In this systematic review. the PRISMA method was applied to examine publications from the last two decades that have investigated the noxious gaseous emissions from dairy barns. The aim was to analyse the outcomes from literature studies estimating the quantities of polluting gases produced in dairy barns. with a specific focus on ammonia (NH3) emissions. https://countryscenesaddleryandpetsuppliers.shop/product-category/wade-western-saddle/