Odour and ammonia emissions were measured at four intensive pig units in Ireland. Odour samples were collected on-site and analysed for odour concentration using an olfactometer. Ammonia concentrations in the exhaust ventilation air were measured using a portable sensor. The geomean odour emission rates over the four pig units were 17.2, 44.4, 4.3, 9.9 and 16.8 ouE s−1 animal−1 for dry sows, farrowing sows, first stage weaners, second stage weaners and finishers, respectively. The mean ammonia emission rates, measured at two of the units, were 12.1, 17.1, 1.4, 2.9 and 10.0 g d−1 animal−1 for dry sows, farrowing sows, first stage weaners, second stage weaners and finishers, respectively. In general, the odour and ammonia emission rates were comparable to those reported in literature, although some odour emission rate figures were noticeably lower for finishing pigs in this study. The variability in the data highlights the need for individual site assessment.
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机译:在爱尔兰,对四个集约化猪场进行了气味和氨气排放量的测量。现场收集气味样品,并使用嗅觉仪分析气味浓度。使用便携式传感器测量排气通风空气中的氨浓度。四个母猪单位的土臭气味排放率分别为干母猪,分娩母猪,第一阶段断奶仔猪,第二阶段断奶仔猪和肥育猪的17.2、44.4、4.3、9.9和16.8 ouE s-1动物-1。在两个单位处测得的平均平均氨排放率分别为:干母猪,分娩母猪,第一阶段断奶仔猪,第二阶段断奶仔猪和肥育猪12.1、17.1、1.4、2.9和10.0 g d-1动物-1。通常,尽管在这项研究中,育肥猪的气味和氨的排放率与文献报道的相当,但有些气味排放率的数字明显较低。数据的可变性凸显了对单个现场评估的需求。
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