Immunity and Livestock Herds

Immunity and Livestock Herds

E.J. Richey, DVM

University of Florida

Immunity is the ability of an animal to resist disease. Fortunately, immunity is a basic fact of nature; unfortunately, we take it for granted. In reality, immunity culminates from the activity of a very complex and intricate system of the body – the immune system; a system that we can to some extent enhance and manipulate to provide various degrees of protection against most disease-causing bacteria and viruses.

Present-day livestock management systems and practices may allow the immune system to be overwhelmed by either a significantly high disease challenge or by weakening the existing immune system.

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