# Farrowing and Nursery Barn Biosecurity Entry Protocols ## Key Takeaways - Farrowing and nursery barns require stringent biosecurity due to the high immunological vulnerability of newborn and weaned piglets, respectively, making them susceptible to pathogens like PRRS, PED, PCV2, *Streptococcus suis*, and *Haemophilus parasuis*. - A critical biosecurity measure is establishing a distinct "clean-dirty line" at barn entrances, necessitating a complete change of footwear and outer garments before entering the pig areas, with shower-in protocols being the gold standard for maximum pathogen reduction. - Dedicated equipment (e.g., processing tools, carts, boots) for each barn is essential to prevent cross-contamination; sharing equipment between farrowing, nursery, and grow-finish sites significantly increases disease transmission risk. - Age-segregated flow and strict all-in, all-out production are foundational for nursery disease control, emphasizing the importance of thorough cleaning, disinfection, and drying of rooms between groups to reduce pathogen load. - Comprehensive personnel training, consistent monitoring of compliance through entry logs, and leading by example are paramount, as the effectiveness of any biosecurity protocol is directly dependent on the adherence of all individuals, including owners and veterinarians. - Downtime, the period a cleaned room sits empty and dry before new pigs arrive, is a critical tool for pathogen inactivation, with longer durations significantly reducing residual microbial load and infectious potential. --- Biosecurity is the single most important management system you can control on a swine operation, and the farrowing and nursery barns are where your attention matters most. These barns house the most immunologically vulnerable animals on your farm: newborn piglets with no passive immunity of their own and weaned pigs whose maternal antibody protection is fading. This guide covers the specific entry protocols that protect these animals, the reasoning behind each step, and how to build a system your crew will actually follow. It is written for farm owners, herd managers, and employees who work in farrowing and nursery barns daily, as well as for veterinarians and advisers who support them. ## At a Glance - **Establish a clean-dirty line** at the entrance to every farrowing and nursery barn. All entry procedures happen on the dirty side before you cross into the clean side. - **Shower-in is the gold standard** for farrowing and nursery barns. If a full shower is not possible, use a three-step boot and coverall change with a footbath between steps. - **Dedicate equipment to each barn.** Never share piglet processing tools, carts, or boots between farrowing, nursery, and grow-finish sites. - **Age-segregated flow matters more than any disinfectant.** Do not move pigs backward through the barn system. - **All-in, all-out production** is the foundation of nursery disease control. Empty, wash, disinfect, and dry every room before new pigs arrive. - **Downtime is a tool.** The longer a cleaned room sits empty and dry before new pigs enter, the fewer pathogens remain. - **Train every person who enters the barn**, including the owner, the veterinarian, and the delivery driver. The protocol is only as good as the least consistent person who follows it. - **Write down every entry.** A simple logbook or app record of who entered, when, and where they came from is your most valuable disease investigation tool. ## Why Farrowing and Nursery Barns Need Special Entry Protocols The farrowing barn and the nursery barn are not just two more buildings on the farm. They are the two areas where a disease introduction causes the most damage and where the consequences of a biosecurity failure last the longest. Understanding why these barns are different from grow-finish sites helps you build protocols that make sense and that your crew will respect. ### The Immune Vulnerability of Sows and Newborn Piglets A newborn piglet is born with essentially no circulating antibodies. It absorbs immunoglobulins from colostrum in the first 24 hours of life, but that protection is only as good as the sow's own immunity and the quality of colostrum intake. [Porcine reproductive and respiratory syndrome](/knowledge/viruses/general/porcine-reproductive-and-respiratory-syndrome-genomic-surveillance-and-vaccine-strategies-using-bioinformatics) (PRRS), porcine epidemic diarrhea (PED), transmissible gastroenteritis (TGE), and other pathogens can infect a piglet within hours of birth. Once a disease enters a farrowing room, it spreads rapidly because piglets are in close contact with their dam and with littermates in adjacent crates. Sows in the farrowing barn are also under stress. The physical demands of farrowing, the hormonal shifts around lactation, and the metabolic cost of milk production all suppress immune function. A sow that would fight off a mild infection in gestation can break with clinical disease in the farrowing barn. That disease then passes to