- Jan 5, 2014
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Hi, I'm glad I happened upon your post. I am also interested in humanely killing chickens for home consumption, did some research and have a plan to build a small box to humanely dispatch them. It turns out that you can humanely gas them with a gas mixture used to for certain types of welding called C20 or C25 (80% argon, 20% carbon dioxide or 75% argon, 25% carbon dioxide respectively) which is used in welding as a shielding gas (gets rid of oxygen while welding). Here is an article that discusses it: http://www.upc-online.org/nr/33005co2.htm. This mixture is heavier than air and the CO2 is a low enough concentration so that they do not get breathless and feel like they are suffocating, the oxygen in their lungs gets displaced by the mixture and they pass out due to what is known as hypoxia/anoxia (interchangeable terms for losing consciousness due to lack of oxygen). In order to minimize distress I'm thinking of making a small foam box by cutting up a piece of corning foam -- http://www.homedepot.com/s/corning%20foam?NCNI-5, ($18). I will make it big enough to put a small chicken cage into and will make it airtight by taping and caulking the inside seams and put a coupler in the side for hooking up a gas line to the welding bottle gas. I will put the chicken in the cage and allow it some time to come to a restful state, move the cage into the box, close the lid and turn on the gas. Since the mixture is heavier than air it seems it would be better to put a coupler attached to a piece of hose through the side of the box (coupler outside, hose inside) in the bottom of one side of the box and a small tube in the top of the opposite side. This would allow the gas to fill from the bottom to the top and force out the air. When a match will no longer stay lit in front of the nozzle where the air exits then all of the oxygen is depleted from the box and you could cap the vent and turn off the gas feed. Give it a minute or two and the chicken should be unconscious or dead. I don't have any chickens yet myself or I would post how this works out. I may have chickens next year. If anyone gives this a go or something better I'd like to hear about it. Nice to see others care about the welfare of the animals we share the planet with.