Latest update:
I have contacted three Vets (one of them specialized in poultry) and none of them could tell me with certainty what it was. One of them mentioned mentioned it could be a case of fowl typhoid (Salmonella Gallinarum) which is treatable and not harmful to humans. To be certain I could freeze a liver sample and get it checked, but it would cost a lot more than just replacing the birds next spring. (400-1000 $), so I decided beheading would be best solution in my case.
http://www.thepoultrysite.com/diseaseinfo/130/salmonella-gallinarum-fowl-typhoid/
Reading about this and other fowl diseases made me pretty sure that it most likely is fowl typhoid. After the beheading of the remaining 6 birds I came to the following coclusion:
- All livers (even from my 3 months old, self hatched chicks) were copper colored liver (not sure if swollen - nothing to compare to)
- The (B/W) picture looks a lot like many of the livers
- All chicken were infected and morbidity was said to be up to 100 %
- Ruled out ILT, worms, all types of parasites, Marek's disease, Bird flue, Newcastle disease and Bronchitis due to lack of symptons
- Ruled out cancer since every single bird could not possible get it all at once by default.
Conclusion is that all chicken are now in chicken heaven. I know they've had a good life, so it is not so bad.
Next step is to clean out the coop and give it a good dose of chemicals to desinfect. And maybe give it another desinfection in the spring and then start all over in march/april.
Thank you all for the suggestions and help. It is highly appreciated!
I hope you all had/have a good weekend!
@
casportpony I would still love to hear from you if the
avian pathologist finds out anything