her piglets through milk, feces, or respiratory droplets. ### The Nursery Barn as a Disease Amplifier The nursery barn takes pigs at weaning, typically between 18 and 24 days of age, at a moment when maternal antibody levels are falling. The stress of weaning itself, the change in diet, the mixing of litters, and the new environment all combine to make nursery pigs highly susceptible to disease. Porcine circovirus type 2 (PCV2), Streptococcus suis, [Haemophilus parasuis](/knowledge/bacteria/livestock-bacteria/haemophilus-parasuis-glaessers-disease-pigs), and [Mycoplasma hyopneumoniae](/knowledge/bacteria/livestock-bacteria/mycoplasma-hyopneumoniae-enzootic-pneumonia-pigs) all cause their most severe clinical disease in the nursery and early grow-finish period. The nursery barn is also where subclinical infections become clinical. A pathogen that enters a nursery room can amplify in the population and then shed into the environment, where it persists for weeks. Even after clinical signs resolve, the room remains contaminated. Without strict entry protocols, you can reintroduce the same pathogen to the next group of pigs. ### The Financial Impact of a Breakdown The cost of a biosecurity breakdown in farrowing or nursery barns is not limited to mortality. A PRRS outbreak in a farrowing barn can cause abortion storms, increased stillbirths, and weak piglets for months. A PED outbreak can cause near 100 percent mortality in piglets under one week of age. A nursery disease outbreak can reduce average daily gain, increase feed conversion, and create a cohort of poor-doing pigs that never reach full market potential. The indirect costs are often larger than the direct losses. You lose genetic progress when you repopulate. You lose market contracts when pig flow is disrupted. You lose employee morale when you spend weeks scrubbing and disinfecting rooms. And you lose the trust of your packer and your neighbors. Every one of these outcomes is preventable with disciplined entry protocols. ## The Core Principles of Barn Entry Biosecurity Before you write a specific entry protocol, you need to understand the principles that make any protocol work. These principles apply whether you run a 200-sow farrow-to-finish operation or a 5,000-sow commercial system. ### The Dirty-Clean Line Every barn entry protocol is built on a single concept: there is a dirty side and a clean side, and there is a defined line between them. The dirty side is everything outside the barn, including the parking lot, the alleyway, and the entry room floor. The clean side is the barn interior where pigs live. The line is the physical barrier where you change boots, coveralls, and any other equipment that crosses into the pig space. The line should be unmistakable. Paint a line on the floor. Install a bench that separates the two sides. Post a sign that says "Stop. All entry procedures begin here." The line must be respected by everyone, every time, including you. ### The Chain of Transmission Diseases enter your barn through a chain of events. A pathogen travels from a source, through a vehicle, to a susceptible pig. Your entry protocol breaks that chain at the vehicle level. The most common vehicles are: - Boots and clothing contaminated with feces from another farm or from your own grow-finish barns - Hands and forearms that have touched pigs or manure - Equipment such as piglet processing trays, needles, castration tools, and carts - Feed, water, and bedding - Airborne particles, though this is less common over long distances - Rodents, birds, flies, and other feral animals - Semen, embryos, and live pigs brought into the herd Your entry protocol must address every vehicle that applies to your operation. If you only change boots but share a processing cart between the nursery and the farrowing barn, you have a hole in the chain. ### The Concept of Pathogen Load Biosecurity is not about achieving a zero-pathogen environment. That is impossible. It is about reducing the pathogen load below the infectious dose for the animals in the barn. A healthy, well-nourished, unstressed pig can tolerate a low level of exposure. A stressed, newly weaned pig cannot. This concept explains why some farms can get away with lax protocols for years and then suffer a devastating outbreak. The pathogen load was below the infectious threshold until a stress event, a weather change, or a new pathogen introduction pushed it over. Disciplined entry protocols keep the baseline load low so that the margin of safety is wide. ## Designing Your Farrowing Barn Entry Protocol The farrowing barn is the most sensitive area on your farm. The sows are immunocompromised, the piglets are immunologically naive, and the consequences of a disease introduction are catastrophic. Your entry protocol must reflect this reality. ### Step 1: Park and Stage Outside the Barn The protocol begins before you reach the barn door. Park your vehicle in a designated area away from the barn entrance. If you have a farm pickup that moves between sites, it