Bessie is 20 weeks old. From day one she has sat on her hocks quite frequently, but no other sypmtoms. Last week she quit getting on the roost and slept on floor. Legs were getting progressively weak and shaky. Now she can't balance to walk. I have see her stand on both feet a few times, but only for seconds at a time.. Good appetite, no other symptoms. I have her separated and am giving her hypericum 2x daily along with vit b complex and baby aspirin. No improvement, but she isn't any worse either. I am goin to try brewers yeast also. We had to put George our rooster down last week because he had same symptoms only alot worse. I'm hoping against hope this is a thiamine deficiency.. Any other suggestions as to what I can do?