Correction of reproductive and productive qualities of cattle with biological products of the Prevention and Salus series

The purpose of this work was the veterinary and hygienic justification of immunoprophylaxis of the body of cattle with new generation biopreparations of the Prevention and Salus series in the realization of reproductive and productive qualities. The research work was carried out in the period from 2007 to 2023 and consisted of 3 stages. We have developed complex biological preparations Prevention-N-C, Prevention-N-E, Salus-PE and Salus-EG based on a polysaccharide complex of yeast cells and antibacterial components belonging to the group of immunotropic agents, and tested on cattle in three farms. It has been established that the positive effect of using the developed drugs is achieved by activating the cellular and humoral links of nonspecific resistance of the body, and it is more pronounced in Salus-PE. The proposed biologics prevent transport stress and contribute to the realization of the bioresource potential of the reproductive and productive qualities of imported heifers, with a more pronounced corresponding Salus-EG effect. It should be noted that Salus-PE and Salus-EG biologics prevent postpartum complications, improve the reproductive and productive qualities of dairy cows, due to the activation of hematopoiesis, metabolism, selective mobilization of aminotransferases and factors of cellular and humoral links of nonspecific resistance of the body, with a more pronounced corresponding effect of Salus-EG.