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Mareks is something that they have to be exposed to after they hatch. It's a type of herpes virus. If a chick is properly vaccinated and kept quarantined for at least 10 days after vaccination, they can be protected from marek's. It is not something they are hatched with.
Mareks is something that they have to be exposed to after they hatch. It's a type of herpes virus. If a chick is properly vaccinated and kept quarantined for at least 10 days after vaccination, they can be protected from marek's. It is not something they are hatched with.