[Enzymatic profile of uterine secretions of cows during estraus cycle].

The uterine secretions of 20 bovine females have been studied and the activity of the following five enzymes has been evaluated: aldolase, glucose-t-phosphodeshydrogenase (G-6-PDH), sorbitol deshydrogenase, glutamic pyruvic transminase. Significant cyclic variations have been observed for aldolase and G-6-PDH, aldolase activity being maximum during the estrogenic phase of the cycle whereas G-6-PDH activity has been more important during the progesteronic phase. These results indicate a significant uterine metabolic activity during the different phases of the reproduction processes.