questions: query regarding disease of duck: 1 month old, 280 no.s of duck. 4-5 no.s died, suffering lameness and offed. 
 answers:  treatment: 1. tetracyclin powder 100 gm pkt. @ 5-6 gm daily orally for 5-6 days in the morning, with feed. 2. ambiplex 1 lit. @ 100 ml daily with water.