Feedlot Biosecurity Facility Design

By Dr. Zubair Khalid, DVM, MS, PhD · 2026-08-14

Key Takeaways

• Spatial Separation and Airflow Management: Incoming animals must be isolated in a dedicated receiving area for 21-28 days, situated downwind and downhill from resident herds to mitigate aerosol transmission of pathogens like Mannheimia haemolytica and Bovine Viral Diarrhea Virus (BVDV).
• Controlled Traffic Flow and Entry: Implement a single, controlled entry point for all vehicles and personnel, equipped with logbooks and disinfection stations (wheel wash/dry disinfectant pits), to prevent fomite transmission by meticulously managing movement from clean to dirty zones.
• Dedicated Hospital Area Design: The hospital pen, housing sick animals, should be located at the perimeter, downwind from main pens, with independent drainage and solid walls to contain pathogens and minimize stress, reducing direct contact and aerosol spread.
• All-In, All-Out Management and Pen Hygiene: Grouping animals by arrival date and emptying pens simultaneously, followed by thorough cleaning and disinfection, breaks disease cycles by preventing commingling of animals with differing health statuses and minimizing oral-fecal transmission routes.
• Fomite and Vector Control: Regular cleaning and disinfection of shared equipment, chutes, and processing facilities between groups, alongside integrated pest management strategies targeting flies and rodents, are critical to interrupt fomite and vector-borne transmission of pathogens like Salmonella and E. coli.
• Comprehensive Recordkeeping and Monitoring: Maintain detailed, three-year minimum records of animal movements, health events, treatments, and visitor entries to facilitate disease tracing and identify trends, enabling prompt intervention for reportable diseases such as Foot and Mouth Disease.

Cattle feedlots concentrate large numbers of animals in a relatively small area, which makes them vulnerable to the rapid spread of infectious disease. A single sick animal can expose hundreds or thousands of penmates through shared water, feed, and contact surfaces. This guide explains how to design, build, and operate a feedlot with biosecurity as a core principle. It covers site layout, perimeter controls, animal movement patterns, cleaning and disinfection protocols, visitor management, recordkeeping, and the decision points where you should call a veterinarian or extension agent. The intended audience includes feedlot owners, managers, animal health staff, and anyone planning a new facility or upgrading an existing one.

At a Glance

• Separate incoming animals from the resident herd for at least 21 to 28 days in a dedicated receiving area located downwind and downhill from healthy animals.
• Orient the feedlot so that prevailing winds carry dust and aerosols away from hospital pens, the processing area, and the office.
• Create one-way traffic flow for animals and vehicles so that trucks, feed carts, and people move from clean areas to dirty areas without backtracking.
• Place the hospital pen at the perimeter of the lot, not in the center, and give it its own drainage away from the main lot runoff.
• Install a single controlled entry point for all vehicles and visitors, with a logbook, wheel wash or dry disinfectant pit, and a designated parking area.
• Clean and disinfect equipment, chutes, and processing facilities between groups of cattle, not just at the end of the season.
• Maintain a written biosecurity plan that names one person as the biosecurity manager and includes a protocol for disease outbreaks.
• Keep records of all animal movements, health events, treatments, visitor entries, and cleaning procedures for at least three years.
• Call a veterinarian immediately if you see signs of a reportable disease such as foot and mouth disease, bovine spongiform encephalopathy, or vesicular stomatitis.

Why Feedlot Biosecurity Matters

Feedlots are high-density livestock operations. Animals stand close together, share feed bunks and water troughs, and breathe the same dust-laden air. These conditions amplify the transmission of pathogens that cause respiratory disease, digestive disorders, and contagious infections. Bovine respiratory disease complex, for example, is the leading cause of morbidity and mortality in feedlot cattle, and the stress of transport and commingling makes newly arrived animals especially susceptible.

Biosecurity in a feedlot is not the same as biosecurity on a cow-calf operation. A cow-calf herd is relatively closed, with animals born on site and kept for years. A feedlot is an open system. Cattle arrive from many sources, stay for a few months, and then leave for processing. Each load of incoming cattle carries the disease history of its farm of origin, the conditions of the truck ride, and the exposure risks of the auction market. This constant turnover means that feedlot biosecurity must focus on managing the flow of animals, people, equipment, and vehicles across the boundaries of the operation.

A well-designed feedlot reduces the number of disease introductions and slows the spread if an outbreak occurs. The design decisions you make during planning are often the cheapest and most effective disease prevention measures available. Moving a hospital pen or changing the direction of a drainage ditch is difficult after the concrete is poured. Thinking through these issues on paper before construction saves money and prevents disease losses later.

The economic case for biosecurity is straightforward. Respiratory disease outbreaks can reduce average daily gain, increase treatment costs, and raise death loss. A single severe outbreak can erase the profit margin on an entire pen of cattle. Preventing disease through facility design and management protocols costs far less than treating sick animals or replacing dead ones.

Understanding Disease Transmission in Feedlots

To design an effective biosecurity plan, you need to understand how diseases move through a feedlot. Pathogens spread through several routes, and a good facility design blocks as many of these routes as possible.

Direct contact is the simplest route. An infected animal touches a susceptible animal through nose-to-nose contact, grooming, or breeding. In a feedlot, cattle are packed closely together, so direct contact is constant within a pen. The design goal is to prevent contact between different groups, especially between incoming animals and the resident herd.

