Airborne particulate matter from livestock production systems: A review of an air pollution problem

Cambra‐López, María; Aarnink, A.J.A.; Zhao, Yang; Calvet, S.; Torres, Álvaro Pastor

doi:10.1016/j.envpol.2009.07.011

Cited by 299 publications

(168 citation statements)

References 103 publications

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“…For example, the temperature and RH of air statistically significantly affect the generation of bioaerosols within different indoor environments. 1,5,23 Biological particulates from solid and relatively dry surfaces can be released as individual cells or with other particles 5 ; therefore, factors that affect the disassociation of bioaerosols from a matrix, such as air current (wind speed), may also be important. However, only common values of environmental parameters (30°C, 65% RH, ACH of 1 hr Ϫ1 , and an airflow of 0.01 m/sec) were set in this exploratory study.…”

Section: Discussionmentioning

confidence: 99%

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Characteristics of Microbial Aerosols Released from Chicken and Swine Feces

Chien

Chen

Lin

et al. 2011

Journal of the Air & Waste Management Association

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Bioaerosols generated during livestock and poultry production are significant occupational hazards. This study investigates the characteristics of bioaerosols released from animal feces. Fresh feces from pigs and chickens were obtained and tested in a controlled-environment facility. Airborne viable (culturable) bacteria and fungi were sampled hourly for 48 hr. The predominant species were identified via polymerase chain reaction analysis. The number of bacterial colonies released from chicken feces increased gradually, peaked at approximately 20 hr, and remained relatively constant to test end; however, the bacterial colonies released from swine feces did not increase significantly. The chicken feces released significantly (P Ͻ 0.05) more bacterial aerosols than swine feces over 40 hr, by approximately 1 order of magnitude. However, the difference in total fungal aerosols released from the two feces types was relatively small (30 -40%) and insignificant (P Ͼ 0.05). Aerosols sized between approximately 0.65 and 1

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Section: Discussionmentioning

confidence: 99%

“…5 A field study has estimated mean emission factors of 0.98 log(CFU)/hr/ pig for bacteria and 0.73 log(CFU)/hr/pig for fungi on the basis of mean microbial concentrations measured near the air outlet and mean ventilation rate of the facilities from swine houses. 8 However, source-specific emission factors of bioaerosols are hardly assessed.…”

Section: Discussionmentioning

confidence: 99%

Characteristics of Microbial Aerosols Released from Chicken and Swine Feces

Chien

Chen

Lin

et al. 2011

Journal of the Air & Waste Management Association

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“…This information, along with the increased risk of SRLV infection in those flocks in which forage, such as hay and straw, was stored in the attic directly above the animals, suggests that the increased risk could be due to levels of airborne contamination in the sheepfolds. Cambra-López et al [28] drew attention to the fact that airborne particulate matter is considered the primary factor associated with poor air quality in livestock buildings. The primary sources of airborne contamination are forage, litter, and dried animal excrement, which is consistent with the observations of the present study.…”

Section: Discussionmentioning

confidence: 99%

Risk factors associated with small-ruminant lentiviruses in sheepfold buildings

Bojar

Junkuszew

Dudko

et al. 2018

Ann Agric Environ Med.

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Introduction. Small-ruminant lentivirus (SRLV) infection is widespread across Europe. It causes substantial economic losses in sheep breeding. The main route of SRLV infection is through the mother's milk, especially colostrum However, infection can also occur via contact between infected and healthy animals. It should be noted that the mechanisms of contact infection are still relatively poorly understood. The virus can also spread through a flock via an aerogenic mechanism. Objective. Due to the increased risk of SRLV infection in sheep bred in an alcove system, this study sought to define the effect of various selected factors associated with alcove breeding on the frequency of SRLV infection in sheep Materials and method. Risk factors associated with small-ruminant lentivirus (SRLV) infection were analyzed among flocks of sheep in central-eastern Poland. Ninety-eight sheep flocks were selected for detailed investigation and included 6,470 ewes and 15 breeds and lines. Serologic testing of blood samples was used to identify infected animals and evaluate the epidemiologic status of particular flocks. Specific antibodies for Maedi Visna Virus (MVV) were detected via ELISA. Questionnaires were used to gather information concerning risk factors. Results. The study's results indicate that factors associated with environmental conditions under which sheep are kept play a significant role in determining the risk of SRLV infection. Conclusions. Special attention should be focused on airborne contamination associated with the technologies used in sheep breeding. Breeding technologies that limit airborne contamination in farm buildings should be employed. In developing programmes to eliminate SLRV in sheep flocks, improvement of zoohygenic conditions should also be considered.

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“…A layer of chalk powder (lime) on straw or sawdust, which is used to absorb moisture, also adds to the dust concentration (Samadi et al 2012). Dust, especially the concentration of the dust fraction up to 10 µm (PM 10 ), can have an adverse effect on animal health and productivity and can also negatively impact worker health (Takai et al 1998;Dolejs et al 2006;Cambra-Lopez et al 2010).…”

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confidence: 99%

Feasibility of Miscanthus as alternative bedding for dairy cows

Weyenberg¹,

Ulens²,

Reu³

et al. 2015

Vet. Med. - Czech

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ABSTRACT:Despite dairy farmers' awareness of the importance of correct bedding for the health and comfort of their cows, they are often frugal with respect to these bedding materials in order to reduce costs. In addition, farmers are currently dependent on the availability and price fluctuations of traditional bedding materials. For these reasons, the scientific literature as well as the trade press point to an intensifying search for affordable alternative bedding materials. The aim of this study was to investigate whether Miscanthus, a woody grass that requires low input but generates high yield, could replace straw in deep little dairy cow cubicles. The cows' cubicles were lined for two consecutive 14-day periods with straw/chalk/water bedding, followed by two consecutive 14-day periods with ground-Miscanthus/chalk bedding. No significant differences were found in the following parameters: loss/ waste of bedding material, bacterial growth in cubicles, cow skin lesions (except for carpus lesions), cow cleanliness or cow comfort. Dust concentrations measured as PM 10 were higher when cubicles were filled with strawbased bedding, but never exceeded workspace quality safety limits. Based on these results, one can conclude that Miscanthus has potential as a viable alternative to straw when used as a bedding material. On-farm cultivation of Miscanthus may increase dairy farmer self-sufficiency and could reduce bedding costs. Keywords: bedding material; cow comfort; bacterial loadList of abbreviations ADF = acid detergent fibre, ADL = acid detergent lignin, CCI = cow comfort index, DM = dry matter, NDF = neutral detergent fibre, PM = particulate matter, SUI = stall use index

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Airborne particulate matter from livestock production systems: A review of an air pollution problem

Cited by 299 publications

References 103 publications

Characteristics of Microbial Aerosols Released from Chicken and Swine Feces

Characteristics of Microbial Aerosols Released from Chicken and Swine Feces

Risk factors associated with small-ruminant lentiviruses in sheepfold buildings

Feasibility of Miscanthus as alternative bedding for dairy cows

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