I use tylan 200 don't get the 50 its a waste I give half a cc for bantee size birds or 1 cc for bigger birds injection under the skin at the breast for 3 days then off for 5 days then back on for 3 days lots of sav a chick electolights for the 2 cycles works everytime from respiratory to infected cut if they are laying I dispose of eggs for the whole two weeks just to be safe I get my tylon 200 from a vet you can only find tylon 50 at feed stores but I always keep it in my first aid kitThank you! Here is one of two of my laying grls here. They will be going into the beeding pen wih the other 2 cream legbars once they get over the uri. We are using tylan antibiotics like our vet said and it's been almost a week and they are still sneezing and gurgling, just not as bad. Do I just keep giving them the antibiotic till the signs are all gone? Here is a pick of 1/2 of mylaying girls here Ibought them for 10$ each from someone cause they were moving and had to find them new homes.![]()