Kooiker - 3/13/2016 06:55
durk - 3/12/2016 16:45 Sounds like arthritic myco. Predef and Linco are the meds of choice. Separate them or they will be beaten by the rest and perish.
The lame rear legs sounds like Myco but in my experience they don't usually die from it, they just drag their rear end around for a while and usually get back up on their own provided the pen mates don't beat them up.
Johnny is thinking Strep but that's usually laying completely flat on their side paddling, not just the rear legs lame.
If there has been more than one I'd get a vet out to take some samples to send in for testing.