Gabris J, Duran A
Vet Med (Praha). 1982;27(10):577-84.
Before and after milking the order of free amino acids was very much alike but differences were observed in amino acid content levels. After milking the venous blood of cows had less free amino acids than before milking; this testifies to their utilization for proteosynthesis in the udder, except for some glucoplastic amino acids whose content increased after milking. The changes in the content of free amino acids in the blood of cows before and after milking draw attention to the fact that blood-borne precursors are transformed in the udder.
挤奶前后游离氨基酸的顺序非常相似，但氨基酸含量水平存在差异。挤奶后奶牛的静脉血中游离氨基酸比挤奶前少；这证明它们在乳房中用于蛋白质合成，除了一些糖异生氨基酸，其含量在挤奶后有所增加。奶牛挤奶前后血液中游离氨基酸含量的变化让人注意到血源前体在乳房中发生转化这一事实。
