Airborne dissemination of Escherichia coli in a dairy cattle farm and its environment

Cervera, Susana Sanz; Olarte, Carmen; Martínez-Olarte, Roberto; Navajas-Benito, Enrique V.; Alonso, Carla Andrea; Hidalgo-Sanz, Sara; Somalo, Sergio; Torres, Carmén

doi:10.1016/j.ijfoodmicro.2014.12.010

Cited by 18 publications

(17 citation statements)

References 32 publications

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“…In this context, some researchers observed differences in the concentration of microorganisms in the environment, depending on the season [30] or due to meteorological factors [31]. As Sanz et al [15] observed in their research of a dairy cattle farm, there was a seasonal effect on the number of isolates of bacteria (Escherichia coli) in the air, with up to twice the amount in the hot season (summer) than in the cold season (winter). Even the time of day influences the concentration of microorganisms.…”

Section: Effect Of Temperature On Air Qualitymentioning

confidence: 96%

“…For this reason, it is important to pay special attention to the quality of this air, as one of the main routes of contamination of dairy farms. The air is a hostile environment as a habitat for microorganisms because they are stressed by the lack of nutrients and dehydration, but it is an important vehicle for dissemination since we can find all kinds of bacteria in it [15]. The microorganisms could travel through the air adhered to dust particles or droplets, or even as single particles, until they fall and are deposited on the surrounding surfaces [16].…”

Section: Dairy Farm Environmentmentioning

confidence: 99%

“…The wind and the rate of ventilation on the farm is a source of pollution for the dairy industry and its products because it is a determining factor in the dispersion of bacteria [15]. For that reason, the cheese industry may also be affected by poor ventilation on the dairy farm.…”

Section: Effect Of Ventilation On Air Qualitymentioning

confidence: 99%

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Factors Affecting Levels of Airborne Bacteria in Dairy Farms: A Review

Quintana

Seseña

Sigler

et al. 2020

Animals

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This review attempts to reflect the importance of different factors that affect the environmental quality of dairy farms and must, therefore, be taken into account when considering the importance of environmental microbiology as a tool in the improvement of the quality of milk and dairy products. The effect of a factor such as temperature is vital for the dairy farm environment, especially when the temperatures are extreme, because a proper choice of temperature range improves the quality of the air and, thus, animal welfare. Similarly, the appropriate level of relative humidity in the environment should be taken into consideration to avoid the proliferation of microorganisms on the farm. Air quality, well-designed livestock housing, proper hygienic practices on the farm, stocking density, and the materials used in the livestock houses are all important factors in the concentration of microorganisms in the environment, promoting better welfare for the animals. In addition, a ventilation system is required to prevent the pollution of the farm environment. It is demonstrated that proper ventilation reduces the microbial load of the environment of dairy farms, enhancing the quality of the air and, therefore, the wellbeing of the animals. All this information is very useful to establish certain standards on dairy farms to improve the quality of the environment and, thereby, achieve better quality milk and dairy products.

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Section: Effect Of Temperature On Air Qualitymentioning

confidence: 96%

Section: Dairy Farm Environmentmentioning

confidence: 99%

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Factors Affecting Levels of Airborne Bacteria in Dairy Farms: A Review

Quintana

Seseña

Sigler

et al. 2020

Animals

View full text Add to dashboard Cite

show abstract

“…However, there is still a lack of data about emission sources of these bacteria. In a previous study carried out by our group, in order to demonstrate the importance of the air as a vehicle for Escherichia coli dissemination, air samples from inside a dairy cattle farm and the immediate surroundings of cultivated fields were studied by pulsed field gel electrophoresis (PFGE). The comparison of genetic profiles suggested that the strains isolated from inside and outside the farm were related, leading to the conclusion that airborne transfer of E. coli from inside the cattle farm to surrounding crop areas was feasible.…”

Section: Introductionmentioning

confidence: 99%

“…However, it was not designed to analyze the viability of the bacteria harboring these antimicrobial determinants after aerial transport. In the present work carried out in Spain, we isolate, phenotypically characterize and molecular analyze the resistance genotype and integron content of culturable E. coli strains previously recovered from air and exudate samples of a dairy cattle farm and its surroundings, to gain insight into the flow of antimicrobial resistance through the environment and food supply.…”

Section: Introductionmentioning

confidence: 99%