Gabris J, Mattová J
Vet Med (Praha). 1985 Mar;30(3):141-8.
A significantly lower alkaline phosphatase activity was recorded in the arterial blood of cows with higher milk efficiency. They also had higher sugar contents in their blood: highly significantly in arterial blood and significantly in venous blood after milking. As to the other blood components, the differences are low and insignificant. A significant positive relationship between the daily milk yield and the content of ash in blood (mainly in venous blood before milking), highly significant positive relationship between protein content in arterial blood and daily milk yield, and significant to highly significant negative relationship between the activity of alkaline phosphatase in arterial and venous blood before milking and the level of gamma-globulins in arterial blood were recorded in the group of cows with higher milk output. In the group of cows with lower milk production, significant to highly significant negative relationships were obtained between protein content in blood and the daily milk yield (in arterial and venous blood before milking).
产奶效率较高的奶牛动脉血中碱性磷酸酶活性显著降低。它们血液中的糖分含量也较高：动脉血中极显著升高，挤奶后静脉血中显著升高。至于其他血液成分，差异较小且不显著。在产奶量较高的奶牛组中，记录到日产奶量与血液中灰分含量（主要是挤奶前的静脉血）之间存在显著正相关，动脉血中蛋白质含量与日产奶量之间存在极显著正相关，挤奶前动脉血和静脉血中碱性磷酸酶活性与动脉血中γ-球蛋白水平之间存在显著至极显著负相关。在产奶量较低的奶牛组中，血液中蛋白质含量与日产奶量（挤奶前的动脉血和静脉血）之间存在显著至极显著负相关。
