I have a brahma/leghorn mix that is 6 to 7 months old that can not stand and her neck is twisting under. No nasal discharge or running or cloudy eyes. She will eat and drink on her on and is alert with red comb and wattles. She was hatched out of my own stock and no one else has these symtoms. I've also check food for mold. I have been giving her scrambled eggs, baby vitamin without iron and duramycin-10 for two days which contain tetracycline. I also have Terramycin which has oyytetracycline HCI. I don't know how much to mix of either and want to do it with a dropper. I have been adding about 1/8ts to a little water and dissolving and been giving that to her through dropper. Does any one know what can be wrong and what dosage should be given and how many times a day?