Please update your thread whatever happens, and with any necropsy results, since it helps others.
Chickens developing Slow Growing Disease/Sickeness and Dieing - Page 2
Featured Stories on BackYard Chickens
Were you able to get necropsy results?
Have you treated for Cocci by any chance?
Dosage for Cocci is 1 1/2 teaspoons Corid powder per gallon or 2 teaspoons of 9.6% Corid liquid per gallon
Give for 5-7 days - make sure this is the ONLY water available during that time period. Mix a fresh batch at least once a day.
Video mid page, shown in younger chicks, but can affect older birds under certain conditions - video is sad so view with your discretion.