Outdoor Farrowing Huts: Placement and Management

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

Key Takeaways

Optimal farrowing hut placement requires well-drained ground with a 2-5% slope, facing south or southeast for morning sun and protection from prevailing winter winds, with huts spaced 10-15 feet apart to mitigate disease transmission.
Piglet survival hinges on a warm microclimate (thermoneutral zone ~90-95°F) provided by deep, packable bedding (straw or wood shavings) and hut design features like farrowing rails or creep areas to prevent crushing and chilling.
The critical first 72 hours post-farrowing demand intensive monitoring for crushing, chilling, and starvation, with prompt intervention for weak piglets including warming and colostrum administration.
Effective management includes moving sows to huts 3-7 days pre-farrowing, ensuring adequate lactation ration (14-16% crude protein) and constant access to clean water, and recognizing signs of dystocia requiring veterinary intervention.
Outdoor systems necessitate robust fencing (e.g., multi-strand electric fence with minimum 4,000-5,000 volts) and predator control measures to protect vulnerable piglets from threats like coyotes, foxes, and feral swine.

Raising pigs outdoors offers a lower-cost alternative to confinement barns, but it demands careful attention to farrowing. The outdoor farrowing hut is the centerpiece of a pasture farrowing system, and its placement and management determine whether you save money or lose piglets. This guide covers the practical decisions you face when setting up outdoor farrowing: where to put huts, how to prepare them, what bedding to use, how to manage sows and piglets in the field, and what records you need to keep. It is written for independent producers, small farm managers, and anyone transitioning from indoor to outdoor pig production.

At a Glance

Place farrowing huts on well-drained, south-facing ground with a gentle slope of 2 to 5 percent.
Space huts at least 10 to 15 feet apart to reduce disease spread and allow sow movement.
Face hut openings away from prevailing winter winds and toward morning sun.
Use deep, packable bedding such as straw or wood shavings, and add more before each farrowing.
Move huts to fresh ground after each lactation or at minimum once per year.
Most piglet deaths happen in the first 72 hours, so plan for extra checks during that window.
A sow needs about 40 to 60 square feet of personal space inside the hut during farrowing.
Keep a written record of each sow, her litter, and any interventions you make.
Call a veterinarian when you see signs of disease, difficult births, or a pattern of piglet losses.

Understanding Outdoor Farrowing Systems

Outdoor farrowing is a production system where sows give birth and nurse piglets in individual huts placed on pasture or arable land. The sow is not confined to a crate or farrowing pen inside a building. Instead, she has access to an individual hut and an outdoor run or paddock. This system is common in the United Kingdom and parts of Europe, and it is gaining attention in the United States among producers looking for lower capital costs and a different marketing angle.

The outdoor farrowing hut serves several purposes at once. It gives the sow a private, sheltered space to give birth. It protects piglets from crushing by the sow, from cold weather, and from predators. It gives the piglets a warm microclimate separate from the sow's body heat. And it gives you a fixed point in the field where you can check on the family, provide feed and water, and perform routine tasks.

The success of the system depends on matching the hut to the animal, the climate, and the soil. A hut that works well on sandy ground in North Carolina may fail on clay soil in Iowa. A hut that suits a 500-pound sow may be too small for a 700-pound sow. You need to think about your specific conditions before you buy or build anything.

The Role of the Hut in Piglet Survival

Piglets are born without significant body fat and with limited energy reserves. They cannot regulate their own body temperature well for the first few days of life. The thermoneutral zone for a newborn piglet is roughly 90 to 95 degrees Fahrenheit. A typical farrowing hut in cool weather is far below that. The piglets depend on the warm microclimate created by the sow's body, the bedding, and the hut structure itself.

The hut also protects piglets from the two biggest killers in outdoor systems: crushing and chilling. A sow that lies down suddenly can trap a piglet against the floor or wall. A hut with a guard rail or a sloping wall gives the piglet an escape zone. A deep bed of straw gives piglets a place to burrow and stay warm, and it gives them a softer surface that reduces the risk of injury when the sow lies down.

