The Role of Oxidative Stress during Pregnancy on Obstetric Pathology Development in High-Yielding Dairy Cows

The study aimed to examine the processes of oxidative stress and their intensity depending on state antioxidant system in dairy cows. was conducted 2018-2019 territory Druzhba breeding factory (Voronezh region, Russia) involved 154 cows divided into 4 groups. Group 1 consisted healthy animals (n = 83). 2 contained with afterbirth retention 6). 3 included uterine subinvolution 49). comprised postpartum catarrhal-purulent endometritis 16). blood samples were taken from estimate content vitamin E, lipids, malonic aldehyde enzymes-catalases, reductase ferroxidase. concentration E groups found decrease (by 3.9-23.2%; 30.7±2.16-25.9±2.16 compared 31.9±1.68 ?M/L) within two months. level group higher than other after first month. In one month, its increased by 20.6% (1.11±0.09 35.4, 19.4 6.7%, respectively (P<0.01-0.001). exhibited differences indicate strong significance functional insufficiency protection during development pregnancy and, as a result, etiology pathogenesis parturient complications