We have 120 broilers in two 10x12 tractors. We have one that wouldn't walk and was shivering, so we took it it to the garage. It's been in the garage for three days with off and on heat lamp. It's eating a little, drinking, and pooping. But it still won't put weight on it's right leg. Today, I held it up, and it really tried to put weight on it, but couldn't. No obvious signs of a break, but when I touch the leg, it shakes it's tail feathers. Two weeks left until processing. Thoughts or advice?