Pathogens Transmission and Cytological Composition of Cow’s Milk

DOI: 10.26650/actavet.2019.19004The article deals with the data on thequantitative and species composition of somatic cells in milk of cows of Blackspotted breed. In the main period of lactation, the number of somatic cells inmilk is up to 100 ths/cm3. In cases of subclinical mastitis, the somatic cellcount in the udder secretion increases to 30-35 mL/cm3. However, it should benoted that in the case of subclinical mastitis their number increases inthousands times. Thus, studying the species composition of somatic cells andmorphological structure of basophils in milk of cows with subclinical mastitis,we did not find any relationship between their number, morphological structureand period of disease. Results of our study show that pathogenic staphylococci(Staphylococcus aureus) were the cause of subclinical mastitis in 67-73% ofcases. Streptococcus agalactiae caused the disease in about 20% of all cases.The results of the study of bacterial contamination of the udder skin showedthat regardless of the animal age, pathogens of subclinical mastitis are alwayspresent on the udder skin. The main carrier of the subclinical mastitispathogens from the sick animal to the healthy one is the rubber of milkingcups. Cite this article as: Shkromada, O., Skliar,O., Pikhtirova, A., Inessa, G., 2019. Pathogens transmission and cytologicalcomposition of cow’s milk. Acta Vet Eurasia 45, 73-79.