Ohio State University Extension Fact Sheet
Veterinary Preventive Medicine
1900 Coffey Road, Columbus, OH 43210
Biosecurity for Poultry
Teresa Y. Morishita, D.V.M., Ph.D.
Extension Veterinarian, Poultry
Ohio State University Extension
Initiating and maintaining a biosecurity program is an important
aspect of a poultry health maintenance program. It is important to
institute some aspect of a biosecurity program in order to ensure a
healthy flock of birds.
What Is a Biosecurity Program?
If we look at the word "biosecurity," we can begin to
understand its meaning. "Bio" refers to "life" and "security"
implies some sort of protection. Hence, "biosecurity" refers to a type
of program that is designed to protect life. In its simplest
meaning, it means keeping the germs away from the poultry and
keeping the poultry away from the germs.
What Types of Germs Are We Concerned About?
There are several different types of germs that are
often referred to as disease agents or pathogens. They include
viruses, bacteria, and fungi. In addition, parasites, found internally
(inside the body) and externally (outside the body), can also
cause disease. The control of these parasites is considered an
important part of a biosecurity program.
How Do We Keep the Germs Away From the Poultry?
Many procedures can be instituted to keep the germs
away from the poultry. If you consider your flock as a "clean"
flock (i.e., free of disease), then there are many ways to prevent
disease from entering your farm. Here are a few steps to consider:
- Limit visitors on your farm and restrict their direct contact with the flock.
- Obtain your birds from a disease-free source. Know the history
of the flock by inquiring about past diseases in the parent flock
and also the vaccine history of both the parents and newly hatched
- If you are adding new birds to your flock, have them quarantined
in a separate area from your main flock for at least two weeks.
- Keep free-living birds and mammals away from your flock as they
may transmit disease agents to your flock of birds.
- Obtain feed from a clean dependable source. Store feed so that
it is bird-proof, insect-proof, and rodent-proof.
- Obtain water from a clean source so it is free from potential
- Ideally, it would be best to keep your pets away from the flock
to prevent possible disease transmission.
How Do We Keep the Poultry Away From the Germs?
- Prior to the arrival of new birds, clean and disinfect their
housing to ensure that there is no build-up of potential disease
pathogens from previous flocks.
- If birds are housed on a dirt flooring, turn over the top layer
of soil. This can help reduce potential pathogens and parasites that
may be present in the soil and protect your new flock.
- Clean and disinfect all equipment and supplies on a regular
basis and definitely between flocks.
- After disinfection of the housing, it is best to keep the house
empty of birds for at least two weeks.
- Do not mix different ages or species of birds. Older birds can
pass on diseases to younger, more susceptible birds. In addition,
some diseases like histomoniasis (blackhead) can be transferred from
chickens to turkeys.
By following these biosecurity recommendations, you can ensure that
exposure to disease-causing agents can be minimized. By reducing the
exposure to disease agents, you can prevent diseases from occurring in
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All educational programs conducted by Ohio State University
Extension are available to clientele on a nondiscriminatory basis without
regard to race, color, creed, religion, sexual orientation, national origin,
gender, age, disability or Vietnam-era veteran status.
Keith L. Smith, Associate Vice President for Ag. Adm. and
Director, OSU Extension.
TDD No. 800-589-8292 (Ohio only) or 614-292-6181
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