should never enter the farrowing barn lot. Stage any equipment you need inside the barn in the entry room before you change. This prevents trips back and forth across the clean-dirty line. If you have a shower facility, the parking area should be adjacent to the shower entry. The shower is the clean-dirty line. Everything that happens before the shower is dirty. Everything after the shower is clean. ### Step 2: Remove Dirty Clothing and Footwear In the entry room, remove your boots and outer clothing before you cross the line. This includes your farm jacket, your hat, and any outer layers that may have contacted manure, mud, or other pigs. Place them in a container designated for dirty clothing. If you have a bench, sit on the dirty side while you remove your boots, then swing your legs over to the clean side to put on clean boots. This bench technique is simple and effective. It prevents you from standing in dirty footwear on the clean side while you change. Many farms fail at this exact point because people walk across the room in their farm boots to retrieve a clean coverall. ### Step 3: Shower or Change The gold standard for farrowing barn entry is a full shower-in. You remove all clothing, shower with soap and water, and then put on barn-specific clothing and boots that never leave the barn. This is the standard for commercial sow farms and for any farm where the farrowing barn has had a recent disease challenge. If you do not have a shower, the minimum acceptable protocol is a complete change of coveralls and boots. You remove your outer clothing, put on a clean barn coverall, and put on barn boots that are dedicated to the farrowing barn. These boots should never be worn anywhere else on the farm, including the nursery or grow-finish barns. ### Step 4: Cross the Line and Enter the Barn Once you are changed, cross the line and enter the barn. Do not return to the dirty side unless you repeat the entire procedure. If you forget something, you either do without it or you go back out and restart the process. Inside the barn, you should have access to everything you need: gloves, disinfectant spray, piglet processing equipment, and any medications. The barn should be stocked so that you never have to exit and re-enter mid-task. ### Step 5: Exit Protocol When you leave the farrowing barn, reverse the procedure. Remove your barn boots and coveralls on the clean side of the line. Place them in a designated bin. If you shower-out, do so. Put on your dirty clothing and boots on the dirty side and leave. The exit protocol is important for two reasons. First, it prevents you from carrying pathogens out of the barn to other sites. Second, it keeps the entry room organized so that the next person can follow the same procedure without confusion. ## Designing Your Nursery Barn Entry Protocol The nursery barn protocol is similar to the farrowing barn protocol but with some important differences. Nursery pigs are weaned and mobile, which means they can contact more surfaces. The nursery barn also tends to have more traffic because pigs are being moved in and out on a regular schedule. ### The Nursery as a Separate Biosecurity Unit If you operate a farrow-to-finish farm, the nursery is a separate biosecurity unit from the farrowing barn. This means it has its own entry protocol, its own boots and coveralls, and its own equipment. A person who works in the farrowing barn in the morning and the nursery in the afternoon must change completely between the two. The reasoning is simple. The farrowing barn is the cleanest area on your farm. The nursery is the dirtiest area because it receives pigs from multiple sources and those pigs are shedding pathogens at a higher rate. If you wear the same boots in both barns, you transfer nursery pathogens to the farrowing barn, where they cause the most damage. ### Step 1: Verify the Health Status of Incoming Pigs Before you enter the nursery, check the health status of the pigs you are about to work with. If you are receiving pigs from a sow farm, confirm that the source herd is negative for the diseases you monitor. If you are moving pigs from your own farrowing barn, confirm that the group is healthy and that you are not moving sick pigs. This step is part of entry biosecurity because it prevents you from introducing disease to the nursery through the pigs themselves. A pig that looks healthy at weaning can be shedding PRRS or PCV2. If you know the source herd status, you can adjust your monitoring and vaccination protocols accordingly. ### Step 2: Follow the Same Entry Sequence as the Farrowing Barn The entry sequence for the nursery is the same as the farrowing barn: park outside, remove dirty clothing, change or shower, cross the line, and enter the barn. The difference is that the nursery protocol may be slightly less strict if you have a shower facility and the farrowing barn protocol requires a shower. However, the minimum standard is the same: a complete boot and coverall change with a footbath between the dirty and clean