[Prevention of viral hepatitis of ducks].
D000818:Animals; D004372:Ducks; D004769:Enterovirus Infections / Q000517:prevention & control / Q000662:veterinary*; D004371:Hepatitis Virus, Duck; D011201:Poultry Diseases / Q000517:prevention & control*
Iz opyta bor'by s virusnym gepatitom utiat