I have all of my pullets on 1/4 cc of Tylan 50 injected in the breast, once daily. Today marked the third dose. I have 6 birds that are currently receiving this medicine and all are given a dose of vitamins (roughly 1/2-1 mL) each day. The only bird I was seriuosly concerned for seems fully recovered. None of the birds are exhibiting any symptoms of a respiratory ailment and I hate to continue dosing healthy birds with needless meds. Should I continue with this round or is it safe to stop now (day 3) or tomorrow (day 4) I believe I was told here that the average round should last 5-7 days. Does that apply to birds no longer exhibiting any symptoms? Thanks in advance!