Spatial variability of litter gaseous flux within a commercial broiler house: ammonia, nitrous oxide, carbon dioxide, and methane

Poultry Science
Dana MilesD E Rowe

Abstract

Twenty-eight flocks were grown on litter in a tunnel-ventilated, curtain-sided commercial broiler house prior to this summer flock. Grid measurements were made using a photo-acoustic multigas analyzer to assess the spatial variability of litter gases (NH3, N2O, CO2, and CH4) on d 1 and 21. The pooled results for the brood and non-brood areas of the house were 1) NH3 flux was greatest in the brood area at d 1, averaging 497 mg/(m2 x h), and had a mean of 370 mg/(m2 x h) in the vacant end of the house; 2) at d 21, the non-brood area had the greater average NH3 flux, 310 mg/(m2 x h), and flux in the brood area was 136 mg/(m2 x h); 3) N2O and CH4 fluxes were <60 mg/(m2 x h); and 4) on d 1, brood CO2 flux was 6,190 mg/(m2 x h) compared with 5,490 mg/ (m2 x h) at the opposite end of the house. On d 21, these values increased to 6,540 and 9,684 mg/(m2 x h) for the brood and non-brood areas. Ammonia flux seemed most affected by litter temperature. Carbon dioxide and CH4 increased from placement to mid growout, corresponding to increased moisture, especially near the fans. Contour plots were developed using geostatistical software to visually assess the spatial disparity among the measurements. This research provides a unique view of ga...Continue Reading

Citations

Feb 5, 2008·Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes·P H PattersonM van der Grinten
Apr 13, 2020·Environmental Science and Pollution Research International·Dandan Huang, Huiqing Guo
Jan 21, 2015·Journal of Environmental Quality·April B Leytem, Robert S Dungan
Jul 21, 2017·Journal of Environmental Quality·Kyoung S RoPatricia D Millner
Aug 27, 2011·Journal of Environmental Quality·Philip A MooreIn Hag Choi
Jun 19, 2013·Poultry Science·D M MilesD E Rowe
Apr 19, 2018·Poultry Science·M G L CândidoK W Koelkebeck
Jul 31, 2021·The Science of the Total Environment·Jianan ChenYang Zeng

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