questions: asking  about the duck rearing 
 answers: floor space requirement = 3.5 sq ft per duck , breed = chara chambelli / khaki chambel , disease = duck cholera , duck plague , botulism , aflatoxicosis , salmonelosis : vaccination = duck plague ( 1.5 months , .5 ml s/c inj ) , duck cholera ( 2 months , .2 ml s/c ly ) : egg laying age = 6 months ; yearly egg production = about 250 - 280 no. per year