Aerosol transmission occurs when pathogens travel in droplets or dust particles through the air. Respiratory viruses and bacteria such as infectious bovine rhinotracheitis, bovine viral diarrhea virus, and Mannheimia haemolytica can spread this way. Wind carries these particles over considerable distances, so pen placement relative to prevailing winds matters. Hospital pens and receiving areas should be downwind of the main herd so that airborne pathogens blow away from healthy animals.

Fomite transmission involves contaminated objects. Trucks, trailers, chutes, squeeze gates, sorting sticks, halters, syringes, and even your boots and clothing can carry pathogens from one animal to another. Many feedlot disease outbreaks trace back to a shared piece of equipment or a truck that was not cleaned between loads. Facility design should include dedicated equipment for the hospital area and a cleaning station where portable equipment can be washed and disinfected.

Oral-fecal transmission occurs when animals ingest feed or water contaminated with manure. This route is especially important for pathogens like Salmonella, E. coli, and some parasites. Feed bunks and water troughs must be positioned and constructed so that manure cannot easily contaminate them. Drainage should carry runoff away from feed and water sources.

Vector-borne transmission involves insects, rodents, birds, and other animals that carry pathogens. Flies can mechanically transfer bacteria from manure to feed and water. Birds can introduce pathogens through droppings. Rodents can carry leptospirosis and other diseases. Facility design should include pest control measures such as sealed feed storage, bird netting over water troughs, and regular manure management to reduce fly breeding sites.

Site Selection and Layout

The first biosecurity decision is where to put the feedlot. Site selection influences drainage, wind patterns, and the ability to separate clean and dirty areas. If you are planning a new feedlot, evaluate potential sites for the following characteristics.

Choose high ground with good natural drainage. Feedlots generate large volumes of manure-laden runoff, and you need to control where that water goes. A site with a slight slope allows water to drain away from animal pens and into a collection system. Avoid low-lying areas that flood or stay wet, because standing water creates ideal conditions for pathogen survival and insect breeding.

Consider prevailing wind directions. In most regions, wind comes from a dominant direction during the growing season. Place the feedlot so that prevailing winds blow from the clean areas toward the dirty areas. The office, feed storage, and processing facility should be upwind of the animal pens. The hospital pen and manure storage should be downwind of everything else. This arrangement means that dust and aerosols from sick animals blow away from healthy animals and from the people who work there.

Separate the feedlot from neighboring livestock operations. The exact distance depends on local regulations and the type of neighboring operation, but a buffer of at least 500 feet is a reasonable starting point. This distance reduces the chance of aerosol and vector transmission between operations. Talk to your extension agent about recommended separation distances for your area.

Plan the internal layout around a clean-to-dirty gradient. The cleanest areas are the office, feed storage, and equipment parking. The processing area is moderately dirty because animals pass through it. The animal pens are dirty. The hospital pen and mortality compost area are the dirtiest. Arrange these zones so that people and vehicles move from clean to dirty as they go about their work, and so that they do not have to cross back through dirty areas to reach clean ones.

The receiving area deserves special attention. Incoming cattle are the highest-risk animals on the lot because their health status is unknown. Place the receiving area at the perimeter of the feedlot, separate from the main pens, and downwind of the resident herd. This location allows you to unload, process, and observe new arrivals without exposing the main herd. The receiving area should have its own chute, scale, and handling facilities so that incoming cattle do not have to pass through the main processing facility.

Perimeter Controls and Entry Points

A feedlot needs a clear physical boundary that controls the movement of animals, vehicles, and people. A perimeter fence serves several purposes. It keeps cattle in, keeps wildlife and stray animals out, and defines the entry points where biosecurity protocols apply.

Install a perimeter fence that is at least five feet high and strong enough to contain cattle and exclude deer and other wildlife. Wildlife can carry diseases such as bovine tuberculosis and anaplasmosis, so the fence should be in good repair with no gaps or low spots where animals can cross. Consider a wildlife-proof gate at any point where the fence crosses a drainage or natural travel corridor.

Limit vehicle access to a single controlled entry point. This gate should be locked when not in use and staffed or monitored during operating hours. All vehicles entering the feedlot should pass through this point so that you can record their arrival, inspect them for cleanliness, and direct them to the appropriate parking area. A second gate for emergency access is acceptable, but it should remain locked and be checked regularly.

The entry point should include a visitor station with a logbook, a place to sign in, and a designated parking area. Visitors should park outside the animal production area and walk or be driven to the office. This arrangement keeps visitor vehicles away from the pens and reduces the chance of bringing in contaminated tires or undercarriages.

Consider installing a wheel wash or dry disinfectant pit at the entry point. Trucks that have been to other livestock operations, auction markets, or rendering plants can carry pathogens in mud and manure on their tires and undercarriages. A wheel wash that uses high-pressure water and disinfectant removes this contamination before the truck enters the lot. Dry disinfectant pits, which are shallow troughs filled with a disinfectant-impregnated aggregate, are an alternative in cold climates where water freezes.

Post clear signage at the entry point that explains the biosecurity rules. The sign should state that all visitors must check in, that no one enters the animal area without permission, and that anyone who has been on another livestock operation in the past 48 hours should report this to the manager. This last rule is important because boots and clothing can carry pathogens from one farm to another.

