Prevalence and herd-level risk factors for intramammary infection with coagulase-negative staphylococci in Dutch dairy herds

Abstract

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Quarter- and cow-level risk factors for intramammary infection with coagulase-negative staphylococci species in Swiss dairy cows

“…In contrast, Sampimon et al (2009) found increased odds for CNS IMI when cows had access to pasture in Dutch dairy herds. Other identified manageable herd-level risk factors included dry cows housed in one group instead of multiple groups, the use of non-tap water as a drinking source, and a high percentage of stalls contaminated with milk after milk leakage (Sampimon et al, 2009). In heifers, increased odds for CNS IMI were found in animals with a poor hygiene score, lack of teat dipping, and nonclipped udders before calving .…”

“…A lower CNS prevalence was observed in Canadian herds with sandor wood-based bedding products and in herds where cows had access to pasture (Dufour et al, 2012). In contrast, Sampimon et al (2009) found increased odds for CNS IMI when cows had access to pasture in Dutch dairy herds. Other identified manageable herd-level risk factors included dry cows housed in one group instead of multiple groups, the use of non-tap water as a drinking source, and a high percentage of stalls contaminated with milk after milk leakage (Sampimon et al, 2009).…”

“…Subclinical IMI caused by CNS are highly prevalent in European dairy herds (Roesch et al, 2007;Sampimon et al, 2009;Rüegsegger et al, 2014), including herds with a high bulk milk SCC (Piepers et al, 2007). With improved control of major mastitis pathogens, minor pathogens, such as CNS, are coming more into focus as causative agents of increased SCC Tomazi et al, 2015).…”

Beta-lactamase detection in Staphylococcus aureus and coagulase-negative Staphylococcus isolated from bovine mastitis

“…Unsuccessful treatments are usually observed for mastitis caused by beta-lactamase producing isolates, particularly S. aureus (Sol et al 2000). S. aureus is accepted as a major mastitis pathogen with laborious treatment, whereas CNS remains as a minor pathogen (Sampimon et al 2009). In many countries, CNS have become the most common mastitis-causing agents (Pyorala & Taponen 2009), and is proving to be as pathogenic as S. aureus, at least concerning the presence of antimicrobial resistance genes.…”

Distribution of classical enterotoxin genes in staphylococci from milk of cows withand without mastitis and the cowshed environment

“…However, recently CNS have become a significantly predominant pathogen in bovine mastitis (Sampimon et al 2009, Kot et al 2012a. Similarly as S. aureus, CNS produce a number of virulence factors that determine the ability of adhesion, avoidance of host immune mechanisms, production of toxins and enzymes (Dinges et al 2000).…”