I would love to know this too. I had peeled a bunch today and since I didn't know for sure, I cooked them for a few minutes in the microwave- so that is an option for sure.
My chooks get potatoes...raw, cooked, peeled, sweet taters, not-so-sweet taters, etc...
You get the idea.
None have ever dropped dead from eating potatoes of any kind. They seem to relish potato peels and even like them better than apple peels.
This is something that I've been wondering about too. When I was a kid, Gramma kept a big ole enamel dishpan on the counter in the corner. During the course of the day a lot of stuff ended up in that pan, anything that was cleaned, peeled, trimmed, etc. Including potatoes. In the late afternoon she would send me out to throw the stuff into the chicken yard. The chickens were always fat and healthy, and no one worried about potatoes being bad. If anyone else has more experiences with this, I'd love to read about it.