Indicators of antioxidant protection of the body of dairy cows depending on the phase of lactation and physiological state

Relevance. Studies on the assessment of pro- and antioxidant status body productive animalsare relevant, since they are interconnected with health, state immune reproductive systems. There is a steadily growing information in field oxidative stress animal husbandry veterinary medicine, which indicates general importance defense impaired health productivity ruminants. need to translate this knowledge into practical proposals for livestock specialists veterinarians. Methods. In order study indicators protection dairy cows depending month lactation physiological state, following groups were formed conditions PZ Ladozhsky (Krasnodar district) winter period 2021: dry; lactating: 1 month; 2 months; 3 4 5 6–7 months. The determined blood studied animals: concentration ceruloplasmin, products reacting thiobarbituric acid, total content water-soluble antioxidants, status, activity serum. Results. results obtained indicate changes cows, lactation. By 5–6 months maximum levels accumulation LPO observed level ceruloplasmin decreases, maintenance overall carried out at expense other antioxidants. most significant parameters between dry lactating cows. will allow monitoring animals serve as database development reference values phase