One of our chickens has been diagnosed with egg peritonitis and has been on Baytril .5mg daily for a week. She has been anti-biotic free for 24 hrs and is rapidly going down hill. she has a very dirty bum and appears to be trying to pass something. Has anyone got any advice for us or should we consider having her put to sleep at the vets as we don't like the idea she may be suffering. She is approx. 3.5 years old and very loved. Many thanks.