Animal Flow and Pen Layout

The arrangement of pens and the direction of animal movement are critical biosecurity design elements. The goal is to create one-way flow so that animals, people, and equipment move from clean areas to dirty areas without crossing back.

Design the feedlot so that incoming cattle enter at one end and move through the facility in a predictable pattern. New arrivals go to the receiving area, where they are unloaded, processed, and placed in quarantine pens. After the quarantine period, they move to their final growing and finishing pens. When they are ready for market, they leave through a loading chute at the opposite end of the facility. This flow pattern means that animals never move backward toward cleaner areas.

Within the pen area, arrange pens so that animals of similar health status are grouped together. This arrangement is called all-in, all-out management. You fill a group of pens with animals that arrive together, keep them together for the entire feeding period, and empty them together. When the group leaves, you clean and disinfect the pens before the next group arrives. This system prevents the constant commingling of animals at different stages of health and reduces the chance of a disease cycling through the entire lot.

Pen spacing matters. Leave enough space between pens that cattle cannot make nose-to-nose contact through the fence. A minimum of 10 to 15 feet between pens is a good rule of thumb, though this distance may need to be greater if you are feeding high-risk animals. Solid pen dividers provide an additional barrier against aerosol and direct-contact transmission. If solid dividers are too expensive, use double fencing with a gap between the two fences.

Each pen should have its own feed bunk and water trough. Shared feed and water equipment is a major route of disease transmission because a sick animal contaminates the surface and the next animal uses it. Dedicated equipment per pen is more expensive, but it is one of the most effective biosecurity investments you can make. If you must share equipment, clean and disinfect it thoroughly between pens.

The processing facility, where cattle are vaccinated, treated, and tagged, is a high-risk area because animals from different groups pass through the same chute and squeeze. Design the processing facility for easy cleaning. Use smooth, nonporous materials for the floor and walls, and install a drainage system that carries wash water away. The chute and squeeze should be positioned so that animals enter from the receiving area and exit toward the main pens, not the reverse.

The Hospital Pen and Treatment Area

Every feedlot needs a hospital pen for sick and injured animals. The design of this area is one of the most important biosecurity decisions you will make. A poorly placed hospital pen can spread disease throughout the entire lot, while a well-designed one contains the problem.

Place the hospital pen at the perimeter of the feedlot, as far from the main pens as practical. It should be downwind of the healthy animals and have its own drainage that flows away from the rest of the lot. This placement ensures that pathogens shed by sick animals do not reach healthy ones through the air or in runoff.

The hospital pen should be smaller than the regular pens, with a capacity of about 2 to 5 percent of the total feedlot capacity. It should have solid walls or high solid panels to reduce aerosol spread and to give sick animals a quiet, low-stress environment. Provide good bedding, shelter from wind and weather, and easy access for veterinary care.

Give the hospital area its own equipment. This includes a chute or head gate, sorting panels, and treatment supplies. Never share equipment between the hospital area and the main pens without cleaning and disinfecting it first. Dedicated equipment for the hospital area is a simple rule that prevents a major route of disease spread.

The treatment area should include a washable surface, a water supply, and a way to contain and dispose of runoff. When you treat a sick animal, you need to be able to clean up blood, manure, and other contaminants without sending them into the main lot drainage. A concrete pad with a sump or a collection basin is ideal.

Have a clear protocol for moving animals to and from the hospital pen. A sick animal should be moved directly from its home pen to the hospital pen without passing through other pens or alleys that healthy animals use. If this is not possible, move the animal at a time when the alleys are clear and clean the area afterward. Animals that recover and return to their home pen should be observed for a few days to make sure they are not still shedding pathogens.

Drainage and Manure Management

Water and manure management are central to feedlot biosecurity. Manure contains pathogens, and water carries them. A facility that controls drainage and manages manure properly reduces the risk of disease spread both within the feedlot and to neighboring operations.

Design the feedlot so that all runoff is contained on site. This is not just a biosecurity measure, it is also an environmental requirement in most jurisdictions. Runoff from animal pens contains manure, urine, and pathogens. It should flow into a collection system such as a settling basin or a detention pond, where it can be treated or applied to cropland at an appropriate rate.

The drainage pattern should follow the clean-to-dirty gradient. Clean areas such as the office and feed storage should drain away from the animal pens. Dirty areas such as the hospital pen and manure storage should drain into the collection system and not toward clean areas. This arrangement prevents contaminated water from flowing across the feedlot and spreading pathogens.

Pen surfaces should be designed for good drainage. A slight slope of 2 to 4 percent from the feed bunk to the back of the pen allows water to run off and keeps the area around the feed and water clean. The surface should be compacted and maintained so that it does not develop low spots where water pools. Pooled water is a breeding site for flies and a reservoir for pathogens.

Manure management is a continuous process. Remove manure from pens regularly, especially from the area around feed bunks and water troughs. Stockpile manure away from the animal pens and downwind of the feedlot. If you compost mortalities, locate the compost area at the far perimeter of the lot, away from all animal areas and water sources.

When you clean out a pen between groups of cattle, remove all manure and organic material, then wash the surface with water and disinfectant. This deep cleaning is the most effective way to break the cycle of disease between groups. The wash water and manure should be collected and handled according to your nutrient management plan.

