The researches that have been conducted to study the diagnostic information value of the device electronic nose for obstetric pathology in high yielding cows. It has been established that, based on the detection of cervicalvaginal mucus obtained from healthy cows and cows with metritis, the device, using an array of gas sensors, distinguishes highly volatile compounds of chemical substances characteristic of the inflammatory process. Its use makes it possible to establish a diagnosis at the beginning of the development of pathology. And used as a screening method for predicting and early diagnosis of postpartum metritis, as well as for assessing the efficacy of ongoing therapeutic measures. This allows significantly save time on clinical and laboratory research.

The article presents the material for studying the condition of newborn cattle and mother cows, depending on the pregnancy pattern. In the cows with a complicated pregnancy, a disorder of involution processes is diagnosed after calving. In these animals, especially with fetal growth restriction syndrome and late toxicosis of pregnancy, pathology of calving and the postpartum period is diagnosed by 1.8-2.57 times more often. In these animals, the duration of lochia secretion is longer by 3.6-9.0 days, the period of completion of the involution processes is 5.0-10.4 days, and the duration of the period from calving to fertilization is 8.1-30.3 days. In the calves born from the cows with FGRS complicated by gestosis, body weight is by 15.8% lower, the time for the manifestation of a confident standing posture is by 19.8 minutes longer, and the sucking reflex is by 22.4 minutes longer, indicating their reduced viability.