The transmission and control of mastitis in dairy cows: A theoretical approach

White, Lisa J.; Lam, T.J.G.M.; Schukken, Y.H.; Green, Laura; Medley, Graham F.; Chappell, M.J.

doi:10.1016/j.prevetmed.2006.01.008

Cited by 22 publications

(23 citation statements)

References 24 publications

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“…The infection can also progress to cause animal death if culling has not already taken place (Cobo‐Abreu et al, ). The antibiotics currently used to treat mastitis are becoming less effective due to the increasing prevalence of antibiotic resistance in many mastitis‐causing pathogens which include S. aureus , E. coli , Streptococcus uberis and Streptococcus dysgalactiae (White et al ).…”

Section: Veterinary Applications Of Phages In Dairy Productionmentioning

confidence: 99%

The use of bacteriophages to control and detect pathogens in the dairy industry

O’Sullivan

Bolton

McAuliffe

et al. 2019

Int J of Dairy Tech

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Dairy products are susceptible to bacterial contamination during both primary production and the processing stages. Pasteurisation and high hydrostatic pressure are used to eliminate bacteria from milk; however, some heat‐tolerant pathogens and bacterial spores may survive these processes. Bacteriophages (phages) are viruses that infect and lyse specific bacteria. These or their encoded proteins may be exploited for pathogen biocontrol in milk products and for mastitis treatment during primary production. The host specificity of phages and their proteins may also be exploited for pathogen detection. Various examples of phage‐mediated pathogen biocontrol and detection in the dairy context are discussed in this review.

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Section: Veterinary Applications Of Phages In Dairy Productionmentioning

confidence: 99%

The use of bacteriophages to control and detect pathogens in the dairy industry

O’Sullivan

Bolton

McAuliffe

et al. 2019

Int J of Dairy Tech

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“…Additionally, the number of new cases of contagious mastitis is predominantly determined by the number of infected cows present in the herd (e.g. White et al 2006). The more cows that shed bacteria into towels, teat cup liners, and hands of milkers, the more likely it is that additional cows will become infected.…”

Section: Cullingmentioning

confidence: 99%

Herd level approach to high bulk milk somatic cell count problems in dairy cattle

Barkema

Vliegher

Piepers

et al. 2013

Veterinary Quarterly

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Since the introduction of the standard mastitis prevention program in the late 1960s, enormous progress has been made in decreasing the average bulk milk somatic cell count (BMSCC). In many countries, reduction of BMSCC has been encouraged through premium payments or penalty systems. However, the success of the program depends heavily on consistent implementation of management practices. The approach to problem solving in a herd with high BMSCC must include the following elements: (1) problem definition using primary udder health parameters; (2) detection of cows causing the problem; (3) definition of short-and long-term goals; (4) formulation and implementation of a herd management plan; and (5) evaluation of the results. Findings and plans are recorded for use at follow-up visits. Every high BMSCC problem can be solved if farmers are sufficiently motivated, if farm advisors are sufficiently knowledgeable, and if farmer and advisors work together according to a jointly determined plan.

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“…Traditionally, all udder pathogens have been classified as either 'contagious' or 'environmental', depending on their primary behavior and their route of transmission (White et al, 2006). The major contagious udder pathogens on dairy farms are: Staphylococcus aureus, Streptococcus agalactiae и Mycoplasma bovis (Trajcev et al, 2009 Piessens et al (2012) revealed that this dichotomous in transmission of udder pathogens is loosing and from epidemiological aspect there is no strict border between contagious and environmental mastitis.…”

Section: Introductionmentioning

confidence: 99%

Mastitis Pathogens and Their Antimicrobial Susceptibility in Early Lactating Dairy Cows

Trajchev¹,

Nakov²,

Petrovska³

et al. 2017

AgricultForest

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SUMMARYA two years cross-sectional longitudinal survey was carried out for determination of udder pathogens prevalence and their antimicrobial profile in one commercial dairy farm. Dairy cows were selected in relation to date of calving and period of early lactation in order to minimize environmental impact. A udder quarters milk samples were obtained from totally 211 black-white dairy cows. The quarter milk-samples were screening using the California Mastitis Test (CMT) for detection of abnormal milk secretion (AMS) and from quarters with AMS were obtained milk-samples for microbiological examination in order to detect intramammary infections (IMI). The milk-samples were obtained in two periods: period from beginning of lactation until 21 st day in lactation and period from 22 nd to 42 nd day in lactation. The prevalence of IMI in period from beginning of lactation until 21 st day in lactation and period from 22 nd to 42 nd day in lactation was 4.03% and 4.38%, respectively. Based on CMT, there was found totally 162 udder quarters with AMS. From these quarters, the overall proportion of microbiological negative quarters was 56.17% and mastitis pathogens were isolated from 43.83% of udder quarters, from which the dominant mastitis pathogens were: Streptococcus agalactiae (19.14%), Enterococcus spp. (8.02%), Candida non-albicans (6.79%), Staphylococcus aureus (6.17%), Escherichia coli (1.85%), Aspergilus niger (1.23%) and Pseudomonas aeruginosa (0.62%). The results indicated that contagious pathogens were the most common patogens of IMI in early lactation. There was significant difference in the prevalence of intramammary infection (χ 2 =35.136, df=1, p<0.001) when comparing the front and rear udder quarters. The isolated bacteria were examined for determination of susceptibility to 27 most used antimicrobial agents for mastitis treatment. The most resistant strain was Staphylococcus aureus.

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The transmission and control of mastitis in dairy cows: A theoretical approach

Cited by 22 publications

References 24 publications

The use of bacteriophages to control and detect pathogens in the dairy industry

The use of bacteriophages to control and detect pathogens in the dairy industry

Herd level approach to high bulk milk somatic cell count problems in dairy cattle

Mastitis Pathogens and Their Antimicrobial Susceptibility in Early Lactating Dairy Cows

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