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--Appendix 3b-- |  |
| Differential diagnosis | History taking | Clinical examination | Specimen for diagnosis | Diagnostic methods |
| 1. Newcastle 2. Mycotic encephalitis 3. Marek's disease 4. Toxicitis 5. Vitamin deficiencies |
1. Occur the 1st and 3rd week 2. Nervous sign 3. Mortality-25% 4. Vertical & horizontal transmission |
1. Paralysis 2. Prostation 3. Tremors of the head and neck |
1. Brain | 1. Antigen detection |
16. Duck parvovirus infection
| Differential diagnosis | History taking | Clinical examination | Specimen for diagnosis | Diagnostic methods |
| 1. DVH | 1. Ducklings died rapidly 2. Very high morbidity and mortality 3. Affected all breeds of ducks but not goose |
1. Acute opisthotonus 2. Droopiness, inappetence ataxia ruffled feathers 3. Watery diarrhoea 4. Surving ducks become stunted with short upper bills and a protruding tonque |
1. Liver 2. Spleen 3. Kidney 4. Intestine |
1. Virus isolation |
17. Arbovirus infection in Poultry
| Differential diagnosis | History taking | Clinical examination | Specimen for diagnosis | Diagnostic methods |
| 1. Newcastle disease 2. Avian encepholomyelitis |
1. High morbidity and mortality 2. Outbreak occurs during the mosquito season 3. Mainly outbreak in pheasant, turkey |
1. May be no clinical sign 2. Signs of CNS involvement 3. Diarrhoea 4. Prostation |
1. Brain 2. Spleen 3. Liver 4. Blood |
1. Virus isolation |
18. Viral arthritis
| Differential diagnosis | History taking | Clinical examination | Specimen for diagnosis | Diagnostic methods |
| 1. Mycoplasmosis 2. Staphylococcal arthritis 3. Salmonellosis 4. Marek's disease 5. Pasteurellosis |
1. Lameness 2. Stunt 3. Vertical and horizontal transmission 4. Low mortality |
1. Lameness 2. Swelling and inflammation of the tendon 3. Fibrosis of tendon |
1. Affected joint | 1. Antigen detection (FAT) 2. Antibody detection (ELISA, AGID test) 3. Virus isolation |
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