I have a duck that seems to be having trouble breathing. She looks like she is quacking silently and with her whole body. This is non stop all day long (started yesterday). She is not eating, drinking or laying. I have Tylan powder to give her in case it is a respiratory infection, but do not know how much to give her. Since she is not drinking I cant just put it in her water, but would have to mix with water and syringe it down her throat. Anyone know If I should give it to her and if so how many mL and how many times a day?