questions: the farmers having 300 nos of broiler but 50% died one or more day by day,inspite of vaccination and medication. 
 answers: suggested to segregate the weak and healthy one seperately,beding materials to keep dry and rotate, tetracycline powder x 3-5 gm in per litre of water for 5 days, ascal x mix in water for10- 15 days, mineral mixture x mix with concentrate feed