Air Contaminants Emissions at Sheep Feeding Operations as a Part of AFOa€?s Emissions Inventory

摘要

Information about the air pollutants at sheep and goat feeding operations (SFOs) is presented in this review. This survey covers the effects of environmental parameters, including ambient air temperature, relative humidity, gaseous and particulate contaminants on sheep health. Furthermore, factors affecting air contaminants in sheep buildings, including facility design, manure handling and storage, ventilation, animal activity, type of floor, and stocking density, are discussed. This review found that floor bedding, feces, feed and outdoor dust are the main sources of particulate and gaseous contaminants in sheep husbandry. The majority of the secondary pollutants could be related to an increase in air temperature, which caused dryness of the bedding soil and helped with the aerosolization of dust. Shielding the wind side of the building will possibly help toreduce the effect of ambient dust and control the indoor dust concentration. The ranges of literature values for total suspended particles (TSP), particulate matter with a diameter less than or equal to 10 μm (PM10) and particulate matter with a diameter less than or equal to 2.5 μm (PM2.5) were0.75-3.6, 0.03-2.0 and 0.04-0.05mg/m3, respectively.