【摘要】：為了研究牦牛、藏黃牛低氧適應(yīng)血液生理表征,對(duì)滇藏線4個(gè)海拔246頭牛(1 000 m的紅河黃牛、屏邊黃牛,2 000 m的麗江玉龍黃牛,3 000 m的德欽佛山黃牛、迪慶黃牛、迪慶牦牛,5 000 m的措美牦牛)血液生理指標(biāo)、血流變指標(biāo)進(jìn)行了測(cè)定。結(jié)果表明:藏黃牛通過增加紅細(xì)胞平均體積、紅細(xì)胞平均血紅蛋白含量和紅細(xì)胞平均血紅蛋白濃度來適應(yīng)低氧環(huán)境;而牦牛通過增加血紅蛋白含量、紅細(xì)胞數(shù)、血細(xì)胞比容來適應(yīng)低氧環(huán)境。3 000 m藏黃牛全血黏度趨于惡化,但其紅細(xì)胞變形性增強(qiáng),具有較低的血漿黏度(1.64 m Pa·s)、紅細(xì)胞內(nèi)黏度(0.66 m Pa·s)和纖維蛋白原含量(3.62 g/L),可有效地降低全血黏度增高帶來的不良影響。3 000 m牦牛具有較高的全血黏度和血流阻,較低的紅細(xì)胞聚集性和較低的血漿黏度(1.23 m Pa·s)、紅細(xì)胞內(nèi)黏度(0.49 m Pa·s)、纖維蛋白原含量(2.70 g/L)、屈服應(yīng)力(4.30 m Pa),可有效地降低全血黏度和血流阻增大帶來的不良影響;5 000 m牦牛與3 000 m牦牛相比,具有更高的紅細(xì)胞聚集性和血漿黏度(1.83 m Pa·s)、紅細(xì)胞內(nèi)黏度(0.73 m Pa·s)、纖維蛋白原含量(4.02 g/L)、屈服應(yīng)力(5.44 m Pa),但其全血黏度、血流阻降低,有效地降低了紅細(xì)胞聚集性惡化、血漿黏度升高帶來的不良影響。說明牦牛和藏黃�？赡苡兄髯缘牡脱踹m應(yīng)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.
【作者單位】： 云南農(nóng)業(yè)大學(xué)動(dòng)物科技學(xué)院;云南農(nóng)業(yè)職業(yè)技術(shù)學(xué)院;
【分類號(hào)】：S823.4+6;;S854.4+3
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本文編號(hào)：2407471