Ammonia emissions from a naturally and a mechanically ventilated broiler house in Brazil

Revista Brasileira de Engenharia Agrícola e Ambiental

Santos, Marilú S.¹  Rocha, Keller S. O.⁴  Mendes, Luciano B.⁴  Osorio S., Jairo A.³  Ogink, Nico W. M.²  Tinoco, Ilda F. F.⁴ 

[1] UFT, Araguaína;Wageningen UR Livestock Research;National University of Colombia;UFV, Viçosa

关键词: emission factor;    inventory;    ventilation rate;    tropical conditionsRESUMO Este estudo foi conduzido com o propósito de monitorar a emissão de amônia (NH3) de um galpão de frango de corte com ventilação mecânica e outro com ventilação natural (GVM e GVN;    respectivamente) e;    por fim;    calcular seus fatores de emissão de NH3 (fNH3);   

DOI  :  10.1590/1807-1929/agriambi.v18n11p1179-1185

学科分类：农业科学（综合）

来源: Universidade Federal de Campina Grande * Centro de Ciencias e Tecnologia

【 摘 要 】

This study was conducted with the aim of monitoring NH3 emissions from a mechanically and a naturally ventilated broiler house (MVB and NVB, respectively) and calculate their ammonia emission factors (fNH3). Bird stocking density was 13.5 and 11.1 birds m-2 for the MVB and NVB, respectively. The marketing age was 43 days and bedding consisted of dried coffee husks in its first time of use. Ventilation rates were calculated with the metabolic carbon dioxide mass balance method. Values of fNH3 were 0.32 ± 0.10 and 0.27 ± 0.07 g bird-1 d-1 for the MVB and NVB, respectively, and are in agreement to what was presented in other studies performed under similar conditions. The fNH3 estimated on yearly basis was 58 g bird-place-1 year-1. It was concluded that the different types of ventilation system between the studied broiler barns did not significantly affect emissions in the modeling process. The results obtained help providing reliable methodology for the determination of a solid database on NH3 emission factors for tropical conditions that can be used for future inventories, when performed in a sufficient number of barns that is representative for the Brazilian scenario.

【 授权许可】

CC BY-NC