1F = 0,245 CAN$ (20/19/1998). The cost associated to the biological process of aeration are 7.35 CAN$ per marketed pig or 18.38 CAN$ per cubic meter of slurry.
Good general management of the swine production is a start to lower environmental impacts. A reduction of the nitrogen content in the feed also is a mean to lower the nitrogen excretion. Following the variable pig’s requirements will reduce the nitrogen excretion by at least 20%. Less nitrogen, less odours, less noises and the buildings integration to the landscape are ways to improve acceptance of the swine production.