Cleaning and Disinfection Protocols

Cleaning and disinfection are not the same thing. Cleaning removes dirt, manure, and organic material. Disinfection kills pathogens. You must clean before you disinfect, because organic material protects pathogens from disinfectants and reduces their effectiveness.

Develop a written cleaning and disinfection protocol for each area of the feedlot. The protocol should specify what to clean, how often to clean it, what products to use, and who is responsible. Post the protocol in the relevant areas so that workers can follow it consistently.

The processing facility requires the most rigorous cleaning because it handles animals from many different groups. After each group of cattle passes through, clean the chute, squeeze, and handling alleys. Remove all manure and organic material, wash the surfaces with water and detergent, rinse, and apply a disinfectant approved for livestock facilities. Allow the disinfectant to remain in contact with the surface for the time specified on the label, then rinse again if required.

Portable equipment such as sorting sticks, halters, and electric prods should be cleaned and disinfected between pens, or dedicated to a single pen. Syringes and needles should be changed between animals, and used needles should be disposed of in a sharps container. A single contaminated needle can transmit blood-borne diseases like anaplasmosis from one animal to many others.

Vehicles that enter the feedlot should be cleaned and disinfected before arrival. This is especially important for livestock trucks that have carried cattle from other operations. The truck bed, sides, and tailgate should be free of manure and organic material. The wheel wash or disinfectant pit at the entry point handles the tires and undercarriage.

Provide footbaths or boot wash stations at the entrance to the animal area and at the hospital pen. Workers and visitors should clean and disinfect their boots before entering and after leaving these areas. Disposable boots or designated on-site boots are an even better option for visitors who have been on other livestock operations.

Choose disinfectants that are effective against the pathogens you are most concerned about and that are safe for use around livestock. Common options include quaternary ammonium compounds, accelerated hydrogen peroxide, and chlorine-based products. Rotate between two or three disinfectants to reduce the risk of pathogens developing resistance. Follow the label directions for dilution, contact time, and safety precautions.

Visitor and Employee Protocols

People are one of the most common routes of disease introduction to a feedlot. A visitor who was on another cattle operation yesterday can carry pathogens on their boots, clothing, and vehicle. Employee movement between the feedlot and their own livestock can also introduce disease. A clear visitor and employee protocol is essential.

Designate one person as the biosecurity manager. This person is responsible for enforcing the biosecurity plan, maintaining records, training employees, and responding to biosecurity breaches. Having a single accountable person ensures that protocols are followed and that problems are addressed quickly.

All visitors should check in at the office before entering the animal area. The check-in process should include a logbook that records the visitor name, date, time in, time out, purpose of visit, and any recent contact with other livestock operations. The logbook serves as a record for disease tracing if an outbreak occurs.

Ask visitors if they have been on another livestock operation in the past 48 hours. If they have, require them to wear disposable boots and coveralls, or ask them to return after the 48-hour period has passed. This waiting period reduces the risk of transmitting diseases that have a short survival time outside the host.

Establish a clear policy for employee livestock contact. Employees who own cattle or who work on other livestock operations should shower and change into clean clothes and boots before starting work at the feedlot. Provide a changing area with lockers so that employees can leave their personal clothing and boots at the facility. This is a simple measure that prevents a common route of disease introduction.

Limit the number of visitors to the essential minimum. Each visitor is a potential disease carrier, so every unnecessary visit increases risk. When visitors are necessary, such as veterinarians, feed consultants, or extension agents, schedule them in groups and route them through the clean areas first. A veterinarian who has just come from a sick animal on another farm should clean and disinfect their boots and equipment before entering the feedlot.

Train all employees on the biosecurity plan at the time of hiring and at least once a year afterward. The training should cover the routes of disease transmission, the specific protocols for their job, and the importance of reporting sick animals immediately. Employees should know who the biosecurity manager is and how to report a biosecurity concern.

Receiving and Quarantine Procedures

The receiving area is the highest-risk part of the feedlot because it is where new animals enter. These animals have unknown health status and have been stressed by transport and commingling. A well-designed receiving and quarantine protocol reduces the risk that they bring disease into the resident herd.

All incoming cattle should go to the receiving area, not directly to the main pens. The receiving area should be physically separate from the main pens and should have its own processing facilities, feed bunks, and water troughs. This separation allows you to observe incoming animals for signs of disease before they mix with the resident herd.

Process incoming cattle as soon as possible after arrival. Processing includes visual inspection, vaccination, treatment for parasites, and tagging for identification. Sick animals should be identified during this process and moved directly to the hospital pen. Animals that appear healthy go to the quarantine pens.

The quarantine period should last at least 21 days, and 28 days is better. This period allows time for diseases to manifest and for the animals to recover from transport stress. During quarantine, observe the animals daily for signs of respiratory disease, diarrhea, lameness, and other health problems. Treat sick animals promptly and remove them from the quarantine group if their condition does not improve.

Keep quarantine groups together as a unit. Do not mix animals from different loads or different sources during the quarantine period. If you must add an animal to a quarantine group, restart the quarantine period for the entire group. This strict grouping ensures that you know the disease history of every animal in the feedlot.

The quarantine area should have its own drainage that does not flow toward the main pens. It should also have its own equipment, including chutes and handling tools. If equipment must be shared, clean and disinfect it thoroughly between the quarantine area and the main feedlot.

