You should be sure it is a respiratory infection. If it is just RNS (runny nose syndrome) it could be cleared up by simply increasing the temperature or changing the environmental conditions.
If it is a low viscosity fluid and the air passage is clear from the glotis down it is probably RNS.
If it is a high viscosity fluid and you can hear it in the throat when the head is quickly retracted it probably is a respiratory infection.
Currently there are some new antibiotics that are available for respiratory infections that work really well. A vet should be your first source for selecting the righ one. Baytril is still a fantastic broad spectrum antibiotic but should be saved for a last line of defense.
Current normal dosage for Baytril is 10mg/kg daily for 15 days. The first dosage is given as an injection and the remainder is given orally.
Because of Baytrils overusage in the hobby, many vets are reporting a buildup of bugs that are resistant to Baytril that is why it is recommended that it be use as a last resort.
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Ed
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