I found this rooster in my feed shed this morning. His eye is swollen and draining yellow puss? The whole eye is yellow which doesn't come off and it smells rotten. I'm going to start him on tetracycline shots but can he have Penicillin? If so how many cc's ? I'm sure he will loose the eye but would it be better for me to go ahead and cull? Looks like an old injury possibly days, the infection might kill him anyways. What would you do?