Medycyna Wet. 67 (3), 190-193, 2011
| Smulski S., Malinowski E., Kaczmarowski M., Lassa H. |
| Occurrence, forms and etiologic agents of mastitis in Poland depending on size of farm |
| The aim of the study was to characterize the health status and occurrence of pathological changes in mammary glands as well as to isolate etiological agents of mastitis in different herds. A single clinical examination of the udders of 3673 cows and bacteriological examination of 13,778 aseptically collected quarter milk samples were performed in 32 farms. Clinical forms of mastitis were found in 1.9% to 6.5% of quarters. Subclinical forms of mastitis ranged from 27.7 to 43.4%. Different degrees of damage to the teat end and teat canal were observed in 1.2 to 4.4% of quarters examined. Staphylococcus aureus was isolated from milk in 13.0% of samples, coagulase-negative staphylococci in 18.9%, environmental streptococci in 3.2%, Str. agalactiae in 0.3% and Str. dysgalactiae in 0.5%. In conclusion it can be stated that clinical and subclinical forms of udder inflammations are still a serious problem in some farms in Poland. In bigger farms the most important problem are infections caused by Staphylococcus spp. Environmental streptococci (mostly Str. uberis) and CNS dominate in smaller farms. Interesting is the low percentage of Str.agalactiae regardless of the size of the farm. |
| Key words: cows, mammary glands, health status. |