏黄牛全血黏度趋于恶化,但其红细胞变形性增强,具有较低的血浆黏度(1.64 m Pa·s)、红细胞内黏度(0.66 m Pa·s)和纤维蛋白原含量(3.62 g/L),可有效地降低全血黏度增高带来的不良影响。3 000 m牦牛具有较高的全血黏度和血流阻,较低的红细胞聚集性和较低的血浆黏度(1.23 m Pa·s)、红细胞内黏度(0.49 m Pa·s)、纤维蛋白原含量(2.70 g/L)、屈服应力(4.30 m Pa),可有效地降低全血黏度和血流阻增大带来的不良影响;5 000 m牦牛与3 000 m牦牛相比,具有更高的红细胞聚集性和血浆黏度(1.83 m Pa·s)、红细胞内黏度(0.73 m Pa·s)、纤维蛋白原含量(4.02 g/L)、屈服应力(5.44 m Pa),但其全血黏度、血流阻降低,有效地降低了红细胞聚集性恶化、血浆黏度升高带来的不良影响。说明牦牛和藏黄牛可能有着各自的低氧适应血液生理表征。
[Abstract]:In order to study the hypoxic physiological characteristics of yak and Tibetan cattle, 246 cattle (1 000 m Honghe, Pingbian, 2 000 m Lijiang Yulong, 3 000 m Dachenfushan and Diqing yellow cattle) in Yunnan Tibetan line were studied. The indexes of blood physiology and hemorheology of Diqing yak and Cuomei yak (5 000 m) were determined. The results showed that Tibetan yellow cattle adapt to hypoxia by increasing the mean volume of red blood cell, the average hemoglobin content of red blood cell and the average hemoglobin concentration of red blood cell. However, yak adapted to hypoxia by increasing hemoglobin content, erythrocyte number and specific volume of blood cells. The whole blood viscosity of 3 000 m Tibetan cattle tended to deteriorate, but its erythrocyte deformability was enhanced and the plasma viscosity was lower (1. 64 m Pa s),). Intraerythrocyte viscosity (0.66 m Pa s) and fibrinogen content (3.62 g / L) could effectively reduce the adverse effects of increased whole blood viscosity. 3 000 m yak had higher whole blood viscosity and blood flow resistance. Lower erythrocyte aggregation and lower plasma viscosity (1.23 m Pa s), intraerythrocyte viscosity (0.49 m Pa s), fibrinogen content (2.70 g / L), yield stress (4.30 m Pa),) Can effectively reduce the whole blood viscosity and blood flow resistance caused by the increase of adverse effects; The erythrocyte aggregation and plasma viscosity of 5 000 m yak were higher than that of 3 000 m yak (1. 83 m Pa s),) (0. 73 m Pa s), fibrinogen content (4. 02 g / L). The yield stress (5.44 m Pa),) decreased the whole blood viscosity and blood flow resistance, effectively reduced the aggravation of erythrocyte aggregation and the adverse effect of increased plasma viscosity. It is suggested that yak and Tibetan yellow cattle may have their own hypoxic adaptation to blood physiological characteristics.
【作者单位】： 云南农业大学动物科技学院;云南农业职业技术学院;
【分类号】：S823.4+6;;S854.4+3
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本文编号：2407471