X-Message-Number: 5682 Date: 29 Jan 96 21:55:03 EST From: Mike Darwin <> Subject: headless chickens Bob Ettinger writes: >Although I haven't seen it myself, as I understood it when I worked on a farm >many years ago, chickens seldom run after their heads are cut off. When they >do, it is because the head was cut too close, and part of the brain stem or >upper spinal cord, containing the relevant circuits, are still there. Sorry, Bob, but this isn't so. I saw chickens decapitated in my youth a great deal (as neighbors both raised and ate them). I now keep chickens (laying hens) myself (current population = 5). I normally buy adult laying hens, but used to hatch and raise. For a number of reasons it is sometimes necessary to kill my chickens: 1) When I was hatching and raising my layers, 50% of the offspring would be roosters and I could not sex them, which meant my first hint of their sex was an 0500 wake-up call. I live in a residential area UPTOWN which means an 0510 execution. (You can see why I stopped hatching my own layers!). Chickens are immobilized by grabbing them by the legs (DO NOT do this with ducks, geese or other aquatic birds; they are neither immobilized by this, nor will their delicate feet and legs tolerate the writhing around they do and you will end up with an animal with a broken leg or dislocated joint). 2) Sometimes illness or fighting amongst the hens results in an animal which must be destroyed. 3) My first-cut (no pun intended) at killing animals that needed to be disposed of was to use the method I had learned in my youth in Indiana, which was to cut off the head rapidly using an axe. Alas, my precision at this (one handed) is not the best, even with a calm (foot restrained chicken) lying there patiently, so I tended to get the neck about half-way down, this is undesireable for those who eat chickens because the neck is edible (sort of!) and you want as much of it as you can get.. Chickens' bodies do indeed run around after their heads are cut off, even with a "low cut" like mine. 4) It is however, NOT NECESSARY for them to run around, since you can simply hold them for a minute or two until they bleed out (they will be flapping their wings madly and you might well get a little bloody, which is probably why most people just let em run in the barnyard). 5) I let then run because I wanted the answer to another question which has troubled me for sometime: how long does "consciousness" persist in the severed head after decapitation? In animals undergoing anesthesia we have two simple wys to check roughly for level of consciousness: lash and corneal reflex. Put simply, you lightly brush the lashes of the eye, or gently touch the eye (cornea) itself. A conscious animal will blink in response to this stimulus. It is bit more complicated than this in anesthesia (dogs lose or recover lash reflex first, corneal second, and humans vice versa, and there is a significant difference in level of consciousness indicated by each response between the species). I let my chickens' bodies go because I wanted to evaluate corneal reflex in the severed heads: it persists for about 2-5 seconds. This is FAR too long for my tastes and I have stopped using decapitation as the method of disposing of either chickens or lab mice (the latter technique is still a standard, accepted method). Nor would I recommend it as a method for disposing "humanely" of humans or any other animal. I note there is now a proposal to restore decapitation as a means of capital punishment in Louisiana (?). 6) As my previous post (5676) pointed out, it is well established in cats that the wiring and core algorithms for walking are contained in the distal spinal cord (below the level of the diagphram). Evidence points to the same thing in human neonates, and certainly in chickens and other decapitated birds. 7) Given my practical experience in the matter, I would be very interested to see any references to the contrary. Now, for those recoiling in horror at the above and questioning my ethics, I would make the following points: 1) I keep chickens because I enjoy them and because I believe free-range conditions are decent, and the only acceptable (to me) way to get eggs. I rarely have to dispose of birds (thy have two laying cycles of about 14-16 months each) but when I do, *I* take the responsibility for it and see the consequences. It is not a task I hand off to others to do in some psychologically sanitized way. As a consequence, I have learned that an age-old, accepted "humane" method of killing birds is not really that humane, and I no longer use it. Oh yes, my lover and I, and and our other animals eat eggs, and believe they are generally good for people and many animals to eat. 2) I keep many animals, including manyy birds and reptiles, and euthanasia for hopelessly ill animals, or culling during breeding are facts of animal husbandry which cannot be escaped. For those purists who think their hands are clean by eating only vegetables (I myself am an ovo-lacto-pisca-vegetarian) I would remind you that agriculture requires the plowing of fields which results in mayhem for many of the small mammals and reptiles dwelling there. Read the poem "Of Mice and Men" if you want a graphic description of this phenomenon. Coming to terms with our nature as predators and confronting first-hand the realities of life and death is, in my opinion, critical to a HUMANIZED and psychologically healthy society. It is only the least reflective amongst us who can nuture an animal and then kill it without reflecting on our own mortality and the nature of the universe at large. It is also instructive about what "rights" really are, and where they come from. I assure you, "rights" are not something found in the barnyard or in the wild, nor are they accorded even to animals of the same species by each other. They are a construct of rational minds with carefully prioritized values. Animals do NOT have rights. But, neither is our survival, our humanity, or our agreed upon human rights served by callous handing of animals we eat or use for food directly or indirectly. I'll take a farm 4-H kid as a neighbor who has raised a sow and killed her, to the typical hooligan that roams the streets of East LA and thinks that meat is grown on trees and has never nutured or been nutured by any one in his/her life, and has never contemplated and followed through on the taking of a life for whom s/he has had responsibility for, and husbanded. As to the "self-circuit," hmmmm Bob, maybe it is in the distal spinal cord ;). Mike Darwin Rate This Message: http://www.cryonet.org/cgi-bin/rate.cgi?msg=5682