I have a couple of chickens that might be moulting, but are sneezing and sometimes sound a little gurgly. I've been giving them vitamins, yogurt and oatmeal until we could get the antibiotics as was suggested from another post. I got both Terramyacin and Tylan. Which one should I give for this and how much? I am concerned that it's a respiratory thing, so I want to go ahead and treat it. Also...if you give antibiotics, should you ditch the eggs?