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i) Chicken, turkeys, pigeons and ducks.
ii) Causal organism
- Virus
- Birna virus
iii) Incubation period
- 2 - 3 days
iv) Symptoms of attack
? Glands above the vent become swollen.
? Decrease in egg production.
? Birds develop respiratory distress
? There is loss of appetite.
? Affected birds show low water intake.
? Severe immuno-suppression / birds become
susceptable to other diseases.
? In hot weather and high humidity conditions the
death rate (mortality rate) increases.
Control
(2 marks)
? Vaccination
? Use vitamins (especially B12)
c)
- Milk fever
- Bloat
john3 answered the question on January 7, 2018 at 07:23
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