I picked up 6 chicks today and 2 of them could not stand on their toes. Just hobbling around on their hocks. Luckily the breeder is only a few miles away and I returned them and got 2 other chicks. From what I have researched they seemed to have a Riboflavin Deficiency. If the chicks I received have this deficiency, just not has severe, will this have long term effects. I have vitamins to give, but will that be enough?