Q: Greetings Dr Messo, my name is Anthony Mugatha, working for a farm. My chicks have been showing signs of paralysis, neck twisting. The feeds they are consuming have sesame as source of protein. There are two categories, the older birds of 4 months affected and the younger 2 months old do not show similar signs. I have tried calcium supplementation, but they don’t show any improvement. I thought of Mareks disease as the possible cause but not sure, what is your advice?