Abstract
The article presents the results of studies of the dependence of cows’ milk productivity on the level of lipid peroxidation and antioxidant defense in their body. For the experiment two groups of lactating cows were formed, 10 animals each: group 1 – livestock with a high concentration of lipid peroxidation products in the blood and a low level of antioxidants; group 2 – livestock with the values of these indicators within the reference interval. The results of the research indicate that in animals of the group 1 the average daily milk yield was lower by 9.9% relative to the values of the group 2. According to the quality characteristics and safety fac-tors of milk in cows with an imbalance in the LPO-AOD system relative to the group of animals with normal data, a decrease in the concentration of protein and fat was recorded with an increase in the concentration of somatic cells. Taking it into account, it seems relevant to use antioxidant substances for highly productive dairy cattle in order to increase milk productivity, improve the quality and safety of livestock products.
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