Hmmm interesting, I am just going to put these links out there, might need to plant even more spuds and really consider some of the info in here..
Very, Very interested in them in regards to the chicken feed, they must be cooked but for a small flock owner, and with the amazing price of feed, being able to take it to 50 percent cook potato with 50 your grain mix, that is a lot of savings over the year..
The only way to see if this would work as well as they say is to do a trail flock.. What say you? Should I do a little feeding and raising experment?
Normally when you heard about potato’s and chickens, its don’t feed them and that is true if its raw, but not true if they are cooked, same with the pigs, they need their spuds cooked but sheep, cows and horses do not, they just need to be carefully done in terms of feeding percents.
Very, VERY interesting on the study that showed that potato’s done in the correct way for fatting lambs could outfatten even corn, but of course the work load is harder and the requirements for storage harder, I can see why this would not catch on in N.A. with all our ability to grow and store grains but for a small loop farmer, this is very very interesting, I have feed lots of cooked potato’s to my pigs but never feed them to any of the other critters.
Do you or do you remember your grandparents using potato’s as livestock feed?
http://www.umaine.edu/umext/potatoprogram/Fact%20Sheets/FeedingLivestock.pdf
Just another Day on the Farm 
All I know about this is reading in an old cookbook that frost-hit potatoes are still useful as animal feed, which indicates that non-frost-hit potatoes must be good, too. 🙂