Recently I lost a hen with many of these same symptoms. Aside from each case being unique, the progress I expect when treating a chicken will usually follow a simple pattern. Since most of the time we are treating symptoms, we begin with the most obvious and easy to treat and move up the scale from there watching to see signs of improvement. Often we do see an immediate change for the better after one or two tries. It's not something hard to miss.
When there is no improvement after trying to treat all that is obvious, and this is what happened at the beginning of this month with my hen, there is little choice but to accept that a much more serious chronic issue is underlying all of the symptoms. My hen never showed improvement, became more listless, lost more and more weight, and finally I accepted that the end was imminent. She died early on New Years Day.
This hen is following the same pattern. The only "progress" is in the direction of declining. I don't see that any other treatments would be of value here.
When there is no improvement after trying to treat all that is obvious, and this is what happened at the beginning of this month with my hen, there is little choice but to accept that a much more serious chronic issue is underlying all of the symptoms. My hen never showed improvement, became more listless, lost more and more weight, and finally I accepted that the end was imminent. She died early on New Years Day.
This hen is following the same pattern. The only "progress" is in the direction of declining. I don't see that any other treatments would be of value here.