BREED OF CATTLE IN RELATION TO OCCURRENCE OF S. AUREUS AND SCC
BREED OF CATTLE IN RELATION TO OCCURRENCE OF STAPHYLOCOCCUS AUREUS AND OTHER MASTITIS PATHOGENS AND SOMATIC CELL COUNT
Marcela Klimesova-Vyletelova1, Oto Hanus1, Ales Dufek2, Irena Nemeckova1, Ludmila Nejeschlebova1, Jiri Horacek3, Antonin Ponizil3
1Dairy Research Institute, Ke Dvoru 12a, Prague, Czech Republic
2Agriresearch Rapotín, Výzkumníků 267, Vikýřovice, Czech Republic
3Agritec Plant Research, Zemědělská 16, Šumperk, Czech Republic
Corresponding author: marcela.vyletelova@seznam.cz
Abbreviated title: Cattle breed and mastitis
Abstract
Influence of breed on somatic cell count (SCC) and occurrence of particular species was evaluated. The samples were collected both from farms with Holstein (H; 10 farms; 365 cows) breeding and from farms with Czech Fleckvieh (CF; 2 farms; 67 cows). The animals were investigated on occurrence of mastitis pathogens and SCC. The obtained dataset was statisticaly evaluated by analysis of variance to test main effects on logSCC with following testing of bacterial species impact. The occurrence of mastitis pathogens was compared between Holstein and Czech Fleckvieh. The relationship between SCC and incidence of isolated mastitis pathogens was determined as well. It is evident that more positive cows were in breed H compared to CF (H 41.6%; CF 26.9%). The most frequent mastitis pathogens in H breed were S. aureus (13.7%), S. uberis (9.6%), S. haemolyticus (8.5%),. S agalactiae (6.9%), E. faecalis (2.5%) and E. faecium (0.8%), while only S. uberis, (19.4%), S. haemolyticus (6%) and S. aureus (1.5%) were found in breed CF. SCC results showed the higher SCC in H breed compared to CF in case of both negative and positive cows as well (negative results = 192 H and 128 CF; positive results = 752 H and 282 103×ml-1 CF) and significant impact of breed on logSCC (F=6.4, P=0.012). The significant effects of bacterial species were confirmed (F=13.63, P<0.001). Multiple comparison among groups of bacterial species showed significant differences between NEG and SAU, SAG, SUB (P=0.012, P<0.001, P<0.001, resp.). Differences between NEG and SHA or ENT were not significant (P=0.124, P=0.816, respectively).
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