Tomicki Z, Pomarańska-Lazuka W
Pol Arch Weter. 1982;23(2):63-72.
The experiment was conducted in order to determine the influence of fodder from pastures which were intensely, though to a different degree, fertilized with nitrogen (420 and 840 kg N/ha) year on the AspAT and AlAT activity in the plasma of cows. The first aminotransferase activity determination was made at the end of the second year of the feeding experiment. A significant increase of AspAT activity in the plasma indicated that such intensive fertilization was and unfavorable influence on liver activity. Increased AspAT activity was retained from the end of 1972 up to the middle of 1974, and after that the values decreased to the reference value level and remained so till the end of this experiment, that is to the year 1975. AlAT activity did not change significantly throughout the experimental period. Both AspAT and AlAT show small seasonal changes.
进行该实验是为了确定来自过去施用不同程度氮肥（420和840千克氮/公顷）的牧场饲料对奶牛血浆中天冬氨酸氨基转移酶（AspAT）和丙氨酸氨基转移酶（AlAT）活性的影响。在饲养实验的第二年结束时进行了首次氨基转移酶活性测定。血浆中AspAT活性的显著增加表明这种密集施肥对肝脏活性有不利影响。增加的AspAT活性从1972年底一直保持到1974年年中，之后数值降至参考值水平，并一直保持到该实验结束，即1975年。在整个实验期间，AlAT活性没有显著变化。AspAT和AlAT都显示出微小的季节性变化。
