+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Factors associated with intramammary infection in dairy cows caused by coagulase-negative staphylococci, Staphylococcus aureus, Streptococcus uberis, Streptococcus dysgalactiae, Corynebacterium bovis, or Escherichia coli

Factors associated with intramammary infection in dairy cows caused by coagulase-negative staphylococci, Staphylococcus aureus, Streptococcus uberis, Streptococcus dysgalactiae, Corynebacterium bovis, or Escherichia coli

Journal of Dairy Science 100(1): 493-503

The aim of this study was to determine risk factors for bovine intramammary infection (IMI) associated with the most common bacterial species in Finland. Large databases of the Finnish milk-recording system and results of microbiological analyses of mastitic milk samples from Valio Ltd. (Helsinki, Finland) were analyzed. The study group comprised 29,969 cows with IMI from 4,173 dairy herds. A cow with a quarter milk sample in which DNA of target species was detected in the PathoProof Mastitis PCR Assay (Thermo Fisher Scientific, Waltham, MA) was determined to have IMI. Only cows with IMI caused by the 6 most common pathogens or groups of pathogens, coagulase-negative staphylococci (CNS), Staphylococcus aureus, Streptococcus uberis, Streptococcus dysgalactiae, Corynebacterium bovis, and Escherichia coli, were included. The control group comprised 160,176 IMI-free cows from the same herds as the study group. A multilevel logistic regression model was used to study herd- and cow-specific risk factors for incidence of IMI. Pathogen-specific results confirmed those of earlier studies, specifically that increasing parity increases prevalence of IMI regardless of causative pathogen. Holsteins were more susceptible to IMI than Nordic Reds except when the causative pathogen was CNS. Occurrence of IMI caused by C. bovis was not related to milk yield, in contrast to IMI caused by all other pathogens investigated. Organic milk production was associated with IMI only when the causative pathogen of IMI was Staph. aureus; Staph. aureus IMI was more likely to occur in conventional than in organic production. Cows in older freestall barns with parlor milking had an increased probability of contracting an IMI compared with cows in tiestall barns or in new freestall barns with automatic milking. This was the case for all IMI, except those caused by CNS, the prevalence of which was not associated with the milking system, and IMI caused by Staph. aureus, which was most common in cows housed in tiestall barns. A better breeding index for milk somatic cell count was associated with decreased occurrence of IMI, indicating that breeding for improved udder health has been successful in reducing the incidence of IMI caused by the most common pathogens in Finland. In the Finnish dairy sector, the importance of other measures to control IMI will increase as the Holstein breed progressively takes the place of the Nordic Red breed. Attention should be paid to hygiene and cleanliness, especially in old freestall barns. Based on our results, the increasing prevalence of automatic milking is not a reason for special concern.

Please choose payment method:

(PDF emailed within 0-6 h: $19.90)

Accession: 059729262

Download citation: RISBibTeXText

PMID: 28341052

DOI: 10.3168/jds.2016-11465

Related references

Intramammary infections with the contagious Staphylococcus aureus genotype B in Swiss dairy cows are associated with low prevalence of coagulase-negative staphylococci and Streptococcus spp. Veterinary Journal 188(3): 313-317, 2011

Antimicrobial resistance in Staphylococcus aureus, Streptococcus uberis and Streptococcus dysgalactiae from dairy cows with mastitis. New Zealand Veterinary Journal 62(2): 68-76, 2014

Peripartum infection with Streptococcus uberis but not coagulase-negative staphylococci reduced milk production in primiparous cows. Journal of Dairy Science 96(1): 158-164, 2013

Udder infections with Staphylococcus aureus, Streptococcus dysgalactiae, and Streptococcus uberis at calving in dairy herds with suboptimal udder health. Journal of Dairy Science 99(3): 2102-2117, 2016

Multiplex polymerase chain reaction as a mastitis screening test for Staphylococcus aureus, Streptococcus agalactiae, Streptococcus dysgalactiae and Streptococcus uberis in bulk milk samples. Journal of Dairy Research 70(2): 149-155, 2003

Efficacy of vaccination on Staphylococcus aureus and coagulase-negative staphylococci intramammary infection dynamics in 2 dairy herds. Journal of Dairy Science 97(8): 5250-5264, 2014

Inflammatory changes during experimental bovine mastitis induced by Staphylococcus aureus, Streptococcus dysgalactiae and Streptococcus uberis. Zentralblatt für Veterinarmedizin. Reihe A 34(8): 574-581, 1987

Short communication: Antimicrobial efficacy of intramammary treatment with a novel biphenomycin compound against Staphylococcus aureus, Streptococcus uberis, and Escherichia coli-induced mouse mastitis. Journal of Dairy Science 96(11): 7082-7087, 2013

Antimicrobial sensitivity of Staphylococcus aureus, Streptococcus dysgalactiae and Streptococcus uberis strains isolated from bovine mastitic milk. Proceedings of V International symposium on mastitis control: 283-297, 1985

Experimental infection of the bovine mammary glands during the dry period Staphylococcus epidermidis, Streptococcus dysgalactiae, Escherichia coli, and Staphylococcus aureus. Annual meeting National Mastitis Council Inc: 1st) 112-124, 1982

Quarter- and cow-level risk factors for intramammary infection with coagulase-negative staphylococci species in Swiss dairy cows. Journal of Dairy Science 100(7): 5653-5663, 2017

The efficacy of teat dips of differing persistence on teat skin in preventing intramammary infection by Streptococcus uberis and Escherichia coli in dry cows. British Veterinary Journal 136(6): 574-579, 1980

Detection of new and persistent Streptococcus uberis and Streptococcus dysgalactiae intramammary infections by polymerase chain reaction-based DNA fingerprinting. Fems Microbiology Letters 160(1): 69-73, 1998

Effect of cooling during the dry period on immune response after Streptococcus uberis intramammary infection challenge of dairy cows. Journal of Dairy Science 97(12): 7426-7436, 2014

Sensitivity of streptococcus agalactiae streptococcus uberis and staphylococcus aureus isolated from milk of cows with mastitis to antibiotics. Medycyna Weterynaryjna 41(12): 719-720, 1985