책임운영기관 농촌진흥청 국립축산과학원 (로고)

Swine barns often experience extreme temperature fluctuations, making it challenging to maintain optimal conditions for both animal welfare and reducing environmental impact. In hot weather, increased ventilation, while necessary for cooling, can inadvertently lead to higher ammonia emissions. Conversely, reducing ventilation in cold weather to conserve heat can worsen indoor air quality. This study investigated the effects of a ground channel ventilation system on ammonia emissions from swine barns. This system utilizes an underground air passage to moderate incoming air temperature. By pre-tempering the air, the system enables higher ventilation rates even in cold weather, improving air quality without compromising barn temperature. Furthermore, it reduces the need to maximize ventilation for cooling during hot weather, thereby helping to lower ammonia emissions. The results demonstrated that this system helped stabilize ammonia emissions across seasons. In conclusion, controlling inlet air temperature offers a promising strategy for managing ammonia emissions and promoting a more sustainable swine production system.