Some feedlots use a sentinel animal program. A sentinel is an animal that is known to be healthy and is placed with the incoming group. If the sentinel becomes sick, it is a sign that the incoming group is carrying disease. This program is more common in research settings, but it can be useful for high-value groups of cattle.

Feed and Water Biosecurity

Feed and water are essential inputs that can also be routes of disease transmission. Contaminated feed or water can sicken an entire pen of cattle quickly. Facility design should protect feed and water from contamination by animals, birds, rodents, and runoff.

Store feed in sealed bins or in a building that excludes birds and rodents. Birds can carry pathogens in their droppings, and rodents can carry diseases like leptospirosis. A sealed storage area prevents these animals from contaminating the feed. If you store feed in open piles, cover it with a tarp and check for signs of animal activity regularly.

Position feed bunks so that they are protected from runoff and animal manure. The feed bunk should be on the high side of the pen, with the pen sloping away from it. This arrangement keeps water and manure from flowing into the bunk. The area immediately around the bunk should be paved or compacted so that it can be cleaned easily.

Clean feed bunks regularly. Old feed that has been contaminated with saliva, nasal discharge, or manure can harbor pathogens and attract pests. Remove uneaten feed daily and clean the bunk surface with water and disinfectant between groups of cattle. Never feed spoiled or moldy feed, as it can cause digestive disease and reduce immunity.

Water troughs should be positioned away from the feed bunk and at the high end of the pen. They should be elevated or protected so that cattle cannot stand in them or defecate in them. Clean water troughs regularly to remove algae, biofilm, and organic material. A weekly cleaning with a brush and a mild disinfectant is a reasonable minimum, and more frequent cleaning may be needed in hot weather.

Test water quality regularly. Water that is contaminated with bacteria, nitrates, or other pollutants can cause disease and reduce performance. Your extension agent can help you arrange for water testing and interpret the results. If you use surface water such as a pond or stream, be aware that it may be contaminated by runoff from neighboring operations or wildlife.

Wildlife and Pest Control

Wildlife and pests are a constant biosecurity threat to feedlots. Deer can carry bovine tuberculosis and other diseases. Birds can spread pathogens through their droppings and by moving from pen to pen. Rodents can carry leptospirosis and contaminate feed. Insects such as flies and ticks can mechanically transmit diseases.

The perimeter fence is your first line of defense against wildlife. Keep it in good repair and check it regularly for gaps and damage. Consider adding a wildlife-proof gate at any point where the fence crosses a drainage or natural travel corridor. If deer are a persistent problem, talk to your extension agent or wildlife agency about additional exclusion measures.

Bird control is a constant challenge at feedlots because feed and water attract birds. Use bird netting over water troughs and feed storage areas. Remove standing water where birds can drink and bathe. Consider using bird deterrents such as noise makers, reflective tape, or trained dogs. Keep the feedlot clean so that spilled feed does not attract large flocks.

Rodent control requires an active program. Keep the feedlot free of debris and clutter where rodents can nest. Store feed in rodent-proof containers. Use bait stations and traps around the perimeter of buildings and feed storage areas. Check bait stations regularly and keep records of rodent activity.

Fly control is important because flies can transmit pathogens from manure to feed and water. The most effective fly control is manure management. Remove manure regularly and keep it dry so that it does not provide a breeding site for flies. Use fly traps, baits, and parasitic wasps as supplements to manure management. Talk to your extension agent about an integrated pest management program for your feedlot.

Monitoring and Recordkeeping

You cannot manage what you do not measure. A biosecurity program requires consistent monitoring and detailed recordkeeping. The records serve two purposes. They help you identify problems early and they provide a traceability trail if a disease outbreak occurs.

Assign one person to conduct regular biosecurity audits. This person should walk the feedlot at least monthly and check that fences are intact, drainage is working, equipment is clean, and protocols are being followed. The audit should include a checklist that covers all areas of the biosecurity plan. Any deficiencies should be corrected promptly and the correction documented.

Keep a daily health log for each pen. The log should record the number of animals, any animals showing signs of disease, treatments administered, and deaths. This log helps you detect disease trends early. A sudden increase in sick animals in one pen may indicate a disease outbreak that requires immediate action.

Maintain a treatment record for every animal that receives medication. The record should include the animal identification, the date, the drug used, the dose, and the route of administration. This record is required by law in most jurisdictions and is essential for ensuring that withdrawal times are met before animals go to market.

Keep a visitor log that records all entries to the feedlot. The log should include the visitor name, date, time in, time out, purpose of visit, and any recent contact with other livestock operations. In the event of a disease outbreak, this log allows you to trace potential sources of introduction.

Record all animal movements, including arrivals, transfers between pens, and departures. The record should include the source of the animals, the date of arrival, the quarantine period, and the final destination. This information is essential for traceability and for understanding the disease history of your operation.

Keep cleaning and disinfection records. The record should show when each area was cleaned, what products were used, and who performed the work. This record demonstrates that you are following your biosecurity plan and helps you identify areas that are not being cleaned adequately.

Store all records in a secure location for at least three years. Some records, such as treatment records, may need to be kept longer to comply with regulations. Talk to your veterinarian or extension agent about the record retention requirements for your area.

