Second Livestock is what it's called. It's a pun on Second Life. The creators think free range isn't free enough for chickens, so to give them a more humane existence while saving space, they've proposed a Chicken Matrix.
I know! The idea that you could eat your tamagotchi after it's died is also pretty cool. I'm assuming that, since they're attempting to create an environment with nothing for the chickens to fear, that death would occur while they were still plugged in and oblivious to any danger.