Blissful chicken

Sorry this ain't a recipe. It is cruel to have chicken's in cages. But that's because the chickens are fearful and caged. So what if there was a type a chicken that had a brain abnormality such that it was constantly euphoric. What do I mean? Well think of a chicken constantly in a state like being high. So what if you GM modified the chickens to be blissful so even in a cage they were happy? They'd be happier than the other chickens and not worried about the slaughter house. Or you could simply have retarded chickens. The only problems (I think) stem from the fact a a euphoric organism has no reason to do anything (that's why we aren't always happy) so it may not eat so you may have to have it euphoric while it's not eating or if it's too retarded it may not think to eat.

Seems like a solution (unless you believe in bla bla "playing god" or bla bla brain is not mind in which case you shouldn't be on this blog).