Comparing Outdoor Farrowing to Indoor Systems

Indoor farrowing crates were developed to reduce piglet crushing and to make sow management more efficient. They work, but they come with costs. Buildings, ventilation systems, slatted floors, and manure handling are expensive. A single farrowing crate with its associated pen space can cost several thousand dollars. Outdoor systems replace most of that capital with a hut that costs a fraction as much.

The trade-off is labor and management. Outdoor farrowing demands more daily attention to weather, predation, and individual animal needs. You cannot walk through a temperature-controlled barn and check on 50 sows in 20 minutes. You have to walk the pasture, check each hut, and respond to conditions that change with the season.

Outdoor systems also bring health advantages. Sows and piglets are exposed to less concentrated manure, which can reduce respiratory and enteric disease pressure. Piglets raised outdoors often have stronger immune systems because they encounter a wider range of environmental microbes. Some producers report fewer cases of neonatal diarrhea in outdoor systems compared with indoor systems, though this depends heavily on your management.

Choosing the Right Location for Your Farrowing Pasture

Before you place a single hut, you need to choose the right piece of land. The location of your farrowing pasture affects drainage, piglet survival, sow comfort, and your daily labor. Take the time to walk your land and evaluate each potential site.

Drainage Is the First Priority

Poor drainage is the single most common cause of outdoor farrowing problems. Wet ground leads to muddy huts, wet bedding, chilled piglets, and increased disease pressure. It also makes your work harder because you cannot drive equipment to the huts without making ruts.

Look for ground that drains quickly. Sandy loam or gravelly soils are ideal. Heavy clay soils hold water and stay wet for days after rain. If you only have clay ground, you can still use it, but you will need to work harder at bedding management and you may need to move huts more frequently.

Test the drainage informally by digging a small hole, filling it with water, and timing how long it takes to drain. A hole that drains within 24 hours is acceptable. A hole that still holds water after 48 hours is a warning sign. You can also look at the vegetation. Ground that grows water-tolerant plants such as sedges, rushes, or buttercups is likely to stay wet.

Slope and Aspect

A gentle slope of 2 to 5 percent helps water run away from the huts. Steeper slopes are harder to work on and can create erosion problems. Flat ground can work if the soil is very well drained, but you need to be careful about water pooling around hut entrances.

Aspect matters for both cold and hot weather. In most climates, a south or southeast facing slope is best. The hut entrance gets morning sun, which warms the bedding and dries the ground after overnight dew. The south-facing aspect also protects against cold north winds in winter. In very hot climates, you may want some afternoon shade to keep sows from overheating.

Wind Protection

Prevailing winds can make a good site miserable. In winter, a cold wind blowing into a hut entrance chills the piglets and makes the sow uncomfortable. In summer, a lack of airflow can make the hut unbearably hot.

Look for natural windbreaks such as tree lines, hedgerows, or hills. If you have no natural protection, you can create a windbreak with round bales, fence panels, or a constructed wall. Place the windbreak on the side of the prevailing wind, leaving the hut entrance open to the south or east.

Proximity to Water and Power

You need to get water to the sows. A pasture farrowing system requires clean, fresh water at all times. If you have to haul water every day, the distance from your water source to the farrowing pasture becomes a major labor cost. A water line buried to the pasture with frost-proof hydrants is ideal. If that is not possible, plan for a large water trailer that you can fill at a central point.

You also need power for electric fencing, and you may want power for lights, heat lamps, or tools. A solar-powered fence charger works for many operations, but you need to confirm it can handle the fence length and the vegetation load. If you plan to use heat lamps for piglets in cold weather, you need a reliable power source or a battery system that you can recharge.

