Prevalence of pathogens in milk samples of dairy cows with clinical mastitis and in heifers at first parturition

B.-A. Tenhagen; I. Hansen; A. Reinecke; W. Heuwieser

Prevalence of pathogens in milk samples of dairy cows with clinical mastitis and in heifers at first parturition

In: Mastitis control

Authors:

B.-A. Tenhagen

B.-A. Tenhagen Freie Universität Berlin, Tierklinik für Fortpflanzung, Königsweg 65, Hs. 27, 14163 Berlin, Germany Corresponding author: Bernd-Alois.Tenhagen@Bfr.bund.de

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I. Hansen

I. Hansen Freie Universität Berlin, Tierklinik für Fortpflanzung, Königsweg 65, Hs. 27, 14163 Berlin, Germany Corresponding author: Bernd-Alois.Tenhagen@Bfr.bund.de

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A. Reinecke

A. Reinecke Freie Universität Berlin, Tierklinik für Fortpflanzung, Königsweg 65, Hs. 27, 14163 Berlin, Germany Corresponding author: Bernd-Alois.Tenhagen@Bfr.bund.de

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, and

W. Heuwieser

W. Heuwieser Freie Universität Berlin, Tierklinik für Fortpflanzung, Königsweg 65, Hs. 27, 14163 Berlin, Germany Corresponding author: Bernd-Alois.Tenhagen@Bfr.bund.de

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Type:: Chapter

Pages:: 63–69

DOI:: https://doi.org/10.3920/9789086866496_006

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Prevalence of mastitis pathogens in milk samples from dairy cows and heifers was studied over a period of one year (Aug 2005 to Aug 2006) in ten dairy herds in Germany. Milk samples (n=8240) were collected from heifers without clinical mastitis at parturition (n=6915), from primiparous cows with clinical mastitis (n=751) and from older cows with clinical mastitis (n=574). Coagulase negative staphylococci (CNS) were the predominant group of bacteria isolated (46.8 % of samples) from clinically healthy quarters of primiparous cows around parturition, followed by streptococci (12.6%), E. coli (4.7%) and S. aureus (4.0%). 33.0 % of samples were negative on culture (Range on farm level 12.0 to 46.4 %). In cases of clinical mastitis in primiparous and older cows, streptococci were the predominant finding (32.1 and 39.2 %), followed by CNS (27.4 and 16.4%), coliforms (10.3 and 13.1%) and S. aureus (10.0 and 11.7%). Negative results were obtained from 21.3 % (range 0.0 to 30.6 %) and 19.5 % (range 0.0 to 32.6 %) of these samples. Results indicated substantial differences in the prevalence of pathogens between herds. There was a positive within herd correlation between the monthly prevalences for S. dysgalactiae in the three groups of samples. This correlation was also found between clinical samples of primiparous and older cows for S. aureus. Other pathogens were not correlated. Besides herd, prevalence of pathogens was influenced by parity, type of sample and season.

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Mastitis control

From science to practice

E-Book ISBN:: 9789086866496

Publisher:: Wageningen Academic

Print Publication Date:: 30 Oct 2008

Subjects
- Life Sciences

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Prevalence of pathogens in milk samples of dairy cows with clinical mastitis and in heifers at first parturition

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Mastitis control

From science to practice

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