questions: query regarding poultry disease. 
 answers:  reply: 1. give ibd vaccine to all the birds above 12th day onward, 2. after 1wk. give r2b vaccine to all the birds of 21st day and above.3. tetracycline powder 100gm pkt. @1gm in 1lit. water, to all, fed orally daily for 7 days. to hatch large no. of chicks, use incubator.