Czech J. Anim. Sci., 2006, 51(7):305-310 | DOI: 10.17221/3943-CJAS
Elimination of dust production from stables for dairy cows
- Research Institute of Animal Production, Prague-Uhříněves, Czech Republic
Three experiments with dairy cows were conducted in an air-conditioned stable under controlled conditions. The objective of the study was to determine the effect of the regulated ionic microclimate on the emission of dust particles (aerosol) up to the diameter of 10 μm (PM10). Four dairy cows were housed in common straw-bedded boxes and the stable was equipped with a vacuum ventilation system. To regulate the ionic microclimate, the apparatus Agri 1 000 (maximum voltage 7 kV, current 25 μA) was used. Thus the airborne dust concentration in the stable (42-132 μg/m3) was reduced by 12.7-26.2%. In experiments B and C statistical significance P ≤ 0.05 was reached. The emissive flow from the stable was decreased from 7.41-8.63 mg/h to 5.30-6.55 mg/h per one animal, i.e. by 24.1-31.3%. Owing to ionisation the ratio of n+ to n- ions was changed. A unipolarity coefficient (P) was changed from 1.65-1.93 to 0.82-0.89, i.e. superiority of n- ions.
Keywords: dairy cows; housing; air ionisation; dust emission PM10; ion ratio
Published: July 31, 2006 Show citation
References
- Dolejš J., Mašata O., Návarová H., Toufar O., Adamec T. (2004): Emissions of dust patricles from animal production buildings (in Czech). In: Proc. Int. Bioclimatological Workshop 2004, Viničky, Slovak Republic, Slovak Bioclimatological Society Bratislava. 38-39.
- Hůnová I., Šantroch J. (2000): Legal regulations of EU and thein consequences for dust aerosol (PM10) monitoring in Czech Republic (in Czech). Ochrana ovzduší, 6, 1-3.
- Krzyzanowski M., van Leeuwen R.F.X., Youines M. (1997): Update of WHO air quality guidelines for particulate matter in Europe. In: Proc. Int. Conference Held, Prague April 23-25 1997. Czech Medical Association J.E. Purkyně, Prague. 19-24.
- Mitchell B.W., Holt P.S., Seo K.H. (2000): Reducing dust in a caged layer room: An electrostatic space charge systém. J. Appl. Poult. Res., 9, 292-296.
Go to original source...
- Seedorf J. (2000): Emissionen von luftgetragenen Stäuben und mikroorganismen. Landtechnik, 55, 182-183.
- Spurný Z. (1985): Atmospheric ionization (in Czech). Academia Prague. 86.
- van Leeuwen R.F.X. (1997): Update and revision of WHO Air Duality Guidelines for European. European Epi Marker, No. 1, 10-12.
- Dolejš J., Toufar O., Adamec T., Knížek J. (2002): Reduction of amonia emissions from animalo production buildings (in Czech). In: Proc. Int. Symp. Nitra, Slovak Republic, Research Institute of Animal Production, Nitra. 542-545.
This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International (CC BY NC 4.0), which permits non-comercial use, distribution, and reproduction in any medium, provided the original publication is properly cited. No use, distribution or reproduction is permitted which does not comply with these terms.