Access for Equipment

You will need to move feed, bedding, and equipment to the huts. You will also need to move sows and piglets. A lane or path that can handle a small tractor, a four-wheeler, or a utility vehicle makes the work much easier. If you plan to use a skid steer or a tractor with a loader to move huts, make sure the ground can support that weight without bogging down.

Rotation and Future Ground

Outdoor pig production works best when you rotate animals to fresh ground. Continuous use of the same pasture leads to a buildup of parasites, bacteria, and manure nutrients. It also degrades the sod and creates muddy conditions.

Plan your farrowing area as part of a rotation. You need enough land to move the farrowing paddocks each year, and you need a plan for what happens to the used ground. Many producers follow pigs with cattle, sheep, or crops. The pigs break up the soil and add fertility, and the following enterprise benefits from that.

Selecting and Sourcing Farrowing Huts

The market offers a wide range of outdoor farrowing huts. You can buy commercial models, build your own, or modify existing structures. The right choice depends on your budget, your climate, and the size of your sows.

Commercial Huts

Commercial farrowing huts are typically made of galvanized steel, fiberglass, or heavy plastic. Steel huts are durable and can last 20 years or more with proper care. Fiberglass huts are lighter and easier to move, but they can crack in extreme cold or when hit by heavy equipment. Plastic huts are inexpensive but may not stand up to rough handling.

Most commercial huts are designed to be moved with a skid loader or a tractor. They have a skid base or a reinforced bottom edge that lets you slide them across the ground. Some have lifting rings or brackets so you can pick them up with a loader.

Look for a hut with an adjustable ventilation opening. In cold weather you want to close the opening to keep heat inside. In warm weather you want to open it fully to allow airflow. A hut without ventilation control will be too hot in summer and too cold in winter.

Building Your Own Huts

Building your own huts can save money, but you need to match the design to the needs of the sow and piglets. The most common homemade designs use plywood panels on a timber frame, with a metal or shingled roof. Some producers use straw bales as walls, covering them with a tarp or metal roof. This works in mild climates but is hard to keep clean and dry in wet weather.

A good homemade hut has these features:

A floor area of at least 40 to 60 square feet for a standard sow
A height that lets the sow stand comfortably without rubbing her back
A rounded or sloped back wall that prevents the sow from crushing piglets against a flat surface
A doorway wide enough for the sow to enter and exit freely, about 24 to 30 inches wide
An overhanging roof or a small porch that keeps rain from blowing into the entrance
A way to secure the sow inside when you need to work with the piglets

If you build with wood, use exterior-grade plywood and treat it with a non-toxic sealant. Avoid treated lumber that contains copper or other heavy metals, because pigs may chew on the wood. Use screws rather than nails where possible, because screws hold better and are easier to remove if you need to repair the hut.

Sizing the Hut to Your Sows

The size of your hut matters more than most producers realize. A hut that is too small makes the sow uncomfortable and increases the risk of crushing. A hut that is too large is harder to keep warm in cold weather.

A standard outdoor farrowing hut for a modern commercial sow is roughly 5 to 6 feet wide and 7 to 8 feet deep. This gives the sow about 40 to 60 square feet of floor space. The sow needs room to lie down, stand up, and turn around without hitting the walls.

If you have very large sows, such as some heritage breeds or heavy commercial lines, you need a larger hut. Measure your largest sow before you buy or build. The sow should be able to lie flat on her side with room to spare at both ends, and she should be able to stand up without her back touching the roof.

Farrowing Rails and Creep Areas

A farrowing rail, also called a guard rail or fender, is a bar or board mounted along the walls of the hut about 8 to 10 inches above the floor and 8 to 12 inches out from the wall. When the sow lies down, her body hits the rail and she cannot press all the way against the wall. The space between the rail and the wall becomes a safe zone where piglets can escape.

The creep area is the space where the piglets stay when they are not nursing. It is usually at the back or side of the hut, separated from the sow by a low partition. The piglets can pass under or through the partition, but the sow cannot reach them. This gives the piglets a place to sleep, eat creep feed, and stay warm without being crushed.

