One of my pullet silkies has what I believe to be Vit.E deficiency. She exhibits all the posturing of encephalomalacia.I've been giving her Vit. E for 5 days without much improvement. She's bright eating and drinking well but cannot stand. I have built her a little sling to keep her upright and not flopped back with her legs in front of her. Now in retrospect I suspect this has been culminating for quite sometime as she has not been quite right and had a similar spell (very short lived after I separated her from the flock). She has become my favorite and I am trying my best to save her. I did not try selenium because I know it's easy to overdose in horses unsure about chickens Any thoughts?