Kienyeji (indigenous) chickens are susceptible to various diseases, some of which can be fatal if not treated promptly. Here are some common Kienyeji chicken diseases, their symptoms, and treatment options:

1. Newcastle Disease: Symptoms include respiratory distress, sneezing, coughing, and watery eyes. This is a viral disease, and there is no cure, but a vaccine is available to prevent it.
2. Fowl Pox: Symptoms include raised scabby lesions on the face, comb, and wattles. It’s a viral disease, and there is no cure, but vaccination can prevent it.
3. Coccidiosis: Symptoms include diarrhea, loss of appetite, and decreased activity. It’s caused by protozoan parasites and can be treated with anti-coccidial drugs.
4. Avian Influenza: Symptoms include respiratory distress, fever, and sudden death. This is a viral disease, and there is no cure, but a vaccine is available to prevent it.
5. Marek’s Disease: Symptoms include paralysis, loss of appetite, and weight loss. It’s a viral disease, and there is no cure, but vaccination can prevent it.
6. Gumboro Disease: Symptoms include diarrhea, loss of appetite, and depression. It’s caused by a virus and can be prevented by vaccination.
7. Fowl Typhoid: Symptoms include high fever, diarrhea, and sudden death. It’s caused by bacteria and can be treated with antibiotics.
8. Infectious Bronchitis: Symptoms include respiratory distress, nasal discharge, and watery eyes. It’s caused by a virus and can be prevented by vaccination.

It’s important to consult a veterinarian or poultry expert if you suspect that your Kienyeji chickens are sick. The expert can help you diagnose the disease and recommend the appropriate treatment or preventive measures. Additionally, practice good biosecurity measures such as disinfecting the chicken house, controlling pests and rodents, and limiting visitors to the farm to prevent the spread of diseases.