Not all huts come with rails and creep areas. If you buy a basic hut, you can add them yourself. Use smooth, rounded lumber for the rails so the piglets do not get scraped or injured. Mount the rails securely so they do not shift when the sow leans against them.

Preparing the Site and Placing the Huts

Once you have your huts and your location, the next step is site preparation and placement. This is where many producers make mistakes that cost them piglets later.

Ground Preparation

The ground under and around each hut should be level and free of rocks, roots, and debris. A level floor prevents the sow from lying at an angle, which can trap piglets. It also keeps bedding from sliding to one side.

If you are placing huts on a new pasture, mow the grass short before you set the huts. Tall grass holds moisture and makes it hard to see piglets when you are checking the herd. Short grass also dries faster after rain.

Some producers create a slightly raised pad for each hut. You can do this with a loader, scraping soil up to create a mound about 4 to 6 inches high. The pad keeps the hut floor above the surrounding ground, which helps with drainage. If you have heavy soil, a pad of sand or gravel under the hut improves drainage even more.

Spacing Between Huts

The spacing between huts depends on your management style and your land. The minimum spacing is about 10 to 15 feet between huts. This gives you room to walk between them, and it reduces the chance of disease spreading from one sow to another.

Wider spacing of 20 to 30 feet is better if you have the land. Sows are less stressed when they cannot see their neighbors constantly. Wider spacing also reduces the buildup of manure and urine around each hut, which means less odor and fewer flies.

If you plan to use a group farrowing system, where several sows farrow in the same paddock with individual huts, you need even more space. Each sow needs her own territory, and crowding can lead to fighting and piglet injuries.

Orientation of the Hut

The direction the hut faces is one of the most important placement decisions. In most climates, face the entrance to the south or southeast. This gives the hut morning sun, which dries the bedding and warms the interior. It also keeps the entrance out of the north wind.

In very hot climates, you may want to face the entrance to the east or northeast to reduce afternoon heat. You can also place the hut under a shade tree or a shade cloth structure. The sow needs to stay cool to maintain her appetite and milk production.

Make sure the hut is level from side to side and front to back. A hut that tilts to one side will have all the bedding and the sow on the low side. A hut that tilts forward will let rain blow into the entrance. A hut that tilts backward will pool water at the back wall.

Anchoring the Hut

Outdoor farrowing huts are light enough to be moved, which means they can also be moved by wind. A strong storm can flip a hut or push it across the pasture, injuring the sow and piglets inside.

Anchor each hut with stakes or pins driven through the base into the ground. Many commercial huts have pre-drilled holes for this purpose. If your hut does not, you can use rebar pins driven through the base at an angle. You can also place a heavy object such as a concrete block or a pallet of feed inside the hut, but this takes up space and can be a hazard.

Check your anchors after every storm. A hut that has shifted even a few inches can create a gap at the base that lets in wind, rain, and predators.

Bedding Management in Farrowing Huts

Bedding is not a luxury in an outdoor farrowing system. It is the primary tool you have for keeping piglets warm, dry, and alive. Bedding management is a daily task during farrowing season.

Choosing Bedding Material

Straw is the standard choice for farrowing huts. It is absorbent, insulates well, and is easy to pack into a deep layer. Wheat straw and barley straw are the most common options. Oat straw is softer but less absorbent and breaks down faster. Avoid straw that is moldy or dusty, because it can cause respiratory problems in sows and piglets.

Wood shavings are a good alternative, especially if straw is expensive or hard to find. Use large, coarse shavings rather than fine sawdust. Sawdust packs down and becomes wet quickly, and it can irritate the piglets' respiratory systems. Avoid shavings from treated wood or wood that has been painted or glued.

Hay is not a good bedding choice. Hay is more expensive than straw, and it retains moisture. Wet hay breaks down quickly and creates ammonia. It also provides a breeding ground for mold and bacteria.