sides. ### Step 3: Use a Footbath Correctly A footbath is a plastic pan or trough filled with disinfectant solution that you step through as you cross the line. It is not a substitute for a boot change, but it adds an extra layer of protection if you must wear boots that move between areas. The footbath only works if it is maintained. The disinfectant must be mixed at the correct concentration, must be changed daily, and must be protected from organic matter. A footbath full of muddy water and diluted disinfectant is worse than no footbath because it gives a false sense of security. Scrub the boots with a brush in the footbath for at least 30 seconds on each boot, then step through to the clean side. ### Step 4: Apply the Same Exit Protocol The exit protocol for the nursery is the same as the farrowing barn. Remove barn-specific clothing and boots, place them in the designated bin, and do not wear them to any other area. If you move from the nursery to the farrowing barn, you must repeat the full entry protocol at the farrowing barn, including a fresh shower or clothing change. ## Equipment and Supply Management Diseases travel on equipment as easily as they travel on boots and clothing. The farrowing and nursery barns need dedicated equipment that never crosses to other barns or to the outside. ### Dedicated Tools for Each Barn Piglet processing tools are a common source of disease spread. The same side cutter, needle, and castration blade used in the farrowing barn can carry PRRS or Streptococcus suis to the nursery if it is shared. Assign a complete set of processing tools to each barn and label them clearly. Store them in a closed container inside the barn so they never leave the clean side. The same rule applies to larger equipment. Carts, wheelbarrows, and feed scoops should be dedicated to a single barn. If you must move a cart between barns, wash it thoroughly, disinfect it, and let it dry before it enters the next barn. In practice, it is cheaper to buy a second cart than to risk a disease outbreak. ### Needles and Syringes Needles and syringes are a direct route for blood-borne pathogens. PRRS, porcine circovirus, and other viruses can be transmitted on a single needle used on multiple pigs. Use a new needle for each litter in the farrowing barn and for each pen or group in the nursery. Dispose of used needles in a puncture-proof container that is emptied and replaced on a regular schedule. If you use a multi-dose syringe for vaccinations, clean it thoroughly between uses and use a disinfectant solution that is compatible with the vaccine. Do not leave a syringe sitting in a contaminated tray between litters. ### Footwear Management Boots are the most common vehicle for disease transmission on a swine farm. The solution is simple: have a dedicated pair of boots for each barn and never wear them outside that barn. Store the boots on the clean side of the entry line. When you leave the barn, leave the boots behind. If you cannot have dedicated boots for each barn, use disposable plastic boot covers over your farm boots. These are not as effective as dedicated boots because they can tear and because the farm boots underneath can carry contamination. They are an acceptable backup but not a substitute for a proper boot change. ## Personnel Training and Compliance A written biosecurity protocol is useless if people do not follow it. The hardest part of biosecurity is not designing the system, it is getting every person to comply every time. This requires training, monitoring, and a culture that values biosecurity. ### Initial Training for All Employees Every person who enters your farrowing or nursery barns must receive formal training on the entry protocol before they are allowed inside. This includes new employees, temporary workers, veterinarians, and delivery drivers. The training should cover: - The location of the clean-dirty line - The steps for entry and exit - The location and use of boots, coveralls, and footbaths - The equipment that is dedicated to each barn - The consequences of a biosecurity breakdown Training should be hands-on. Have the person practice the entry sequence while you watch. Correct any mistakes immediately. Do not assume that someone who has worked on another farm knows your protocol. Every farm is different. ### Regular Retraining and Refresher Sessions Biosecurity protocols drift over time. People take shortcuts, equipment moves, and the entry room becomes cluttered. Schedule a formal retraining session every six months for all employees. Walk through the entry sequence together, inspect the entry room, and remind everyone why the protocol exists. Use real examples from your own farm or from the industry to make the training concrete. If you had a disease scare in the past, talk about what happened and how the protocol prevented a worse outcome. ### Monitoring Compliance You cannot manage what you do not measure. Keep a simple entry log at each barn. Every person who enters signs in with their name, the date and time, the purpose