Effect of ventilation settings on ammonia emission in an experimental pig house equipped with artificial pigs

    Onderzoeksoutput: Bijdrage aan tijdschriftA1: Web of Science-artikelpeer review


    The aim of this study was to compare the impact of 3 ventilation set-point temperatures (Tset = 21, 23 & 25 °C) on indoor climate and NH3 emission, using 2 pig compartments with underfloor air distribution (UFAD) and equipped with artificial pigs. The artificial pigs consisted of mock-up pigs to simulate heat production and a spraying installation to mimic pig urination by applying urea solution onto the fully slatted pen floors in the test compartments. The study identified ground channel temperature (TGC) as a key factor affecting NH3 emission (P < 0.001). TGC also interacted with Tset (P < 0.001) in effects on NH3 emission. When the reference Tset increased from 23 °C to 25 °C, NH3 emission decreased by 43% at TGC 15 °C and 29% at TGC 18 °C, due to the relative reduction in ventilation rate (VR). At TGC of 22 °C, NH3 emission did not differ between Tset (23 °C) and Tset (25 °C). However, when the reference Tset decreased from 23 °C to 21 °C, NH3 emission did not differ between the 2 set-point temperatures at TGC of 15, 18 and 22 °C. Further tests under practical conditions are needed to confirm these findings and to check for the impact of Tset on pig performance and carcass quality.
    Oorspronkelijke taalEngels
    TijdschriftBiosystems Engineering
    Pagina's (van-tot)125-139
    PublicatiestatusGepubliceerd - 2018

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