This is just something I have often wondered about, they produce these chicks so fast and so many it's got to be causing something to break down in the make up [genes] of these birds. Like being egg bound or prolaspes my aunt and uncle who had a farm years and years ago never heard of this stuff. It's kind of like breedings in puppy mills and etc. these animals always have genetic disorders. Why not from chicks as well since they are massed produced by the millions. Just something to think about. Did you vet say anything about her liver? Is she eating and drinking on her own? Have you tried giving her kifer or yogurt?