How long to wait before a second course of antibiotics?

[BuckeyeFoodie]

I have a silkie pullet that I strongly suspect of having coryza so I treated her with all-in-one powder from pigeon supplies plus for five days via tube, and she's been doing much better, but she still has one eye swollen shut that I have been treating topically with triple-antibiotic. It has been about 10 days since her last dose, and the eye is still not much better. Should I do another five days of the all-in-one?

 

[Eggcessive]

Do you have pictures? Is her eye swollen with pus, and does she have a bad odor? Without testing, it is hard to tell exactly what respiratory disease that you may be dealing with. MG (mycoplasma) is more common, but doesn’t smell horrible as coryza is said to. You may need to try to get any pus out of the sinus and around the eye, if that is why the eye is not improving. I would try to get her tested. I would close my flock to any birds going out or coming into my flock. Personally, I would cull birds with coryza. If it was MG, I would try treating with Tylosin or Baytril and close my flock. Here is a graphic video of removing pus from behind the eye:

 

[BuckeyeFoodie]

The eye doesn't have pus, and isn't swollen, just isn't opening up either. Also, no bad smell, and she never had a bad smell. So maybe MG? I just figured coryza because Google...