Duck Hepatitis Virus (DHV) is a highly contagious viral disease that primarily affects young ducks and ducklings. It belongs to the family Picornaviridae and is classified into three serotypes - DHV-1, DHV-2, and DHV-3.
DHV primarily affects the liver of ducks, leading to inflammation and necrosis in the organ. The virus is transmitted through the orofecal route, primarily through contaminated water sources or direct contact with infected ducks. It can also be spread via contaminated equipment, feed, or clothing.
Symptoms of DHV infection include decreased appetite, lethargy, weakness, and ruffled feathers. Ducks affected by DHV may exhibit yellowish discoloration of the skin and eyes, which are characteristic signs of liver damage. Mortality rates can be high, especially in young birds, and survivors may continue to experience reduced growth rate and compromised liver function.
Prevention and control strategies for DHV involve strict biosecurity measures, such as regular disinfection of facilities and equipment, and isolation of infected birds. Vaccination is available for some serotypes, but its effectiveness may vary. It is vital to maintain proper hygiene, cleanliness, and good management practices in duck rearing to minimize the risk of DHV transmission.
In conclusion, Duck Hepatitis Virus is a viral disease that primarily affects young ducks, causing liver inflammation and necrosis. It is highly contagious and transmitted through the orofecal route. Prevention and control involve strict biosecurity measures and, in some cases, vaccination.
