Some aspects of antioxidant protection in the body of young cattle

Abstract

Relevance. Of scientific interest are studies to assess the pro- and antioxidant status of the body of productive animals with age, since they are interconnected with health, the state of the immune and reproductive systems.Methods. In order to study the indicators of antioxidant protection in the body of young cattle of different ages in the conditions of the PZ «Ladozhsky» (Krasnodar district), the following groups of animals were formed in the winter period of 2022: young animals at the age of 1 month (n = 15), 3–4 months (n = 19), young animals 6–7 months old (n = 14), heifers (n = 16). The following indicators were determined in the blood of the studied animals: the concentration of ceruloplasmin (CP), products reacting with thiobarbituric acid (TBA-AP), the total content of water-soluble antioxidants (TAWSA), the total antioxidant status (TAS), peroxidase activity, the ratio of TBA-AP/CP, metabolic processes and hematological indicators were calculated. Correlations between the determined indicators were calculated.Results. The results obtained indicate changes in the LPO and AOD indicators depending on age and physiological state. A significant increase in the concentration of TBA-AP in the blood of young animals 6–7 months old and heifers, compared with analogues of 1 and 3–4 months of age, indicates the accumulation of lipid peroxidation products with age. The decrease in the AOP level in the 6-month-old group of animals is also indicated by the minimum concentration of TAWSA and the trend towards a decrease in the total antioxidant status and peroxidase activity. Due to the high level of ceruloplasmin, the ratio of TBA to CP was at the level of other groups. The age of the animals had a significant effect (p ≤ 0.001) on the content of TBA-AP, ceruloplasmin, TAWSA, and the overall antioxidant status. SLE and TBA-AP are significant markers of the state of LPO and AOP in the body. The results obtained will allow monitoring the health status of animals and will help to provide timely preventive measures that increase the adaptive capabilities of young animals and the most complete realization of the genetic potential of productivity.