of their visit, and the last farm or barn they visited. Review the log weekly. If you see patterns of noncompliance, address them immediately. Some farms use cameras at the barn entrance to monitor compliance. This is a sensitive topic but can be effective, especially on larger operations where the owner cannot be present at every entry. If you use cameras, tell your employees they are for safety and biosecurity monitoring, and use the footage to coach rather than to punish. ### Leading by Example The owner and manager set the tone for biosecurity. If you skip the shower because you are in a hurry, your employees will skip it too. If you wear your farm boots into the farrowing barn to check on a sow, your employees will do the same. You must follow the protocol every time, without exception, and visibly so. If you have visitors who resist the protocol, be firm. A veterinarian who is in a hurry to see a sick sow must still shower and change. A delivery driver who wants to drop feed at the barn door must be redirected to the designated drop-off point. The protocol applies to everyone. ## Common Mistakes and How to Avoid Them Even well-designed biosecurity programs fail because of small, repeated mistakes. Here are the most common ones and how to avoid them. ### Mistake 1: Treating the Nursery and Farrowing Barn as One Unit Many farrow-to-finish farms treat all their barns as a single unit. People wear the same boots in the farrowing barn, the nursery, and the grow-finish barn. Equipment is shared. This is the fastest way to spread disease from older pigs to younger pigs. The fix is to establish clear biosecurity units. The farrowing barn is one unit. The nursery is another. Grow-finish is a third. Each unit has its own boots, coveralls, and equipment. Moving between units requires a full change. ### Mistake 2: Using Footbaths as a Substitute for Boot Changes A footbath is a supplemental measure, not a primary one. Stepping through a footbath in boots that have been in another barn does not adequately reduce pathogen load. The boots are still contaminated, and the footbath itself becomes contaminated within a few uses. The fix is to use a footbath only as an extra layer on top of a complete boot change. If you cannot change boots, use disposable boot covers. Do not rely on a footbath alone. ### Mistake 3: Neglecting the Entry Room The entry room is the most important room on your farm for biosecurity, yet it is often the most neglected. It becomes cluttered with old coveralls, empty disinfectant jugs, and dirty boots. The clean-dirty line becomes blurred. The fix is to keep the entry room clean and organized. Designate a shelf or bin for clean coveralls and a separate bin for dirty ones. Keep the disinfectant and footbath supplies stocked. Sweep the floor daily. Post a sign that shows the entry sequence step by step. ### Mistake 4: Sharing Equipment Between Barns It is tempting to move a processing cart from the farrowing barn to the nursery when the nursery is short on equipment. This is a direct route for disease transmission. The fix is to buy dedicated equipment for each barn and label it clearly. If you must share equipment, wash it thoroughly, disinfect it, and let it dry for at least 24 hours before it enters the next barn. In practice, dedicated equipment is cheaper and safer. ### Mistake 5: Ignoring the Exit Protocol Most people focus on entry and forget about exit. But the exit protocol is just as important. If you wear barn boots to the office or to your vehicle, you carry pathogens out with you. If you then visit another farm, you carry those pathogens to that farm. The fix is to include the exit protocol in your written procedures and in your training. Remove barn boots and coveralls before you leave the barn. Wash your hands. Do not wear barn clothing to any other location. ### Mistake 6: Failing to Monitor and Adjust Biosecurity is not a one-time project. It is a continuous process. If you do not review your protocols regularly, they will drift. If you do not track disease trends, you will not know when a protocol is failing. The fix is to schedule a biosecurity review at least twice a year. Walk through the entire farm, inspect the entry rooms, review the entry logs, and talk to your employees about what is working and what is not. Adjust the protocol based on what you learn. ## Decision Thresholds for Upgrading Biosecurity Sometimes the standard entry protocol is not enough. You need to know when to upgrade your biosecurity measures in response to a disease threat. ### When to Move from Boot Change to Shower-In If your farm does not have a shower facility and you are experiencing a disease outbreak, or if a neighboring farm within three miles has a confirmed case of PRRS or PED, consider installing a shower facility or implementing a temporary shower-in protocol at a nearby facility. This is a significant investment, but it is cheaper than a disease outbreak. ### When to Implement a Lockdown A lockdown is a temporary halt to all nonessential