Common Biosecurity Mistakes

Many feedlot operators understand the importance of biosecurity but make avoidable mistakes in implementation. Recognizing these common errors can help you avoid them in your own operation.

The most common mistake is treating biosecurity as a one-time event rather than an ongoing process. A biosecurity plan that is written and then forgotten provides no protection. The plan must be reviewed, updated, and enforced continuously. Assign a biosecurity manager and hold them accountable for the program.

Another common mistake is focusing on animal health while ignoring people and equipment. A feedlot can have excellent animal quarantine procedures but still introduce disease through a visitor boots or a shared truck. Biosecurity must cover all routes of transmission, not just the most obvious ones.

Many feedlots fail to separate clean and dirty areas effectively. The hospital pen is placed in the center of the lot, or the processing facility is used for both incoming and outgoing animals. These design errors create constant opportunities for disease spread. If your facility has these problems, consider remodeling to create a true clean-to-dirty gradient.

Inadequate cleaning is another frequent problem. Some operators spray disinfectant on dirty surfaces and assume they have disinfected the area. Disinfectants do not work on organic material. You must clean thoroughly before you disinfect. This is a labor-intensive process, but it is essential for disease control.

Failure to quarantine incoming animals is a serious mistake. Some feedlots skip the quarantine period to save time or pen space. This practice exposes the resident herd to unknown diseases and can lead to a devastating outbreak. The quarantine period is not optional. It is a core biosecurity measure.

Many feedlots do not keep adequate records. Without records, you cannot trace the source of a disease outbreak or demonstrate that you followed your biosecurity plan. Recordkeeping takes time, but it is essential for both disease control and regulatory compliance.

Finally, many feedlots do not have a written disease outbreak plan. When an outbreak occurs, decisions are made in a panic and mistakes are made. A written plan that specifies who to call, what to do, and how to contain the disease can save valuable time and reduce losses.

When to Call a Veterinarian or Extension Agent

A biosecurity plan is not a substitute for professional advice. There are times when you need to call a veterinarian or extension agent. Knowing when to call can make the difference between a contained problem and a devastating outbreak.

Call a veterinarian immediately if you see signs of a reportable disease. These include unusual blisters or sores on the mouth, feet, or teats, which could indicate foot and mouth disease or vesicular stomatitis. Other reportable signs include neurological symptoms, unexplained death loss, and severe diarrhea with blood. Your veterinarian will know the reporting requirements for your area and can help you take appropriate action.

Call a veterinarian if you have an unusual increase in sick or dead animals. A mortality rate above 2 percent in a single pen, or a sudden increase in the number of animals requiring treatment, warrants professional investigation. Early intervention can prevent a small problem from becoming a large one.

Call a veterinarian before you introduce a new group of cattle if you have concerns about their health status. A veterinarian can help you develop a vaccination and treatment protocol for incoming animals and can advise you on the appropriate quarantine period for your situation.

Call an extension agent for help with facility design and biosecurity planning. Extension agents have access to research-based information and can help you evaluate your current facility and develop improvements. They can also help you with water testing, pest management, and other aspects of feedlot management.

Call an extension agent if you are planning a new feedlot or a major renovation. They can provide guidance on site selection, drainage, pen layout, and other design considerations. Getting professional input during the planning phase is much less expensive than correcting design errors after construction.

Call your veterinarian or extension agent if you have questions about disinfectant selection, cleaning protocols, or any other aspect of your biosecurity plan. They can help you choose products that are effective against the pathogens you are most concerned about and that are safe for your operation.

Do not hesitate to call for help. The cost of a professional consultation is small compared to the cost of a disease outbreak. Your veterinarian and extension agent are valuable resources for keeping your feedlot healthy and profitable.

Developing a Written Biosecurity Plan

A written biosecurity plan is the foundation of a successful biosecurity program. The plan documents your protocols, assigns responsibilities, and provides a reference for training and auditing. It also demonstrates to regulators, buyers, and neighbors that you take disease prevention seriously.

Start by conducting a biosecurity assessment of your current operation. Walk the feedlot and identify all the ways that disease could enter or spread. Consider animal movements, vehicle traffic, people, equipment, wildlife, and drainage. Write down your findings and prioritize the risks based on their likelihood and potential impact.

Develop protocols for each identified risk. The protocols should be specific and actionable. For example, instead of writing "clean the processing facility regularly," write "after each group of cattle, remove all manure, wash surfaces with detergent and water, rinse, apply disinfectant at the label rate, allow 10 minutes of contact time, and rinse again." Specific protocols are easier to follow and easier to audit.

Assign responsibilities for each protocol. Name the person who is responsible for implementing each part of the plan. The biosecurity manager should have overall responsibility, but every employee should have specific duties. Clear assignment of responsibility ensures that tasks are not overlooked.

Develop a training program for employees. All employees should receive biosecurity training at the time of hiring and at least annually afterward. The training should cover the routes of disease transmission, the specific protocols they are responsible for, and the importance of reporting sick animals and biosecurity concerns.

Establish a system for monitoring and auditing the plan. The biosecurity manager should conduct regular audits and document the results. The audit should identify any gaps in implementation and recommend corrective actions. The plan should be reviewed and updated at least annually, or whenever there is a significant change in the operation.

Develop a disease outbreak plan as part of your biosecurity plan. The outbreak plan should specify who to call, how to isolate affected animals, how to clean and disinfect contaminated areas, and how to communicate with employees, neighbors, and regulators. Having a plan in place before an outbreak occurs can save valuable time and reduce losses.

