Ammonia and greenhouse gas emissions from an enriched cage laying hen facility. (April 2016)

• Record Type: Journal Article
• Authors: Alberdi, Oier; Arriaga, Haritz; Calvet, Salvador; Estellés, Fernando; Merino, Pilar
• Is Part Of: Biosystems engineering. Volume 144(2016:Apr.)
• Page Start: 1
• Page End: 12
• Publication Date: 2016-04
• Subjects: Diurnal variation -- Emission factor -- Gas concentration -- Hen manure -- Seasonality -- Ventilation rate; Bioengineering -- Periodicals; Agricultural engineering -- Periodicals; Biological systems -- Periodicals; Génie rural -- Périodiques; Systèmes biologiques -- Périodiques; 631
• DOI: 10.1016/j.biosystemseng.2016.01.009
• Languages: English
• ISSNs: 1537-5110

Abstract

Abstract : Ammonia, methane, nitrous oxide and carbon dioxide emissions were measured during a complete production cycle in an enriched cage laying hen facility under Oceanic climate conditions. Continuous monitoring of gas concentration, ventilation rate and environmental parameters were conducted from April 2012 to September 2013. The seasonal and diurnal pattern of gas emissions was analysed. Seasonality effect was found for NH3 emission, showing an average emission of 144.9 mg d −1 hen −1 and 90.3 mg d −1 hen −1 in summer and winter, respectively. On the contrary, diurnal pattern of NH3 emission did not differ between these seasons. For CO2, mean emission values did not show seasonality, although the diurnal pattern differed between winter and summer. Results obtained for CH4 and N2 O emissions did not provide sufficient evidence to determine either seasonality or diurnal effect on these gases. An NH3 emission factor of 7% of total N in manure was defined for this system. These losses increased at higher ventilation rates and lower belt cleaning frequencies. Thus, NH3 mitigation strategies at housing level should consider both parameters. Further studies would be necessary to determine how these factors regulate NH3 emission at laying hen houses. Highlights: NH3 and GHG emissions were measured during a cycle in an enriched cage hen facility. Fan activity, fan calibration and pressure drop were used to get ventilation rate. CO2 emission was constant, with a distinct diurnal pattern in summer and winter. Ventilation rate and manure management are key in NH3 emission. Ammonia emission factor of 7% total N manure was obtained for an enriched cage hen system.