<abstract xmlns="http://www.w3.org/1999/xhtml"><p>The paper presents the results of research on indoor ammonia (NH3) concentrations in the air in a free-stall barn. The differences in measurement results mainly depended on the season and weather conditions. The study also showed a significant correlation (P&lt;0.01) between the NH3 concentration and temperature, relative humidity and air movement velocity inside the barn. The lowest NH3 concentration was recorded in the summer (0.0 ppm) in the presence of high air temperatures, low humidity and increased exchange of ventilated air. In winter during severe frosts, highest ammonia concentration (8.0 ppm) was noted, caused by limited ventilation. The highest daily ammonia concentration was usually recorded during the night. This was due to increased relative air humidity and low air velocities. It was concluded that the average level of ammonia of 2.73 ppm during the entire year was significantly below values defined as harmful for animals and people.</p></abstract>

The paper presents the results of research on indoor ammonia (NH3) concentrations in the air in a free-stall barn. The differences in measurement results mainly depended on the season and weather conditions. The study also showed a significant correlation (P<0.01) between the NH3 concentration and temperature, relative humidity and air movement velocity inside the barn. The lowest NH3 concentration was recorded in the summer (0.0 ppm) in the presence of high air temperatures, low humidity and increased exchange of ventilated air. In winter during severe frosts, highest ammonia concentration (8.0 ppm) was noted, caused by limited ventilation. The highest daily ammonia concentration was usually recorded during the night. This was due to increased relative air humidity and low air velocities. It was concluded that the average level of ammonia of 2.73 ppm during the entire year was significantly below values defined as harmful for animals and people.

Ammonia concentrations in a free-stall dairy barn

Department of Rural Building, University of Agriculture in Krakow, al. Mickiewicza 24-28, 30-059 Kraków, Poland

Annals of Animal Science

{"article-title":"Ammonia concentrations in a free-stall dairy barn"}

The paper presents the results of research on indoor ammonia (NH3) concentrations in the air in a free-stall barn. The differences in measurement results...

Ammonia concentrations in a free-stall dairy barn

Published Online: Feb 13, 2014

Page range: 153 - 166

DOI: https://doi.org/10.2478/aoas-2013-0065

Keywords
ammonia concentration, indoor air quality, indoor bioenvironment, dairy barn

This content is open access.

Ammonia concentrations in a free-stall dairy barn

Published Online: Feb 13, 2014

Page range: 153 - 166

DOI: https://doi.org/10.2478/aoas-2013-0065

Keywordsammonia concentration, indoor air quality, indoor bioenvironment, dairy barn

This content is open access.

Keywords
ammonia concentration, indoor air quality, indoor bioenvironment, dairy barn