Occurrence of mastitis pathogens in relation to somatic cells

161 cows from 4 farms were examined. The suspect animals were selected according to viscosity test, clinical symptoms and somatic cell count (SCC). The most frequently isolated was Ent. faecalis (n = 20), followed by S. aureus (n = 6) and St. uberis (n = 5). There was positive occurrence of bacteria genus Staphylococcus and Enterococcus at lower SCC (50 ths.ml-1) and at higher SCC (> 300 ths.ml-1) bacteria genus Streptococcus, Enterobacter and E. coli. Differences in SCC were significant (P < 0.001) in negative samples xg 131 SCC versus 491 for positive, 611 for staphylococci and 464 ths.ml-1 for other positive. SCC discrimination limit for likelihood of pathogen occurrence estimation was calculated. This limit 174 ths.ml-1 could be recommended for practical use to apply preventive or curative measures.

Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis. 2013, 61(5): 1505–1511. ISSN 1211-8516. [Fulltext PDF]

Tvůrci: 
Tvůrci externí: 
Marcela Vyletělová Klimešová, Oto Hanuš, Lucie Hasoňová, Petr Roubal, Ludmila Nejeschlebová

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