questions: query  regarding some  duckling 
 answers: calcium & vimeral can be given as dietary supplement in production stage/ in managemental practice use of antibiotc( like enrocin 1 gm / lits of drinking water ) liver tonic ( hepawin 10 ml / 100 ducklings ) b complex ( vitaplex as recommanded ) should be given . duck plague vaccine should be given at proper time to overcome the probable infection .