Skrzypczak W F
Katedra Fizjologii Zwierzat Wydziału Zootechnicznego AR w Szczecinie.
Pol Arch Weter. 1989;29(1-2):23-33.
The capability of the kidneys of 12 bull-calves at the age of 7-35 days of life to save electrolytes Na, K, Cl, Ca, Mg, Pn were examined. The examinations were made with the clearance methods using inulin as the indicator of the glomerular filtration of plasma. It was proved, that as the calves grow and develop, there arise changes in the glomerular filtration, tubular resorption and in the excretion of the examined minerals in urine. There was observed, at the same time, the relatively stabile level of these electrolytes in blood. It shows the functional development of the calves kidneys and the fact, that in the proper environmental conditions and particularly at the proper feeding, the kidneys are able to maintain the favorable, from the point of view of the internal balance and the needs of the developing organism, level of the electrolytes.
对12头7至35日龄公牛犊的肾脏保存电解质钠、钾、氯、钙、镁、磷的能力进行了检测。检测采用清除率方法，以菊粉作为血浆肾小球滤过的指标。结果证明，随着犊牛的生长发育，肾小球滤过、肾小管重吸收以及所检测矿物质的尿排泄均发生变化。同时观察到，这些电解质在血液中的水平相对稳定。这表明犊牛肾脏的功能发育，以及在适宜的环境条件下，尤其是在适当饲养的情况下，肾脏能够从机体内部平衡和发育需求的角度维持电解质的良好水平这一事实。