How Much Bedding to Use

The amount of bedding depends on the weather. In warm weather, a layer of 4 to 6 inches is enough to provide cushioning and absorb moisture. In cold weather, you need much more, up to 12 to 18 inches.

Deep bedding works by letting the piglets burrow into the straw. The outer layer gets wet and dirty, but the inner layers stay dry and warm. The piglets nest in the middle, where the temperature can be 20 to 30 degrees warmer than the outside air.

You should add fresh bedding every 2 to 3 days during farrowing. Before the sow gives birth, add a generous fresh layer. After the piglets are born, add more bedding as needed to keep the nest dry. A sow and her litter can go through a large amount of straw, especially in wet weather.

The Piglet Nest

When the sow is close to farrowing, she will build a nest. This is a natural behavior. She will root and paw at the bedding, arranging it to her liking. You should encourage this by providing deep, loose bedding a few days before the expected farrowing date.

Once the piglets are born, they will instinctively burrow into the bedding. In cold weather, you can help them by creating a shallow depression in the straw near the sow's belly, then placing the piglets in it after birth. This teaches them where to nest and keeps them off the cold floor.

Dealing with Wet Bedding

Wet bedding is your enemy. It chills piglets, promotes bacterial growth, and creates ammonia that irritates the respiratory tract. You need to remove wet bedding regularly and replace it with dry material.

The area just inside the hut entrance gets wet first, because rain and snow blow in and because the sow urinates near the entrance. Check this area every day and remove any wet material. In heavy rain, you may need to add a tarp or a curtain over the entrance to keep the interior dry.

At the end of each lactation, remove all the bedding from the hut. Compost it or spread it on cropland, then let the hut sit empty for a few days to dry out before the next sow arrives.

Managing the Sow Through Farrowing

The sow is the center of the farrowing system. Her health, comfort, and behavior determine the survival of her litter. You need to know how to manage her before, during, and after birth.

Preparing the Sow

Move the sow to her farrowing hut about 3 to 7 days before her expected due date. This gives her time to settle in and build her nest. Moving her too early means she spends more time in the hut than necessary. Moving her too late risks her giving birth in the open.

Before you move her, check her for signs of approaching farrowing. The vulva becomes swollen and relaxed. The udder fills and the teats become prominent. The sow becomes restless and starts to root and nest. Some sows lose their appetite on the day of farrowing.

Handle the sow calmly during the move. Use a board or a sorting panel to guide her, not a whip or a stick. A stressed sow is more likely to have a difficult birth or to be aggressive toward her piglets.

Feeding the Sow in the Hut

Sows in outdoor farrowing huts need a diet that supports lactation. They are producing large amounts of milk, and they need energy, protein, and minerals to do it.

Feed a lactation ration that contains about 14 to 16 percent crude protein and adequate energy. The exact formulation depends on your feed sources and your sow's condition. A sow that is too thin will not milk well. A sow that is too fat may have difficult births and may crush more piglets.

Sows need more feed after farrowing than before. In the last week of gestation, feed about 4 to 5 pounds per day. After farrowing, increase feed gradually to 8 to 12 pounds per day, or more for sows with large litters. Feed twice a day rather than once, because a sow cannot eat enough in a single feeding.

Provide clean, fresh water at all times. A lactating sow drinks a lot of water, especially in warm weather. Check the water supply daily and clean the trough or bowl regularly.

Recognizing the Signs of Farrowing

The first stage of farrowing lasts 2 to 12 hours. The sow becomes restless, gets up and lies down frequently, and may urinate more often. She may shiver or tremble. She is building her nest and preparing her body for birth.

The second stage is the actual birth of the piglets. This typically takes 2 to 6 hours, with piglets born every 15 to 30 minutes. The interval can be shorter or longer depending on the sow and the litter size.

The third stage is the expulsion of the afterbirth. This usually happens within 1 to 4 hours after the last piglet is born. If the afterbirth has not been expelled within 8 hours, call your veterinarian.

