Oral Supplementation with Organically Modified Clinoptilolite During Prepartum Period Influences the Redox Status of Peripheral Blood and Colostrum of Primiparous Dairy Cows

Redox imbalance in peripartum period influences health of dairy cows and their foetus and, through the colostrum, health of new-born calves. Oxidative stress in cattle can be suppressed by dietary supplementation with natural minerals, and we investigated the effect of supplementation with organically modified clinoptilolite on redox status parameters in healthy pregnant primiparous dairy cows. Holstein cows were randomly assigned to receive daily oral drenching, with 1 L of water containing either 0 g/L (n = 14; control group) or 150 g/L of clinoptilolite (n = 17; supplemented group). Treatment lasted from 24 ± 4 days prior to parturition until 2 days postpartum (pp). Blood samples were collected on days 24 ± 4 (–24 D) and 4 ± 2 (–4 D) prior to parturition and on days 1 (+1 D), 2 (+2 D), and 7 (+7 D) pp, and colostrum were collected at 2, 12, 24 and 36 h pp. Total antioxidant capacity, lipid peroxides, and advanced oxidation protein products (AOPP) levels were determined in peripheral blood plasma, erythrocytes, and colostrum whey. The concentration of antioxidants in the peripheral blood of supplemented cows was increased by 41% and 19% on (+2 D) and (+7 D), respectively, while the concentration of lipid peroxides on (+7 D) was lowered by 57% compared with the control group. In addition, this supplementation increased erythrocyte AOPP level on (–4 D) 61%) and colostral lipid peroxides level (90%) at 24 h pp. The results of this study showed that applied short-term supplementation with clinoptilolite influences redox homeostasis and may contribute to effective adaptation of primiparous cows to redox imbalance in the peripartum period. Highlights Short-term dietary supplementation with clinoptilolite in the prepartum period modulates redox homeostasis of the dairy cows’ blood plasma. Short-term dietary supplementation with clinoptilolite contributes to adaptation of dairy cows to redox imbalance in the peripartum period. Short-term dietary supplementation with clinoptilolite increase the level of lipid peroxides in colostrum of dairy cows.