visits to your farm. It is appropriate when: - A neighboring farm within three miles has a confirmed case of a high-consequence disease such as PED or PRRS - Your own farm has a suspected disease introduction - You are moving pigs or semen into the herd from a new source During a lockdown, only essential personnel enter the barns. All visitors are postponed. Feed deliveries are dropped at a designated point away from the barns. Semen deliveries are handled with extra care. ### When to Depopulate and Repopulate In the most severe cases, a disease outbreak may require depopulation and repopulation. This is a drastic step and should only be taken with the guidance of your veterinarian and, in some cases, your regulatory veterinarian. It is appropriate when: - The disease is causing high mortality that is not responding to treatment - The disease is endemic and cannot be eliminated with herd closure - The cost of ongoing losses exceeds the cost of depopulation and repopulation Depopulation and repopulation is a multi-month process that involves emptying the barns, cleaning and disinfecting, and bringing in new breeding stock. It is a last resort, but it is sometimes the most cost-effective option. ## Monitoring and Recordkeeping Biosecurity is not just about preventing disease entry. It is also about detecting disease early and tracking the effectiveness of your protocols. This requires a monitoring and recordkeeping system. ### Daily Health Observations Every person who enters the farrowing or nursery barn should be trained to observe pig health and report anything unusual. Look for: - Increased mortality or morbidity - Coughing, sneezing, or labored breathing - Diarrhea, especially in piglets - Abortions or stillbirths in sows - Reduced feed intake or water intake - Lethargy or reluctance to move Any of these signs should be reported to the herd manager or veterinarian immediately. Early detection is the difference between a contained outbreak and a farm-wide disaster. ### Weekly and Monthly Records Keep a weekly summary of health observations, mortality, and treatments. Track trends over time. If mortality in the nursery increases from 2 percent to 4 percent over three weeks, that is a signal to investigate. Monthly records should include: - Number of pigs weaned per sow - Pre-weaning mortality rate - Nursery mortality rate - Average daily gain in the nursery - Feed conversion in the nursery These records help you detect subclinical disease that reduces performance without causing obvious clinical signs. ### Entry Logs As discussed earlier, maintain an entry log at each barn. Record the name of each person, the date and time, the purpose of the visit, and the last farm or barn visited. Review the log regularly and use it to trace disease introductions if an outbreak occurs. ### Diagnostic Testing Work with your veterinarian to establish a routine diagnostic testing program. This may include: - Blood sampling of sows and nursery pigs for PRRS and other pathogens - Oral fluid sampling in the nursery - Processing fluid sampling in the farrowing barn - Necropsy of any pigs that die unexpectedly Diagnostic testing is the only way to know what diseases are present on your farm and whether your biosecurity protocols are working. ## When to Call a Veterinarian or Extension Agent There are times when you need professional help beyond your own expertise. Know when to call. ### Call Your Veterinarian Immediately If - You see a sudden increase in mortality in the farrowing or nursery barn - You see clinical signs consistent with a notifiable disease such as [African swine fever](/knowledge/bioinformatics/african-swine-fever-computational-models-for-early-detection-and-spread-prediction-in-wild-boar-populations), classical swine fever, or foot-and-mouth disease - You suspect PED or TGE based on watery diarrhea in piglets - Sows are aborting at an unusual rate - You have a disease diagnosis and need guidance on treatment and control Your veterinarian is your first line of defense. They can help you confirm a diagnosis, implement treatment, and adjust your biosecurity protocols. ### Call Your Extension Agent or State Animal Health Official If - You need help developing a biosecurity plan from scratch - You have questions about regulatory requirements for disease reporting - You are considering a depopulation and repopulation and need guidance - You want to participate in a disease monitoring or certification program - You need help interpreting diagnostic test results Your extension agent can connect you with resources, research, and other producers who have faced similar challenges. Your state animal health official can advise you on regulatory requirements and disease reporting. ### Report Notifiable Diseases Immediately Some diseases are reportable to state or federal authorities. If you suspect African swine fever, classical swine fever, foot-and-mouth disease, or any other notifiable disease, contact your veterinarian and your state animal health official immediately. Do