Updated: January 27, 2021
By Jonathan Moyle , and Dr. Nathaniel Tablante

Internal parasites (worms) can affect all types of poultry. They are found throughout the world and can cause production losses and increased mortality in flocks. Commercial poultry producers use confinement to help prevent infections from internal parasites. Free-range backyard flocks may acquire these parasites as they interact with the environment.

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