在我国，鸭病毒性肝炎是危害养鸭业最严重的疾病之一。
In our country, DVH is one of the severe diseases threaten to duck industry.
应用自行研制的雏鸭病毒性肝炎(dvh)蜂胶灭活苗，以0。
Ducklings virus hepatitis (DVH) Propolis inactivated vaccine was applied for immunizing l-day-old ducklings, and 0.
应用自行研制的雏鸭病毒性肝炎(dvh)蜂胶灭活苗，以0。
Ducklings virus hepatitis (DVH) Propolis inactivated vaccine was applied for immunizing l-day-old ducklings, and 0.
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