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Abstract

Mastitis is the most prevalent and costly disease in dairy cattle worldwide, with implications for animal health and welfare as well as production and economics. Nonlactating heifers are an often-neglected group of animals concerning mastitis management, as they are assumed to be free of mastitis....

Author(s)
Naqvi, S. A.; Buck, J. de; Dufour, S.; Barkema, H. W.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2018, 101, 4, pp 3233-3247
Abstract

The objectives of this study were to (1) correlate pre-partum teat skin colonization with non-aureus staphylococcal (NAS) intramammary infection (IMI) in early lactation, and (2) evaluate infection dynamics of subclinical NAS IMI in goats during lactation in a small ruminant lentivirus-infected...

Author(s)
Gosselin, V. B.; Dufour, S.; Adkins, P. R. F.; Poock, S.; Pithua, P.; Middleton, J. R.
Publisher
Elsevier B.V., Amsterdam, Netherlands
Citation
Veterinary Microbiology, 2019, 230, pp 156-163
Abstract

The objectives of the research described here were to describe the persistence of intramammary infections (IMI) caused by coagulase negative staphylococci (CNS) in goats using strain-typing, and to evaluate the relationship between species-specific CNS IMI and somatic cell score (SCS) at the...

Author(s)
Gosselin, V. B.; Dufour, S.; Adkins, P. R. F.; Middleton, J. R.
Publisher
Cambridge University Press, Cambridge, UK
Citation
Journal of Dairy Research, 2019, 86, 2, pp 211-216
Abstract

The objective of the present study was to look for genes encoding for superantigens in bovine coagulase-negative staphylococci (CNS) isolated from milk in Canada. We screened by PCR 71 bovine CNS isolates, obtained from the Mastitis Pathogen Culture Collection managed by the Canadian Bovine...

Author(s)
Corbeil, A.; Labrie, J.; Goetz, C.; Dufour, S.; Doghri, I.; Rivière, L.; Jacques, M.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2019, 102, 3, pp 2008-2010
Abstract

The primary objective of the current study was to evaluate cure rate following an early-lactation extended intramammary pirlimycin treatment on heifers naturally infected by Staphylococcus aureus. The secondary objective was to assess Petrifilm Staph Express (3 M Microbiology, St. Paul, MN) count...

Author(s)
Skoulikas, S.; Dufour, S.; Haine, D.; Perreault, J. Y.; Roy, J. P.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2018, 101, 2, pp 1419-1427
Abstract

Non-aureus staphylococci (NAS), the microorganisms most frequently isolated from bovine milk worldwide, are a heterogeneous group of numerous species. To establish their importance as a group, the distribution of individual species needs to be determined. In the present study, NAS intramammary...

Author(s)
Condas, L. A. Z.; Buck, J. de; Nobrega, D. B.; Carson, D. A.; Naushad, S.; Vliegher, S. de; Zadoks, R. N.; Middleton, J. R.; Dufour, S.; Kastelic, J. P.; Barkema, H. W.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2017, 100, 7, pp 5592-5612
Abstract

The effect of non-aureus staphylococci (NAS) in bovine mammary health is controversial. Overall, NAS intramammary infections (IMI) increase somatic cell count (SCC), with an effect categorized as mild, mostly causing subclinical or mild to moderate clinical mastitis. However, based on recent...

Author(s)
Condas, L. A. Z.; Buck, J. de; Nobrega, D. B.; Carson, D. A.; Roy, J. P.; Keefe, G. P.; DeVries, T. J.; Middleton, J. R.; Dufour, S.; Barkema, H. W.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2017, 100, 7, pp 5613-5627
Abstract

The purpose of this study was to investigate non-aureus Staphylococcus spp. intramammary infections (IMI) in periparturient heifers and determine the relationship of precalving body site isolation with precalving IMI and postcalving IMI using molecular speciation and strain-typing methods....

Author(s)
Adkins, P. R. F.; Dufour, S.; Spain, J. N.; Calcutt, M. J.; Reilly, T. J.; Stewart, G. C.; Middleton, J. R.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2018, 101, 6, pp 5388-5403
Abstract

Author(s)
Perry, J.; Middleton, J.; Dufour, S.; Scholl, D.; Calloway, C.; Andersen, S.
Publisher
American Association of Bovine Practitioners, Stillwater, USA
Citation
Proceedings of the 43rd Annual Conference of the American Association of Bovine Practitioners, Albuquerque, New Mexico, USA, 19-21 August, 2010, 2010, pp 189
Abstract

The purpose of this study was to describe the prevalence and distribution of staphylococcal species on the teat and inguinal skin of dairy heifers across the various stages of the heifer life cycle. The cross-sectional study included 106 Holstein heifers with an age range of 0 d to 27 mo that were...

Author(s)
Adkins, P. R. F.; Dufour, S.; Spain, J. N.; Calcutt, M. J.; Reilly, T. J.; Stewart, G. C.; Middleton, J. R.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2018, 101, 4, pp 3213-3225

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