Attenuation of duck hepatitis virus and evaluation of its usefulness for duckling immunization. II. Studies on application of the attenuated strain of DVH for vaccination of ducklings

• Autorzy: Gazdzinski P.
• Języki publikacji: EN

Abstrakty

EN

Studies on the possibility of application of the attenuated strain of DHV (designated as P-50) for duckling immunization against duck virus hepatitis (DVH) have been undertaken. It has been shown that minimal dose of the virus immunizing 100 per cent of ducklings was 10 3.4 EID₅₀. Strain P-50 was reisolated from the liver of vaccinated ducklings and was excreted with faeces up to 9 days postvaccination. During 10 passages in susceptible ducklings, the reversion to virulent form of the attenuated strain have not been noted. The attenuated strain P-50 of DVH induced a quicker immunization effect and higher level of neutralizing antibodies in one-day-old ducklings than vaccinal strain E-52.

• Wydawca: -
• Czasopismo: Bulletin of the Veterinary Institute in Puławy
• Rocznik: 1979
• Tom: 23
• Numer: 3-4
• Opis fizyczny: p.89-98,fig.,ref.

Twórcy

autor

Gazdzinski P.

• Laboratory of Water Fowl Diseases, The Veterinary Research Institute, Pulawy, Poland

Bibliografia

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