Chicken frames

I found a place to get some chicken carcasses.buddy said 50 for $50.
what would i use them?.
just for the bone and add meat to it.or what.

Also found a place to get fresh green tripe for $3.99 lb.they have a farm and slaughter there own.they were both at the market.

Sure, you could use them for the bone content of his diet and just add some boneless meat, but chicken frames alone (I'm assuming there won't be much meat left on them) are too boney to feed by themselves.
I think Technodoll uses chicken frames to make her ground mix so if you're a grinder, you could do that as well.