I have a rooster that I've had for about two weeks. He was fine when I first got him but into the second week, I saw that he wasn't opening his eyes and he was opening his beak when trying to breath. I assumed that he had a Respiratory problem and began giving him 125 mg of amoxicillin twice a day. He has not gotten better so I think he may have gape worm. I purchased Safe-Guard for goats to treat him. I was told to give him .23 ml per pound, but I am confused by the formula. How many ml would I give a four-pound chicken? I appreciate any help I can get on this.