questions: query regarding management of duck. 
 answers:  medicine: 1. tetracycline powder 100 gm @ 1-2 gm in 1 lit. water, daily for 3-4 days, 2. vimeral 60 ml @ 10 mi ly daily  for 3-4 days, 3. ambiplex 500 ml @ 20 ml daily  4. liv-52 500 ml @ 20 ml daily. vaccine: duck plague vaccine.