Mitigation of Aerosol and Microbial Concentration in a Weaning Piggery by Spraying Nanobubble Ozone Water with an Ultrasonic Sprayer
Enhancing biosecurity measures in livestock is an essential prerequisite for producing animal products with the highest levels of safety and quality. In Japan, 70% of the mortalities post-weaning are attributed to respiratory pathogens. The research has shown that microorganisms, including both viru...
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-02-01
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| Series: | Animals |
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| Online Access: | https://www.mdpi.com/2076-2615/14/5/657 |
| _version_ | 1797264916590100480 |
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| author | Takumi Yoshino Atuso Ikeguchi |
| author_facet | Takumi Yoshino Atuso Ikeguchi |
| author_sort | Takumi Yoshino |
| collection | DOAJ |
| description | Enhancing biosecurity measures in livestock is an essential prerequisite for producing animal products with the highest levels of safety and quality. In Japan, 70% of the mortalities post-weaning are attributed to respiratory pathogens. The research has shown that microorganisms, including both viruses and bacteria, do not merely float in the air independently. Instead, they spread by adhering to aerosols. Therefore, improving the control of aerosol dissemination becomes a critical strategy for reducing pathogenic loads and boosting the overall efficiency of livestock production. This study focused on reducing concentrations of aerosol particles, airborne microbial concentrations, and airborne mass concentrations by spraying ozone solution with an ultrasonic sprayer. The experiments were conducted at a farm in Fukushima Prefecture, Japan, known for its integrated management system, overseeing a herd of 200 sows. Nanobubble ozone water particles were dispersed using an ultrasonic sprayer, which allowed the particles to remain airborne significantly longer than those dispersed using a standard nozzle, at a rate of 30 mL per weaning pig 49 days old, for a 10 min period. This procedure was followed by a 10 min pause, and the cycle was repeated for 17 days. Measurements included concentrations of airborne bacteria, aerosol mass, and aerosol particles. The findings demonstrated a substantial reduction in airborne microbial concentrations of <i>Escherichia coli</i> and <i>Staphylococcus aureus</i> in the treated area compared to the control, with reductions reaching a peak of 85.7% for <i>E. coli</i> and 69.5% for <i>S. aureus</i>. Aerosol particle sizes ranging from 0.3–0.5 µm, 0.5–1.0 µm, 1.0–2.0 µm, 2.0–5.0 µm, to 5.0–10.0 µm were monitored, with a notable decrease in concentrations among larger particles. The average aerosol mass concentration in the test area was over 50% lower than in the control area. |
| first_indexed | 2024-04-25T00:36:30Z |
| format | Article |
| id | doaj.art-60f8395d5c244a9abb5599b29853a82c |
| institution | Directory Open Access Journal |
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| language | English |
| last_indexed | 2024-04-25T00:36:30Z |
| publishDate | 2024-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Animals |
| spelling | doaj.art-60f8395d5c244a9abb5599b29853a82c2024-03-12T16:37:43ZengMDPI AGAnimals2076-26152024-02-0114565710.3390/ani14050657Mitigation of Aerosol and Microbial Concentration in a Weaning Piggery by Spraying Nanobubble Ozone Water with an Ultrasonic SprayerTakumi Yoshino0Atuso Ikeguchi1Graduate Schools, Utsunomiya University; 350 Minemachi, Utsunomiya 321-8505, JapanDepartment of Environmental Engineering, Faculty of Agriculture, Utsunomiya University, 350 Minemachi, Utsunomiya 321-8505, JapanEnhancing biosecurity measures in livestock is an essential prerequisite for producing animal products with the highest levels of safety and quality. In Japan, 70% of the mortalities post-weaning are attributed to respiratory pathogens. The research has shown that microorganisms, including both viruses and bacteria, do not merely float in the air independently. Instead, they spread by adhering to aerosols. Therefore, improving the control of aerosol dissemination becomes a critical strategy for reducing pathogenic loads and boosting the overall efficiency of livestock production. This study focused on reducing concentrations of aerosol particles, airborne microbial concentrations, and airborne mass concentrations by spraying ozone solution with an ultrasonic sprayer. The experiments were conducted at a farm in Fukushima Prefecture, Japan, known for its integrated management system, overseeing a herd of 200 sows. Nanobubble ozone water particles were dispersed using an ultrasonic sprayer, which allowed the particles to remain airborne significantly longer than those dispersed using a standard nozzle, at a rate of 30 mL per weaning pig 49 days old, for a 10 min period. This procedure was followed by a 10 min pause, and the cycle was repeated for 17 days. Measurements included concentrations of airborne bacteria, aerosol mass, and aerosol particles. The findings demonstrated a substantial reduction in airborne microbial concentrations of <i>Escherichia coli</i> and <i>Staphylococcus aureus</i> in the treated area compared to the control, with reductions reaching a peak of 85.7% for <i>E. coli</i> and 69.5% for <i>S. aureus</i>. Aerosol particle sizes ranging from 0.3–0.5 µm, 0.5–1.0 µm, 1.0–2.0 µm, 2.0–5.0 µm, to 5.0–10.0 µm were monitored, with a notable decrease in concentrations among larger particles. The average aerosol mass concentration in the test area was over 50% lower than in the control area.https://www.mdpi.com/2076-2615/14/5/657aerosolairborne microbialozone solutionultrasonic sprayerweanling piggery |
| spellingShingle | Takumi Yoshino Atuso Ikeguchi Mitigation of Aerosol and Microbial Concentration in a Weaning Piggery by Spraying Nanobubble Ozone Water with an Ultrasonic Sprayer Animals aerosol airborne microbial ozone solution ultrasonic sprayer weanling piggery |
| title | Mitigation of Aerosol and Microbial Concentration in a Weaning Piggery by Spraying Nanobubble Ozone Water with an Ultrasonic Sprayer |
| title_full | Mitigation of Aerosol and Microbial Concentration in a Weaning Piggery by Spraying Nanobubble Ozone Water with an Ultrasonic Sprayer |
| title_fullStr | Mitigation of Aerosol and Microbial Concentration in a Weaning Piggery by Spraying Nanobubble Ozone Water with an Ultrasonic Sprayer |
| title_full_unstemmed | Mitigation of Aerosol and Microbial Concentration in a Weaning Piggery by Spraying Nanobubble Ozone Water with an Ultrasonic Sprayer |
| title_short | Mitigation of Aerosol and Microbial Concentration in a Weaning Piggery by Spraying Nanobubble Ozone Water with an Ultrasonic Sprayer |
| title_sort | mitigation of aerosol and microbial concentration in a weaning piggery by spraying nanobubble ozone water with an ultrasonic sprayer |
| topic | aerosol airborne microbial ozone solution ultrasonic sprayer weanling piggery |
| url | https://www.mdpi.com/2076-2615/14/5/657 |
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