After searching the entire internet (seems like) I am more confused than ever. We raise around 200 chickens all seperated by breed and age with pullets for sale and coops with our breeding stock for hatching. But about 2 weeks ago we started having 3-4 hens a few days apart begin the stumbling bit and then the cant walk bit. we thought about mereks but they continue to live in our "chicken hospital" as long as we kept food and water next to them.We gave them every vitamin there is including vitamin e. Unfortunatly last night i decided to put them down due to the cant walk bit. This evening i pulled 2 more (different ages & different coops) who looked like they had a little stumble going on. Any definate thoughts on the subject. We feed all our pullets a fairly local game bird grower feed till they get close to laying age. seems to be affecting the dominic pullets and rhode island red pullet roosters. I thank all info on this.