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Microbes and Infection, 2022
Non-aureus staphylococci (NAS) and Staphylococcus aureus are pathogens that cause bovine mastitis, a costly disease for dairy farmers, however; many NAS are considered part of the normal udder microbiota. It has been suggested that through a mechanism that remains to be elucidated, NAS intramammary colonization can prevent subsequent infection with ...
François Malouin +2 more
exaly +3 more sources
Non-aureus staphylococci (NAS) and Staphylococcus aureus are pathogens that cause bovine mastitis, a costly disease for dairy farmers, however; many NAS are considered part of the normal udder microbiota. It has been suggested that through a mechanism that remains to be elucidated, NAS intramammary colonization can prevent subsequent infection with ...
François Malouin +2 more
exaly +3 more sources
Journal of Dairy Science, 2021 This observational study determined the lipidome of cow milk during subclinical intramammary infection (IMI) by non-aureus staphylococci (NAS), also defined as coagulase-negative staphylococci, using an untargeted approach. Among the pathogens causing bovine IMI, NAS have become the most frequently isolated bacteria from milk samples.
Maria Filippa Addis +2 more
exaly +3 more sources
Longitudinal study on the effects of intramammary infection with non-aureus staphylococci on udder health and milk production in dairy heifers [PDF]
Journal of Dairy Science, 2021 We conducted a longitudinal study to evaluate the effect of non-aureus staphylococci (NAS) causing subclinical intramammary infections (IMI) on quarter milk somatic cell count (qSCC) and quarter milk yield (qMY). In total, 324 quarters of 82 Holstein Friesian heifers were followed from calving to 130 d in milk (DIM) and were sampled 10 times each at 14-
Sarne De Vliegher +2 more
exaly +4 more sources
Non-aureus staphylococci in fecal samples of dairy cows: First report and phenotypic and genotypic characterization [PDF]
Journal of Dairy Science, 2019 The aims of this study were to determine whether non-aureus staphylococci (NAS) are present in rectal feces of healthy dairy cows, and if so, to delineate species to which they belong and to study several phenotypic and genotypic traits as a first step toward determining the potential impact of fecal shedding of NAS on bovine udder health.
Sarne De Vliegher +2 more
exaly +3 more sources
Distribution of non-aureus staphylococci species in udder quarters with low and high somatic cell count, and clinical mastitis [PDF]
Journal of Dairy Science, 2017 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.
Simon Dufour +2 more
exaly +3 more sources
Distribution of non-aureus staphylococci from quarter milk, teat apices, and rectal feces of dairy cows, and their virulence potential [PDF]
Journal of Dairy Science, 2020 Non-aureus staphylococci (NAS) are predominantly isolated from bovine milk samples of quarters suffering from subclinical mastitis. They are also abundantly present on dairy cows' teat apices and can be recovered from bovine fecal samples, as recently described.
Sarne De Vliegher +2 more
exaly +3 more sources
Antimicrobial resistance in non-aureus staphylococci isolated from milk is associated with systemic but not intramammary administration of antimicrobials in dairy cattle [PDF]
Journal of Dairy Science, 2018 Non-aureus staphylococci (NAS) are the bacteria most frequently isolated from bovine milk. Objectives of this study were to determine herd-level associations between antimicrobial use (AMU) and prevalence of antimicrobial resistance (AMR) and antimicrobial resistance genes in NAS according to antimicrobials and routes of administration. The AMR profile
Diego Nóbrega +2 more
exaly +3 more sources
Typeability of MALDI-TOF assay for identification of non-aureus staphylococci associated with bovine intramammary infections and teat apex colonization [PDF]
Journal of Dairy Science, 2018 Matrix-assisted laser desorption/ionization time of flight (MALDI-TOF), a culture-dependent assay, has recently been implemented for routine identification of non-aureus staphylococci (NAS) species from milk, but the assay has never been investigated for NAS from nonmilk or environmental samples.
Karl Pedersen +2 more
exaly +6 more sources
Phenotypic and genotypic antimicrobial susceptibility of non-aureus staphylococci in dairy goats
American Association of Bovine Practitioners Conference ProceedingsSubclinical mastitis, most commonly due to non-aureus staphylococci (NAS), results in significant production losses within the dairy goat industry while also shortening the productive life of the animal due to the resultant chronic changes within the udder. The prevalence of this group of pathogens may be up to 50% in some dairies. Dry-off is a common
Michelle P. Buckley +7 more
openaire +1 more source
Foodborne Pathogens and Disease
Non-aureus staphylococci (NAS) and mammalicocci (collectively NASM) are coagulase-negative staphylococci, though they are less well-known than Staphylococcus aureus . Certain species within the NASM group have been associated with foodborne illnesses due to their ability to produce ...
Olubukola Blessing, Oyetibo +4 more
openaire +2 more sources
Non-aureus staphylococci (NAS) and mammalicocci (collectively NASM) are coagulase-negative staphylococci, though they are less well-known than Staphylococcus aureus . Certain species within the NASM group have been associated with foodborne illnesses due to their ability to produce ...
Olubukola Blessing, Oyetibo +4 more
openaire +2 more sources