Question:  query regarding  some broiler  showing the respiratory signs suspected mycoplasma & bordetella bronchoseptica infection 
Answer: give tetracycline powder  1.5 gm/ lits of water  --- give tetracycline hydrochloride powder @ 1.5 gm / lits of water for 4-5 days / suldin solution  with drinking water as directed in the 2 nd half of the day , adjust & warm the room temperature  according to the need