Design Considerations for New Construction

If you are building a new feedlot, you have the opportunity to incorporate biosecurity into the design from the start. The following considerations are especially important for new construction.

Work with a qualified engineer or extension agent who has experience with feedlot design. They can help you with site selection, drainage, pen layout, and other technical aspects. The cost of professional design services is small compared to the cost of correcting design errors later.

Design the facility on paper or using computer software before construction begins. Create a detailed site plan that shows the location of all buildings, pens, roads, drainage, and utilities. Review the plan for biosecurity issues before you pour concrete or erect fences.

Consider future expansion in your design. It is easier to design a facility that can be expanded while maintaining biosecurity than to retrofit an existing facility. Plan the clean-to-dirty gradient so that expansion does not require animals to cross through clean areas.

Choose materials that are easy to clean and that resist corrosion and damage. Smooth concrete surfaces are easier to clean than rough or porous surfaces. Galvanized or stainless steel is preferable to untreated steel for equipment that will be exposed to moisture and disinfectants.

Install adequate water supply and drainage for cleaning operations. You need enough water to wash down the processing facility, hospital pen, and other areas. The wash water must drain to an appropriate collection system, not into the surrounding environment.

Plan the road system so that vehicles can move through the feedlot without crossing contaminated areas. The main road should connect the office, feed storage, and loading area. A separate road or lane should serve the animal pens and hospital area. The two road systems should not cross.

Consider the location of utilities such as electricity, water, and communications. These are needed in the office, processing facility, and hospital area. Install them before construction so that you do not have to dig up completed areas later.

Cost Considerations and Prioritization

Biosecurity improvements cost money, and feedlot operators must prioritize their investments. The following guidance can help you decide where to spend your biosecurity dollars.

Focus first on the measures that address the highest risks. Incoming animals are the highest risk, so the receiving and quarantine area is the most important investment. The hospital pen is the second priority because it is where sick animals are concentrated. Perimeter fencing and a controlled entry point are also high priorities because they control all movement into the facility.

Low-cost measures can provide significant benefits. A visitor logbook, a boot wash station, and a written biosecurity plan cost very little but can prevent disease introduction. Training employees on biosecurity protocols is another low-cost, high-value investment.

Moderate-cost measures include wheel washes, dedicated equipment for the hospital area, and improvements to drainage. These investments are worthwhile if they address a specific risk in your operation.

High-cost measures include new construction, major remodeling, and automated systems. These investments should be planned carefully and implemented over time. Prioritize the measures that provide the greatest risk reduction for the investment.

Remember that the cost of a disease outbreak is usually much higher than the cost of prevention. A single severe outbreak can result in death loss, treatment costs, reduced performance, and lost market opportunities. Investing in biosecurity is a form of insurance that protects your entire operation.

Regulatory Considerations

Feedlot biosecurity is not just a matter of good management. There are regulatory requirements that you must meet, and your biosecurity plan should be consistent with these requirements.

The USDA Animal and Plant Health Inspection Service (APHIS) oversees cattle health at the national level. APHIS has programs for disease surveillance, response, and traceability. You should be aware of APHIS requirements for animal identification, disease reporting, and interstate movement of cattle.

The World Organisation for Animal Health (WOAH) sets international standards for animal health in the Terrestrial Animal Health Code. These standards cover disease reporting, international trade, and biosecurity. If you export cattle or beef products, you need to be aware of WOAH standards and how they apply to your operation.

Your state or provincial department of agriculture may have additional requirements. These can include feedlot registration, manure management plans, and disease reporting requirements. Contact your extension agent or state veterinarian to learn about the requirements in your area.

The Food and Drug Administration (FDA) regulates the use of veterinary drugs in food animals. You must follow label directions, observe withdrawal times, and keep treatment records. Your veterinarian can help you comply with FDA requirements.

Environmental regulations may also apply to your feedlot. These can include requirements for runoff control, manure storage, and water quality. Your extension agent can help you understand and comply with these requirements.

Building a Biosecurity Culture

Biosecurity is not just a set of protocols, it is a culture. A biosecurity culture is one where every employee understands the importance of disease prevention and takes personal responsibility for following the plan. Building this culture takes time and effort, but it is essential for long-term success.

Lead by example. The feedlot owner and manager must follow the biosecurity protocols themselves. If the manager walks through the animal area without changing boots, employees will assume the protocols do not matter. Consistent leadership is the foundation of a biosecurity culture.

Communicate the why behind the protocols. Employees are more likely to follow a protocol if they understand its purpose. Explain how diseases spread and how each protocol prevents transmission. Use examples from real disease outbreaks to illustrate the consequences of biosecurity failures.

Recognize and reward good biosecurity practices. Praise employees who follow the protocols consistently and who report biosecurity concerns. Consider incorporating biosecurity compliance into performance reviews and incentive programs.

Make biosecurity part of the daily routine. Include biosecurity checks in the daily walk-through. Start meetings with a brief review of any biosecurity issues. The more biosecurity is discussed and practiced, the more it becomes a habit.

Be willing to enforce the protocols. If an employee consistently violates biosecurity rules, address the problem directly. The consequences of a disease outbreak are far worse than the discomfort of disciplining an employee. A biosecurity culture requires accountability.

