My rooster has had a wet cough for about 2 months now and I have no clue how to treat it. I have given him tylan, oxytet, and gallimycin. None of those have helped and he still has this wet cough. That is the only problem he has. Still is active eating drinking and just goes about his business. I need a medicine to give him because I'm getting frustrated at it not going away. The cheaper the better as far I am concerned. Thank you.