January 3, 2013: The Pig Site: THE NETHERLANDS – The most humane method to euthanize animals that are in severe pain or suffer severely seems to be the use of nitrogen gas foam. By this method the animals will be unconscious within a short time through an abundance of nitrogen. The animals die in a short time, without regaining consciousness. This novel method will be extensively tested at the Swine Research Centre of Wageningen University, the Netherlands.
Read more: http://www.thepigsite.com/swinenews/31940/humane-euthanising-using-nitrogen-foam