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Abstract

Three hundred subclinically infected quarters of 259 Holstein cows infected with gram-positive bacteria were selected via quota sampling based on the California Mastitis Test (CMT) result and were divided randomly and equally into treatment and test groups. Quarters of test group (n=150 in 128...

Author(s)
Mohammadsadegh, M.
Publisher
Wiley, Oxford, UK
Citation
Journal of Veterinary Pharmacology and Therapeutics, 2018, 41, 1, pp 22-27
Abstract

The objectives of this study were to characterize the pathogen frequency and severity of clinical mastitis (CM) in 20 dairy herds of southeastern Brazil; and to determine the incidence rate of clinical mastitis (IRCM; overall and based on specific-pathogen groups) based on quarter time at risk and...

Author(s)
Tomazi, T.; Ferreira, G. C.; Orsi, A. M.; Gonçalves, J. L.; Ospina, P. A.; Nydam, D. V.; Moroni, P.; Santos, M. V. dos
Publisher
Elsevier B.V., Amsterdam, Netherlands
Citation
Preventive Veterinary Medicine, 2018, 161, pp 9-18
Abstract

Twenty-nine strains of mastitis pathogens were used to study the antibacterial activity of the cell-free supernatants (CFS) of 25 strains of Lactococcus lactis ssp. lactis. Out of the tested strains, only the CFS of L. lactis LL11 and SL153 were active, inhibiting and killing most of the pathogens. ...

Author(s)
Malvisi, M.; Stuknytė, M.; Magro, G.; Minozzi, G.; Giardini, A.; Noni, I. de; Piccinini, R.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2016, 99, 3, pp 2288-2296
Abstract

For more than 30 yr, a control plan for Streptococcus agalactiae and Staphylococcus aureus has been carried out in more than 1,500 dairy herds of the province of Brescia (northern Italy). From 2010 to 2011, the apparent prevalence of Strep. agalactiae has been relatively stable around 10%, but the...

Author(s)
Zanardi, G.; Caminiti, A.; Donne, G. delle; Moroni, P.; Santi, A.; Galletti, G.; Tamba, M.; Bolzoni, G.; Bertocchi, L.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2014, 97, 9, pp 5592-5598
Abstract

Mastitis is the most common infectious disease affecting dairy cattle; in addition, it remains the most economically important disease of dairy industries around the world. Streptococcus agalactiae, a contagious pathogen associated with subclinical mastitis, is highly infectious. This bacterium can ...

Author(s)
Elias, A. O.; Cortez, A.; Brandão, P. E.; Silva, R. C. da; Langoni, H.
Publisher
Elsevier Ltd, Oxford, UK
Citation
Research in Veterinary Science, 2012, 93, 1, pp 34-38
Abstract

Accurate identification of mastitis pathogens is often compromised when using conventional culture-based methods. Here, we report a novel, rapid assay tested for speciation of bacterial mastitis pathogens using high-resolution melt analysis (HRMA) of 16S rDNA sequences. Real-time PCR amplification...

Author(s)
Praseeda Ajitkumar; Barkema, H. W.; Buck, J. de
Publisher
Elsevier Ltd, Oxford, UK
Citation
Veterinary Microbiology, 2012, 155, 2/4, pp 332-340
Abstract

In this paper, we analyzed a very large field data set on intramammary infections (IMI) and the associated somatic cell count (SCC) in dairy cows. The objective of the study was to analyze the impact of coagulase-negative staphylococci (CNS) IMI on cow SCC, both mean and variability, and on the...

Author(s)
Schukken, Y. H.; González, R. N.; Tikofsky, L. L.; Schulte, H. F.; Santisteban, C. G.; Welcome, F. L.; Bennett, G. J.; Zurakowski, M. J.; Zadoks, R. N.
Publisher
Elsevier, Amsterdam, Netherlands
Citation
Veterinary Microbiology, 2009, 134, 1/2, pp 9-14
Abstract

Milk samples were collected from 482 cows with suspected clinical mastitis from 69 Dutch dairy farms. Compared with milk samples from individual udder quarters, culture of mixed samples from all 4 quarters detected 58% of Staphylococcus aureus, 65% of Streptococcus uberis, 87% of S. agalactiae and...

Author(s)
Morselt, M. L.; Lam, T. J. G. M.; Wuijckhuise, L. A. van; Franken, P.; Hartman, E. G.; Schukken, Y. H.
Citation
Tijdschrift voor Diergeneeskunde, 1995, 120, 14/15, pp 426-430
Abstract

A study carried out by researchers in Ontario, Canada, had 3 objectives: 1. to determine the prevalence of a variety of subclinical mastitis pathogens among Ontario dairy herds using bulk tank culture; 2. to determine the ability of the culture to predict the number of cows infected; 3. to survey...

Author(s)
Godkin, A.; Leslie, K.; Martin, W.
Citation
Hoard's Dairyman, 1990, 135, pp 810-811
Abstract

During a quarterly mastitis check of cattle in the Berlin area all single milkings having a raised cell content or containing microscopically visible pus were cultured for streptococci on sheep blood agar plates. About 60% of cultures from these sources proved to be group B, 15-21% group D, about...

Author(s)
Hellmann, E.; Hentschke, J.; Stalder, B.
Citation
Berliner und Münchener Tierärztliche Wochenschrift, 1971, 84, pp 121-124

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