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| Winter, T.; Linke, Stefan. |
| Open stable systems with outdoor yards are used in organic cattle farming. Until now there are no emission factors in Germany for outdoor yards of dairy barns or of cattle barns generally. The measuring of the emission potential of gaseous substances (NH3, CO2, N2O and CH4) is difficult because of the size of the outdoor yards and the direct access by climate. One possibility to measure those emissions is the use of an active sampling hood. The sampling hood provides defined laminar exhaust airflow. The product of flow rate and concentration results in the emission mass flow. In a preliminary study six cattle in calf with a total of 7.19 GV had access to an outdoor yard. This was divided virtually in a 9 x 11 à 1 m² grid. To each m² a dirt level (clean,... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Dairy cattle; Air and water emissions. |
| Ano: 2017 |
URL: http://orgprints.org/31608/1/Erfassung%20gasf%C3%B6rmiger%20Emissionen%20vom%20Auslauf%20eines.pdf |
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| Mielke, Gesa; Bussemas, Ralf; Clauß, Marcus; Linke, Stefan; Weißmann, Friedrich; Georg, Heiko. |
| Ammonia emissions are an important problem in agricultural systems. Organic pig production raises a claim to offer high animal welfare. However, gaseous emissions can exhaust out of outdoor runs. Many measurement technics to determine the ammonia volatilization in animal facilities exist. In outdoor runs it is necessary to define the air volume flow. In addition, the contaminated surface of the pig-yard is heterogeneous. Therefore, it is interesting if the ammonia concentration correlate with the amount of manure. The outdoor run has been divided in a matrix. The ammonia concentrations are determined with a multi-gas monitor (INNOVA 1312) in combination with a dynamic chamber. The study showed a difference in ammonia volatilization between roofed and... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Air and water emissions; Pigs. |
| Ano: 2015 |
URL: http://orgprints.org/27169/1/27169_mielke.pdf |
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