Biosecurity in livestock production aims to prevent disease introduction and spread. Which practice is part of biosecurity?

• A. Quarantine new animals; sanitation protocols; controlled visitor access
• B. Allow unrestricted visitor access
• C. Crowding animals together
• D. Ignore sanitation

Answer: (A)

Biosecurity in livestock production focuses on preventing disease from entering and spreading. The best approach combines quarantining new animals before they join the main herd, following strict sanitation protocols to clean and disinfect hands, equipment, and facilities, and controlling visitor access to reduce the chance that people or gear bring pathogens onto the farm. Quarantine catches potential illnesses before they mix with the herd, sanitation lowers environmental contamination, and limited, supervised access minimizes exposure to outside sources. In contrast, unrestricted visitor access increases risk, crowding animals together stresses them and aids transmission, and ignoring sanitation leaves harmful pathogens on surfaces and equipment. Together, quarantine, sanitation, and controlled access are fundamental biosecurity practices.