Introduction

In general, ducks have fewer health problems than other domestic poultry. In commercial duck operations, significant improvements have been made in housing, nutrition, biosecurity, sanitation, and health management. Still, health problems are common, especially those due to bacterial infections. In addition to good management and sanitation, a planned vaccination program is vital to prevent diseases and raise healthy ducks. When a disease occurs in young ducklings, as in the case with duck virus hepatitis and Muscovy duck parvovirus infection, ducklings are protected through maternal immunity by vaccination of the parent flocks. The antibodies transferred through the egg yolk provide protection in progeny up to two to three weeks of age. Antimicrobial therapy with those drugs that are approved can reduce or even prevent losses due to bacterial diseases.

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