A study of mastitis bacteria and herdmanagement practices to identify their relationship to high somatic cell counts in bulk tank milk

Fenlon, D.R.; Logue, D.N.; Gunn, J.; Wilson, Judith M.

doi:10.1016/s0007-1935(05)80059-4

Cited by 48 publications

(48 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Attention was also focused on the correlation between the incidence of subclinical or clinical mastitis and BTMSCC (Barkema et al, 1998b;McDougall, 2003;Lukas et al, 2005). Few authors concentrated on the culture findings of pathogens of the bovine mammary gland in BTMS and BTMSCC simultaneously (Fenlon et al, 1995;Jayarao et al, 2004;Olde Riekerink et al, 2006) as we did in the present study.…”

Section: Discussionmentioning

confidence: 80%

“…It indicates that S. aureus remains the principal mastitis pathogen under current conditions in the Czech Republic. Fenlon et al (1995) revealed a good correlation between the number of mastitis streptococci (S. agalactiae, S. dysgalactiae and S. uberis) found in bulk tank milk and the BTMSCC. Staphylococcus aureus was less significantly correlated to BTMSCC.…”

Section: Discussionmentioning

confidence: 84%

“…Staphylococcus aureus was less significantly correlated to BTMSCC. However we evaluated the samples in a different way than Fenlon et al (1995); we must say that the results obtained were comparable only for S. aureus. S. uberis alone was not a specific interest of Fenlon et al (1995).…”

Section: Discussionmentioning

confidence: 99%

“…In contrast, no standard is available for BTMS culturing for the detection of mastitis pathogen contamination. Various authors were used different media for this purpose (Fenlon et al, 1995;Benda and Vyletelova, 1997a,b;Jayarao and Wang, 1999;Hayes et al, 2001;Sawant et al, 2002;Jayarao et al, 2004;Zadoks et al, 2004;Olde Riekerink et al, 2006). We have used culture media similar to the recommendation of the National Mastitis Council (2005) for the purpose of this study.…”

Section: Discussionmentioning

confidence: 99%

See 3 more Smart Citations

Bulk tank milk somatic cell count and sources of raw milk contamination with mastitis pathogens

Rysanek¹,

Babák²,

Zouharová³

2007

Vet. Med. - Czech

View full text Add to dashboard Cite

The objective of this study was to probe the relationship between prevalence of selected principal mastitis pathogens and somatic cell counts in bulk tank milk samples. The sources of milk contamination were evaluated. The samples were collected from 298 dairy herds (with approximately 32 000 dairy cows). Only 48.3% of the bulk tank milk samples were free of contamination of pathogens of interest. Approximately 38.9% of the milk samples were contaminated with only one, 12.4% with two and 0.3% with three pathogens. The arithmetic mean of logarithmically transformed data of bulk tank milk somatic cell count rise in order: pathogen free, Pseudomonas aeruginosa, Streptococcus uberis, Escherichia coli and Staphylococcus aureus (5.381; 5.413; 5.495; 5.518; 5.563, respectively). The arithmetic mean differences between bulk tank milk somatic cell counts in pathogen-free and single-pathogen contaminated samples have revealed a significance for the Escherichia coli and Staphylococcus aureus groups (P < 0.01). Using binary logistic regression, a statistically highly significant relationship (P < 0.001) has been found between the number of contaminations of bulk tank milk samples with mastitis pathogens and bulk tank milk somatic cell counts. The relationship allows the determination of the probability of finding relevant mastitis pathogens in bulk tank milk samples with different levels of bulk tank milk SCC. A 63% probability can be defined at a cell count level of 400 000/ml and 20% at a cell count level of 100 000/ml. Analysis may reveal the potential sources of the bulk tank milk sample contamination, i.e. infected mammary glands or the environment. The presence of high levels of contamination along with a low bulk tank SCC may suggest an environmental source of contamination. The study clarified that a potential source of bulk tank milk contamination by relevant pathogens (the environment or the mammary gland) may be elucidated and the probability of the contamination of bulk tank milk samples with mastitis pathogens predicted by the analysis of relationship between the bulk tank milk somatic cell counts and the number of mastitis pathogen contaminations.

show abstract

Section: Discussionmentioning

confidence: 80%

Section: Discussionmentioning

confidence: 84%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Bulk tank milk somatic cell count and sources of raw milk contamination with mastitis pathogens

Rysanek¹,

Babák²,

Zouharová³

2007

Vet. Med. - Czech

View full text Add to dashboard Cite

show abstract

“…The significance of bovine mammary gland pathogens as a factor increasing the bacterial count in herd bulk milk has been analysed before (Hayes et al, 2001;Jayarao et al, 2004;Zadoks et al, 2004;Rysanek et al, 2009a;Rysanek et al, 2009b). A significant correlation was found between the number of mastitis streptococci (Streptococcus uberis, Streptococcus agalactiae, Streptococcus dysgalactiae) and the somatic cell count which is the most widely accepted standard for measuring udder health and milk quality (Fenlon et al, 1995;Bagnicka et al, 2011;Borne et al, 2011). S. uberis is one of the most important environmental pathogen which causes mastitis in dairy cows, particularly *Corresponding author.…”

Section: Introductionmentioning

confidence: 99%

Effect of Streptococcus uberis infections on cell population of bovine mammary gland

Sláma¹,

Havlicek²,

Skládanka³

et al. 2012

Afr. J. Microbiol. Res.

View full text Add to dashboard Cite

Streptococcal bacteria are one of the most important pathogens causing different type of bovine mastitis. In this respect, it is very important to study effect of streptococcal infections on cell populations of bovine mammary gland to improve knowledge how to prevent and treat streptococcal infections of bovine mammary gland. Streptococcal bacteria can affect different cell processes, for example, programmed cell death (apoptosis) and expression of some cell receptors on leukocytes such as neutrophils, lymphocytes and macrophages of mammary gland. This review summarizes information about effect of streptococcal infections on leukocytes of bovine mammary gland.

show abstract

Microbiological Considerations Related to Dairy Processing

Schmidt

2015

Dairy Processing and Quality Assurance

View full text Add to dashboard Cite

A study of mastitis bacteria and herdmanagement practices to identify their relationship to high somatic cell counts in bulk tank milk

Cited by 48 publications

References 5 publications

Bulk tank milk somatic cell count and sources of raw milk contamination with mastitis pathogens

Bulk tank milk somatic cell count and sources of raw milk contamination with mastitis pathogens

Effect of Streptococcus uberis infections on cell population of bovine mammary gland

Microbiological Considerations Related to Dairy Processing

Contact Info

Product

Resources

About