When to Intervene in the Birth

Most sows give birth without any help. Intervening too early can do more harm than good. But you need to know when a birth is going wrong.

Call your veterinarian if you see any of these signs:

The sow has been straining for more than 30 minutes without producing a piglet
More than 1 hour passes between piglets
The sow appears exhausted or in distress
You see a piglet stuck in the birth canal, especially one that is backwards or sideways
The sow has a high fever or shows signs of illness
The afterbirth has not come out within 8 hours after the last piglet

If you are experienced and have the proper equipment, you can attempt to assist a difficult birth. But if you are not confident in what you are doing, call a veterinarian. A sow that is injured by a careless intervention may never breed again.

After the Birth

Once the sow has finished farrowing, check her for the number of piglets, the condition of the afterbirth, and her overall health. Make sure she is passing the afterbirth completely. A retained placenta can cause a serious uterine infection.

Check each piglet for signs of weakness, injury, or congenital defects. Dry any piglets that are wet and cold. Make sure each piglet has nursed within the first 2 hours of life. Colostrum, the first milk, is critical for the piglet's immune system. It contains antibodies that protect against disease for the first few weeks of life.

Some producers give an oxytocin injection after farrowing to help with milk let-down and uterine contraction. This can be useful in some situations, but it should only be done under the direction of a veterinarian.

Managing Piglets in the Outdoor Environment

Piglets born outdoors face different challenges than piglets born indoors. They have to cope with weather, predators, and a larger environment. Your job is to give them the best possible start in life.

The First 72 Hours

The first 72 hours are the most dangerous time in a piglet's life. Most piglet deaths happen in this period. The leading causes are crushing by the sow, chilling, and starvation.

Check each litter at least twice a day during this period. Look for piglets that are cold, weak, or unable to nurse. A healthy piglet is active, has a round belly, and sleeps curled up with its littermates. A piglet that is hunched, shivering, or lying apart from the group is in trouble.

If you find a weak piglet, act quickly. Warm it up by holding it against your body or placing it under a heat lamp. Give it colostrum if it has not nursed. Some producers give a glucose or electrolyte solution to boost energy. If the piglet does not improve within a few hours, it may not survive, and you need to decide whether to continue treatment or euthanize it.

Preventing Crushing

Crushing is the number one cause of piglet death in outdoor systems. The sow lies down and accidentally traps a piglet underneath her. This can happen in seconds, and the piglet may suffocate or be injured.

The farrowing rail is your first defense against crushing. It keeps the sow from pressing against the wall and gives the piglets an escape route. Make sure the rail is properly positioned and secure before the sow farrows.

The sow's behavior also matters. Some sows are naturally careful with their piglets. Others are clumsy or careless. A sow that repeatedly crushes her piglets may need to be culled, even if she is a good mother in other ways.

You can reduce crushing risk by providing a deep, soft bed. A piglet that is lying in soft straw can escape more easily than one lying on a hard floor. You can also make sure the sow is not too thin or too fat. A very thin sow has prominent bones that can trap piglets. A very fat sow has trouble lying down gently.

Keeping Piglets Warm in Cold Weather

Cold weather is a major challenge for outdoor piglets. A newborn piglet needs a temperature of about 90 degrees Fahrenheit for the first few days of life. The sow's body provides some warmth, but the piglets cannot reach all of her at once.

The deep bedding nest is the best tool you have. Piglets will burrow into the straw and stay warm. You can help by making sure the nest is deep enough and by adding fresh straw daily.

Some producers use heat lamps or heat pads in the creep area of the hut. These can be effective, but they come with risks. A heat lamp can start a fire if it falls into the bedding. A heat pad can overheat if it is not controlled properly. If you use supplemental heat, check it daily and make sure it is securely mounted.