not wait for a confirmed diagnosis. Early reporting is essential for disease control and for protecting the wider swine industry. ## Frequently Asked Questions ### How often should I change the footbath disinfectant? Change the footbath solution daily, or more often if it becomes visibly dirty or contaminated with organic matter. A footbath that contains mud, feces, or bedding is not disinfecting anything. The disinfectant is inactivated by organic material, so the solution must be clean to work. Use a brush to scrub boots in the footbath for at least 30 seconds per boot, and replace the solution whenever it looks cloudy or dirty. ### Can I use the same boots in the farrowing barn and the nursery if I disinfect them between barns? No. Disinfecting boots between barns is not reliable enough to prevent disease transmission. The safest approach is to have dedicated boots for each barn that never leave that barn. If you must share boots, use disposable boot covers over the shared boots, and change the covers between barns. Even then, the risk is higher than with dedicated boots. ### What is the minimum biosecurity protocol for a small farrow-to-finish farm with no shower? The minimum acceptable protocol is a complete change of coveralls and boots at each barn entrance. You remove your outdoor clothing and boots, put on barn-specific coveralls and boots, and cross a clean-dirty line. You should also have a footbath at the line as an extra layer. This protocol is not as effective as a shower-in, but it is significantly better than wearing the same clothing and boots throughout the farm. ### How long should a cleaned nursery room sit empty before new pigs arrive? The longer the better, but a minimum of 24 to 48 hours of dry downtime is recommended after washing, disinfecting, and drying. The drying period is critical because most pathogens are inactivated by desiccation. Some operations aim for seven days of downtime between groups. If you are dealing with a disease outbreak, extend the downtime to 14 days or more, and consider testing the room for residual contamination before repopulating. ### Do I need to shower between the farrowing barn and the nursery on the same day? If both barns are on the same site and you have a shower facility, yes, you should shower between them. The farrowing barn is the cleanest area on your farm, and the nursery is the dirtiest. Showering between them prevents you from carrying nursery pathogens to the farrowing barn. If you do not have a shower, you must at least change boots and coveralls completely between the two barns. ### What should I do if a visitor refuses to follow my biosecurity protocol? Do not let them enter the barn. The protocol applies to everyone, including the owner, the veterinarian, and the delivery driver. If a visitor refuses to comply, ask them to conduct their business outside the barn or reschedule the visit. One noncompliant visitor can undo months of careful biosecurity and cause a disease outbreak that costs far more than the inconvenience of a refused visit. ### How do I know if my biosecurity protocols are working? You know your protocols are working if you are not seeing disease outbreaks and if your diagnostic testing shows that your herd remains negative for the diseases you monitor. You also know by tracking performance indicators such as pre-weaning mortality, nursery mortality, and average daily gain. If these metrics are stable or improving, your biosecurity is likely working. If they are declining, investigate whether a biosecurity failure has occurred. ### What is the single most important biosecurity measure for a farrowing barn? The single most important measure is a complete boot and coverall change at the barn entrance, with dedicated boots and coveralls that never leave the barn. This is the foundation of all other biosecurity measures. If you only do one thing, do this. It is simple, it is effective, and it directly interrupts the most common route of disease transmission. ## Related Farming Guides This section will be populated programmatically with links to related farming guides on swine production, pig health, and barn management. Check back for updates or explore the farming library for more in-depth articles on farrowing management, nursery pig care, and disease prevention. ## Related Clinical & Scientific Guides * [Pig Enrichment Programs and Behavior Monitoring](/knowledge/animal-farming/swine/pig-enrichment-programs-and-behavior-monitoring) * [Swine Handling Facility Design for Safe Pig Movement](/knowledge/animal-farming/swine/swine-handling-facility-design-safe-pig-movement) * [Swine Feeding Management for Grow-Finish Pigs](/knowledge/animal-farming/swine/swine-feeding-management-for-grow-finish-pigs) ## References - National Pork Board: https://www.pork.org/ - USDA APHIS Swine Health: https://www.aphis.usda.gov/livestock-poultry-disease/swine - FAO Pig Production: https://www.fao.org/pig-production-and-products/en/ - 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.