Sneezing is not a symptom of gapeworm, but that along with sneezing are signs of a respiratory disease. Infectious bronchitis or IB, mycoplasma or MG, coryza, ILT, and aspergillosis are common ones. Mold from wet conditions can cause aspergillosis. If she is active, alert, eating and drinking...
Tylan is given for 3-5 days. If giving injectable as a shot, I would treat for 3 days alternating different sides of the breast muscle daily. For oral administration of Tylan 50 or the soluble powder in drinking water, I would treat for 5 days. Make sure that coop ventilation is maximized, kept...
Sorry for your loss. Are you also treating for a possible respiratory disease? Tylan 50 injectable given either orally or by a shot to each chicken, or oxytetracycline, or Gallimycin in the water may help. Testing is available through your state vet or local extension service here...
If you are looking for gapeworms, they can only be seen in a dead chicken by cutting open the trachea or windpipe. Gapeworm is fairly rare, and can be confused with respiratory diseases such as ILT, MG, or coryza. Gapeworm is treated with fenbendazole (SafeGuard, Panacur) 1 ml for a standard...