@rebrascora, can you answer the question about poultry grade acidified copper sulfate in the UK?
To OP: I recently treated a girl for doughy crop. I really wasn’t sure if it was impacted, sour, slow, or doughy. I finally agreed with @TwoCrows that it was a doughy, based on how the hard mass felt. The crop would get squishy late in the day when she filled up with fluid, but then drain overnight leaving a bit of a mass. The mass itself was kind of hard, but actually a bit pliable. I have been treating aggressively for yeast infection, and she’s made amazing progress.
Anyway, my opinion is that you are dealing with a yeast infection. As @Texas Kiki pointed out, it may be caused by something else, but I would still treat it. Just my 2¢.
Edited for typos.
To OP: I recently treated a girl for doughy crop. I really wasn’t sure if it was impacted, sour, slow, or doughy. I finally agreed with @TwoCrows that it was a doughy, based on how the hard mass felt. The crop would get squishy late in the day when she filled up with fluid, but then drain overnight leaving a bit of a mass. The mass itself was kind of hard, but actually a bit pliable. I have been treating aggressively for yeast infection, and she’s made amazing progress.
Anyway, my opinion is that you are dealing with a yeast infection. As @Texas Kiki pointed out, it may be caused by something else, but I would still treat it. Just my 2¢.
Edited for typos.