Odour and ammonia emissions from intensive poultry units in Ireland

Abstract

Publication informationBioresource Technology, 97 (7) AbstractOdour and ammonia emissions were measured from three broiler, two layer and two turkey houses in Ireland. The broiler units gave a large range of odour and ammonia emission rates depending on the age of the birds and the season. A considerable variation between the odour and ammonia emission rates was evident for the two layer units which may be due to the different manure handling systems utilised in the houses. There was relatively little difference in the odour and ammonia emissions from the two turkey houses. As a precautionary principle, odour emission rates utilised in atmospheric dispersion models should use the maximum values for broilers and turkeys (1.22 and 10.5 ou E s -1 bird -1 respectively) and the mean value for the layers depending on the manure handling system used (0.47 or 1.35 ou E s -1 bird -1 ).

A dispersion modelling approach to determine the odour impact of intensive poultry production units in Ireland

“…Thirty-two air samples were collected over a 12 month period from broiler, layer and turkey units in Ireland (Hayes et al, 2005). After the odour concentration was established using the EN13725 European standard the air sample was presented to eight pre-screened panellists using an ECOMA T07 olfactometer.…”

“…The odour emission rates used in the dispersion models in this paper are taken from research reported by Hayes et al (2005). The odour emission rates were measured using the EN13725 European standard for dynamic olfactometry (CEN, 2003).…”

“…The maximum emission rate was utilised for broilers and turkeys due to the nature of the animal production cycle. Hayes et al (2005) reported the maximum emission rate occurred when the birds reached slaughter weight and the manure within the house was at its highest level (i.e. just before the birds are removed and the house cleaned).…”

“…This is due to the lower total odour emission rates for the IPC limits and the differences in the ventilation systems of each house type. The majority of laying houses in Ireland utilise automatically controlled mechanical ventilation which would have better odour dispersion qualities than the automatically controlled natural ventilation (ACNV) predominantly used in broiler housing (Hayes et al, 2005). ACNV is a form of natural ventilation by which the airflow through the building is regulated by adjusting the inlet and outlet vents to maintain a preset internal temperature.…”

Emissões de gases de efeito estufa e amônia oriundas da criação de frangos de corte em múltiplos reúsos da cama

“…Segundo esses autores, a diferença de manejo em reutilizar ou não a cama de frango explica os FE mais baixos para as emissões de NH3 encontrados na Europa (WATHES et al, 1997;GROOT KOERKAMP et al, 1998a;DEMMERS et al, 1999;MULLER et al, 2003;GUIZIOU;BÉLINE, 2005;HAYES et al, 2006), onde a reutilização da cama é proibida por lei, devendo o resíduo ser removido após cada lote. Já nos EUA 60 (CASEY et al, 2003a(CASEY et al, , 2003bSIEFERT et al, 2004;PESCATORE et al, 2005) a cama é utilizada por vários ciclos consecutivos (até 30 ciclos de reúso).…”