동절기 산란계사 사육형태별 배출되는 미세먼지 및 암모니아 농도

Abstract

In this study, we measured the concentration of particulate matter (PM) and ammonia (NH₃) emission in the winters according to the breeding type of laying hen houses. Measurements were performed thrice in Barn, Aviary, and Cage houses every 2 weeks from December to January. The changes in the PM₁₀ and PM_2.5 concentrations were similar in all three breeding types. The PM₁₀ and PM_2.5 concentrations, measured three times, were the highest in the Aviary house. In the results measured by time, the PM₁₀ and PM_2.5 concentrations were the lowest during the dark period (22:00 to 4:00) of the day. The NH₃ concentration was the highest in the Cage house and the lowest in the Barn house. Regarding emissions over time, the results of the three measurements showed different patterns and differed from those of the PM. In addition, with passage of time from the 1st (december) to 3rd (january), the NH₃ concentration gradually increased. The daily PM₁₀ and PM_2.5 concentrations in the Aviary house, which were higher than those of the other houses, were 4,787 μg/m³ and 388.6 μg/m³, respectively, while, the PM₁₀ and PM_2.5 concentrations outside the poultry houses were 226.0 μg/m³ and 39.3 μg/m³, respectively. The daily NH₃ concentration was 7.70 ppm and 9.20 ppm at the center and end of the Cage house, respectively. This was higher than that in the other houses. In conclusion, the concentrations of PM (PM₁₀, PM_2.5) and NH₃ were the highest in the Aviary and Cage laying hen houses, respectively.