The role of obstetrical diseases in the development of subclinical metritis

Abstract

The results of the dependence of obstetric diseases of cows in the occurrence of subclinical abortions against the background of the development of metritis under the influence of mycotoxins are given. Subclinical metritis is a fairly common phenomenon in cows, which causes significant economic losses. At the same time, the number of subclinical metritis in cows correlates with the number of obstetric pathology. Due to the negative impact of mycotoxins, in particular zearalenone, the balance of sex hormones is disturbed, which creates conditions for the development of saprophytic microflora in the organs of the reproductive system of cows. At the same time, deoxynivalenol helps to reduce the resistance of the cow's body in general and mucous membranes, in particular, which contributes to the development of inflammatory processes in the uterus. These processes are often subclinical. The aim of the work was to find out the role of obstetric diseases in the development of subclinical metritis and to develop clinical and prognostic tests for the occurrence of metritis and the basis for the analysis of obstetric pathology. The spread of obstetric pathology was established depending on the way cows are kept. Thus, in farms where cows were kept on tethers, the number of obstetric pathologies was 15.5 times higher. However, the number of inflammatory processes in the organs of the reproductive system in such farms was lower by 12 %. A decrease in the level of T- and B-lymphocytes in the blood and suppression of their functional activity was established, which is manifested by a decrease in the level of immunoglobulin G and has a significant effect on the increase in the frequency of subclinical abortions. The dependence of the reproductive capacity of cows on the frequency of subclinical and chronic inflammatory processes of the reproductive organs, which occur against the background of mycotoxicosis, was established. The influence of mycotoxins on the functioning of the ovaries and uterus was studied, and an increase in the number of such cases was established in farms with tethered cows. The correlation between the contamination of cow feed and the reduction of fertilization in cows was found. An increase in the number of subclinical abortions under the influence of zearalenone, which is found in large quantities in feed, has been established. The dependence of ovarian disorders on increasing productivity in cows was investigated.