Changes in oxidative stress markers in plasma of sows during periparturient period

The aim of the present study was to determine changes in oxidative status plasma sows during periparturient period using markers lipid and protein peroxidation intensity. Plasma from 12 pregnant gilts collected on days 14 1 before parturition 1, 7 postpartum used study. As indicators alterations status, concentrations thiobarbituric acid reactive substances (TBARS) sulphydryl groups (SH groups) were measured spectrophotometrically, as well bityrosine formylokinurenine determined by spectrofluorimetric method. Com-pared 14th day antepartum, concentration TBARS increased significantly then decreased after parturition. SH last postpartum. parturition, remained at this level first slightly These results indicate that sows, especially around oxidative/antioxidative balance is disturbed, which leads stress. Considering stress potentially harmful for mothers neonates, may be an important factor risk diseases occurring period.