After buying a sick bird at a swap meet my whole flock has IB. Symptoms include coughing, and a few runny noses. The sick hen (named smurfette by my hubby) had a swolen face with a bubbly eye. She was treated by my local vet, and is now healthy. I need to treat the rest of the flock , and I bought Tylan 50 Injectable but now I don't know how much to use. I have LF and banties. I have read the following conflicting info: For LF give 5cc, and for banties give.25 cc; treat once But I have also found info that says to give 1-1.5 cc for 3-5 days consecutively, with no info on if this is for LF or banties. What to do? Not all birds are showing symptoms, but I want to treat them all now anyway.