Spatial and Diurnal Variations of Particulate Matter Concentration of a Pilot-Scale Aviary Layer House in Winter

dc.contributor.author Wang, Yu
dc.contributor.author Li, Dapeng
dc.contributor.author Leonard, Suzanne
dc.contributor.author Xin, Hongwei
dc.contributor.author Shi, Zhengxiang
dc.contributor.author Xin, Hongwei
dc.contributor.author Chai, Lilong
dc.contributor.author Li, Baoming
dc.contributor.department Animal Science
dc.contributor.department Agricultural and Biosystems Engineering
dc.contributor.department Egg Industry Center
dc.date 2018-10-09T10:15:34.000
dc.date.accessioned 2020-06-29T22:35:28Z
dc.date.available 2020-06-29T22:35:28Z
dc.date.copyright Mon Jan 01 00:00:00 UTC 2018
dc.date.embargo 2018-09-27
dc.date.issued 2018-01-01
dc.description.abstract <p>Laying hen production plays an important role in particulate matter (PM) emissions which potentially cause air pollution and adverse health effect on animals and workers. Aviary cage-free (CF) egg production systems have been attracting increasing attention due to concerns over animal welfare and increased market demand. While studies have been conducted to characterize PM concentrations and emissions of aviary CF houses with litter floor, few reports are available of this information for aviary CF layer houses equipped with slat floor. In this study, PM concentrations – both spatial and diurnal patters inside a pilot-scale aviary CF layer house (1,800 laying hens, LxWxH of 28.2 x 9.0 x 3.0 m) in northern China were measured under winter conditions. Daily mean PM2.5, PM10, and TSP levels were found to be 0.19±0.11, 1.05±0.65, 2.90±2.07 mg/m3, respectively, which were considerably lower than those reported in previous studies of aviary CF houses with litter floor in cold weather. Daytime PM concentrations were significantly higher than those at night primarily due to differences in animal activity and feed supply. The average PM10 and TSP concentrations during light period (5:00-21:00 h) were 1.34 mg/m3 and 3.75 mg/m3, amounting to 279% and 304% of those during the dark period (21:00-5:00h), respectively. Spatial variations for PM10 and TSP were observed in the experimental hen house due to non-uniform distribution of ventilation air and localized generation of the constituents. Higher TSP concentrations (4.26 mg/m3) were found at worker respiratory level (2.0 m) as compared to floor level (0.5 m, 3.00 mg/m3). TSP concentration at one end of the house (west) was found to be 28.3% and 86.9% higher than the middle and the opposite (east) end. This spatial variation characteristic points out the importance of multi-location sampling when assessing indoor air quality and aerial emissions (for cross ventilation). Data from this study will be useful for future improvement of the housing ventilation design and operation. Future study should also assess PM concentrations of the housing style under warm seasons.</p>
dc.description.comments <p>This presentation is published as Wang, Yu, Dapeng Li, Suzanne M. Leonard, Zhengxiang Shi, Hongwei Xin, Lilong Chai, and Baoming Li. "Spatial and Diurnal Variations of Particulate Matter Concentration of a Pilot-Scale Aviary Layer House in Winter." 10th International Livestock Environment Symposium (ILES X). Omaha, NE. September 25-27, 2018. Paper No. ILES18-141. DOI: <a href="https://dx.doi.org/10.13031/iles.18-141" target="_blank">10.13031/iles.18-141</a>. Posted with permission.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/abe_eng_conf/572/
dc.identifier.articleid 1574
dc.identifier.contextkey 12951658
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath abe_eng_conf/572
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/618
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/abe_eng_conf/572/2018_XinHongwei_SpatialDiurnal.pdf|||Sat Jan 15 00:59:33 UTC 2022
dc.source.uri 10.13031/iles.18-141
dc.subject.disciplines Agriculture
dc.subject.disciplines Bioresource and Agricultural Engineering
dc.subject.disciplines Environmental Health
dc.subject.disciplines Poultry or Avian Science
dc.subject.keywords Air quality
dc.subject.keywords aviary cage-free hen housing
dc.subject.keywords PM concentration
dc.subject.keywords worker health
dc.title Spatial and Diurnal Variations of Particulate Matter Concentration of a Pilot-Scale Aviary Layer House in Winter
dc.type article
dc.type.genre presentation
dspace.entity.type Publication
relation.isAuthorOfPublication 36e0a8ce-fa2e-4df4-9f67-8d1717122650
relation.isOrgUnitOfPublication 85ecce08-311a-441b-9c4d-ee2a3569506f
relation.isOrgUnitOfPublication 8eb24241-0d92-4baf-ae75-08f716d30801
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