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Ann Agric Environ Med 2006, 13, 133-138

EFFECT OF SPRAYING BIOLOGICAL ADDITIVES FOR REDUCTION OF DUST
AND BIOAEROSOL IN A CONFINEMENT SWINE HOUSE

Ki Y. Kim1, Han J. Ko2, Hyeon T. Kim2, Chi N. Kim3

1Department of Preventive Medicine and Public Health, Ajou University, Suwon, Korea
2Graduate School of Agriculture, Kyoto University, Kyoto, Japan
3Institute for Occupational Health, Yonsei University, Seoul, Korea

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Kim KY, Ko HJ, Kim HT, Kim CN: Effect of spraying biological additives for reduction of dust and bioaerosol in a confinement swine house. Ann Agric Environ Med 2006, 13, 133-138.

Abstract: The aim of this on-site experiment is to evaluate and compare efficiencies of currently utilized biological additives to reduce emissions of dust and bioaeorsol in a confinement swine house. The mean reduction rate of total dust only after spray ranged was approximately 30% for all the treatments, compared to initial level before spraying additives which was found to reduce the initial level of total dust significantly (p<0.05). The mean reduction rate of all the treatments at 1hr after spraying was about 24% which was 6% lower than only after spray. Since 3hr after spraying, however, total dust level fluctuated inconstantly for all the treatments, besides application of soybean oil. The mean reduction rates of all the treatments only after spraying as compared to initial level before spraying were about 53% for total airborne bacteria (p<0.01) and 51% for total airborne fungi (p<0.01), respectively. At 1hr after spraying, the reduction rate of total airborne fungi averaged to about 35% for all the treatments (p<0.05), while insignificant reductions of total airborne bacteria were found only in the treatments with salt water, soybean oil, artificial spice, and essential oil (p>0.05). The fluctuations of total airborne bacteria and fungi, which were similar to total dust, were observed for all the treatments 3 hr after spray.

Address for correspondence: Ki Youn Kim, Department of Preventive Medicine and Public Health, School of Medicine, Ajou University Suwon, 443-721, Korea.
E-mail: kkysnu5@empal.com

Key words: spray, biological additive, dust, bioaerosol, confinement swine house.


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