Conclusion

Feedlot biosecurity is a continuous process that starts with facility design and extends through every daily operation. The decisions you make about site layout, pen placement, drainage, and entry points create the foundation for disease prevention. The protocols you implement for receiving, quarantine, cleaning, and visitor management build on that foundation. The records you keep and the audits you conduct ensure that the system works over time.

A well-designed feedlot with a strong biosecurity program reduces the risk of disease introduction and spread. It protects your animals, your employees, and your investment. It also demonstrates to buyers, regulators, and neighbors that you are a responsible livestock producer. The investment in biosecurity is one of the most cost-effective decisions you can make for your feedlot.

Start by assessing your current operation and identifying the highest risks. Develop a written biosecurity plan that addresses those risks with specific protocols. Assign a biosecurity manager and train your employees. Implement the highest-priority improvements first, and continue to improve over time. Your veterinarian and extension agent are valuable partners in this process. Use them.

Frequently Asked Questions

How long should incoming cattle be quarantined in a feedlot?

A quarantine period of at least 21 days is the minimum recommended for feedlot cattle, and 28 days is better. This period allows time for diseases to manifest and for animals to recover from transport stress. During quarantine, observe animals daily for signs of respiratory disease, diarrhea, lameness, and other health problems. Keep quarantine groups together as a unit and do not mix animals from different sources during the quarantine period.

What is the best location for a hospital pen in a feedlot?

The hospital pen should be at the perimeter of the feedlot, as far from the main pens as practical. It should be downwind of the healthy animals and have its own drainage that flows away from the rest of the lot. The hospital pen should have solid walls or high solid panels, good bedding, shelter from wind and weather, and its own dedicated equipment. Never share equipment between the hospital area and the main pens without cleaning and disinfecting it first.

How often should feedlot pens be cleaned and disinfected?

Pens should be cleaned and disinfected between groups of cattle, using an all-in, all-out management system. When a group leaves, remove all manure and organic material, wash the surface with water and disinfectant, and allow the pen to dry before the next group arrives. The processing facility should be cleaned and disinfected after each group of cattle passes through. Feed bunks and water troughs should be cleaned regularly, with water troughs cleaned at least weekly.

What disinfectants are best for feedlot use?

Effective disinfectants for feedlot use include quaternary ammonium compounds, accelerated hydrogen peroxide, and chlorine-based products. Choose a disinfectant that is effective against the pathogens you are most concerned about and that is safe for use around livestock. Rotate between two or three disinfectants to reduce the risk of pathogens developing resistance. Always clean surfaces thoroughly before applying disinfectant, because organic material protects pathogens and reduces disinfectant effectiveness.

How can I prevent disease spread through shared equipment?

The most effective way to prevent disease spread through shared equipment is to dedicate equipment to specific areas, especially the hospital area and quarantine area. If equipment must be shared, clean and disinfect it thoroughly between uses. This includes chutes, sorting panels, sorting sticks, halters, and electric prods. Syringes and needles should be changed between animals, and used needles should be disposed of in a sharps container.

What should I do if I suspect a reportable disease in my feedlot?

Call your veterinarian immediately. Reportable diseases include foot and mouth disease, vesicular stomatitis, bovine spongiform encephalopathy, and others. Signs to watch for include unusual blisters or sores on the mouth, feet, or teats, neurological symptoms, unexplained death loss, and severe diarrhea with blood. Your veterinarian will know the reporting requirements for your area and can help you take appropriate action. Do not move animals or equipment until you have consulted with your veterinarian.

How do I manage visitors to maintain biosecurity?

All visitors should check in at the office before entering the animal area. Record their name, date, time in, time out, purpose of visit, and any recent contact with other livestock operations. Ask if they have been on another livestock operation in the past 48 hours, and if so, require them to wear disposable boots and coveralls or ask them to return later. Limit visitors to the essential minimum and route them through clean areas first.

What records should I keep for my biosecurity program?

Keep a daily health log for each pen, a treatment record for every animal that receives medication, a visitor log, a record of all animal movements, and cleaning and disinfection records. The visitor log should include the visitor name, date, time in, time out, purpose of visit, and recent livestock contact. Store all records in a secure location for at least three years. Some records, such as treatment records, may need to be kept longer to comply with regulations.

Related Farming Guides

• Biosecurity Facility Design: Entry and Traffic Control

This section will be populated with links to related farming guides on feedlot management, cattle health, facility design, and disease prevention. Check back for updates.

Related Clinical & Scientific Guides

• Cattle Head Gate Selection and Adjustment
• Beef Cattle Handling Facility Flow
• Beef Cattle Maternity Pen Design: Comfort and Monitoring

References

• Beef Cattle Research Council: https://www.beefresearch.ca/
• USDA APHIS Cattle Health: https://www.aphis.usda.gov/livestock-poultry-disease/cattle
• WOAH Terrestrial Animal Health Code: https://www.woah.org/en/what-we-do/standards/codes-and-manuals/terrestrial-code-online-access/
• FAO Animal Production and Health: https://www.fao.org/animal-production/en/
• WOAH (World Organisation for Animal Health): https://www.woah.org/en/home/

This article is educational and is not a substitute for veterinary diagnosis, treatment, public-health guidance, or regulatory reporting.