Found this on another site. tylan is injectible and probably faster acting for it. You can inject under the skin at the back of the neck. This person gives it orally but they need to get all of each dose, very hard if they are not eating are drinking.
"If you have, say, a 1.3 kg bird and you want to know how much tylan to give it at a dose of 35 mg/kg. You know that you need to multiply 35 mg x 1.3 as this is the weight (in kg) of the bird. This tells you that your bird needs (35mg/kg x 1.3kg = 45.5 mg). Now you know how many mg you bird needs, but how much tylan is that? Well, if there's 200 mg/ml in tylan 200, then (you can use cross-multiplication too for this) divide 200 mg/ml into 45.5 mg to tell you how many ml you need. 45.5 mg / 200 mg/ml = .2275 ml which is 0.23 cc or 23 units. On a 1 cc syringe, it is very easy to measure out 23 units of tylan. Then you would give this orally, three times per day. I suggest orally, because poking your chicken in the breast muscle three times per day can damage the muscle and cause bruising etc. If you draw up the drug, ALWAYS use a sterile syringe and needle and don't use the same syringe to draw it up as the one you use to squirt it into their mouths - I prefer to mix the drugs with babyfood to help it taste a little better."