In extreme cold, you may need to close the ventilation opening in the hut to keep heat inside. But be careful not to close it completely. The sow and piglets need fresh air, and condensation can build up in a sealed hut.

Keeping Piglets Cool in Hot Weather

Heat is also a problem for outdoor piglets. A piglet that gets too hot becomes lethargic and stops nursing. A sow that gets too hot stops eating and produces less milk.

In hot weather, open the ventilation opening fully. Make sure the hut is shaded during the hottest part of the day. You can place the hut under a shade tree or erect a shade cloth over the entrance.

Provide plenty of fresh, cool water for the sow. Some producers add a wallow or a shallow water pool for the sow to cool off in. A sow that is comfortable is more likely to lie still and nurse her piglets.

Creep Feeding

As the piglets grow, they need more nutrition than the sow's milk can provide. Creep feeding gives the piglets a high-quality feed that they can eat on their own. Start creep feeding when the piglets are about 7 to 10 days old.

Place the creep feed in the creep area, where the sow cannot reach it. Use a shallow trough or a flat pan that the piglets can easily access. Start with small amounts and increase as the piglets eat more. A good creep feed contains about 18 to 20 percent crude protein and is highly digestible.

Creep feeding has several benefits. It gives the piglets extra nutrition for growth. It trains them to eat solid feed, which makes weaning easier. And it reduces the nutritional drain on the sow, helping her maintain her condition.

Identifying and Treating Sick Piglets

Piglets in outdoor systems can get sick just like indoor piglets. The most common problems are scours (diarrhea), respiratory infections, and joint infections.

Scours is the most common and the most dangerous. It can be caused by bacteria, viruses, or parasites. The piglets become dehydrated and weak, and they may die quickly. If you see scours in a litter, act fast. Isolate the affected piglets if possible, clean the hut thoroughly, and call your veterinarian for a diagnosis.

Dehydration is the main killer in scours. You can give oral electrolytes to affected piglets to replace lost fluids. Your veterinarian can recommend a specific product and dosage. In severe cases, the piglets may need injections of fluids under the skin.

Respiratory infections show up as coughing, sneezing, and labored breathing. They are more common in cold, damp weather. Make sure the hut is dry and well-ventilated. A sick piglet should be isolated and treated under veterinary direction.

Joint infections cause lameness and swelling in the joints. They are often caused by bacteria entering through small wounds. The piglets may be reluctant to nurse and may fall behind in growth. Treatment usually involves antibiotics, which must be prescribed by a veterinarian.

Fencing and Predator Control

Outdoor pig production requires effective fencing. The fencing serves two purposes: it keeps the pigs in, and it keeps predators out.

Electric Fencing for Sows and Piglets

A permanent or portable electric fence is the standard for outdoor pig production. Sows and weaned pigs respect an electric fence after one or two shocks. Piglets learn quickly from their mothers.

The fence needs to be tall enough to contain adult sows. A height of 30 to 36 inches is usually sufficient. Use multiple strands of smooth wire or a combination of wire and a polytape. The bottom strand should be close to the ground, about 6 to 8 inches, to discourage piglets from crawling under.

The fence charger needs to deliver enough voltage to penetrate the pig's hide and the vegetation that may touch the fence. A minimum of 4,000 to 5,000 volts is recommended. Check the fence voltage regularly with a digital voltmeter. A fence that reads below 2,000 volts will not reliably contain pigs.

Keep the fence line clear of vegetation. Grass and weeds touching the fence drain power and reduce the voltage. You may need to mow or use a weed trimmer along the fence line during the growing season.

Protecting Piglets from Predators

Predators are a real threat to outdoor piglets. Coyotes, foxes, raccoons, dogs, and birds of prey can all kill piglets. The threat varies by region and by season.

A well-maintained electric fence is the first line of defense. Coyotes and dogs will respect a fence that delivers a strong shock. Raccoons can climb fences, so you may need to add a strand of wire at the top or use a fence design that makes climbing difficult.

Guard animals can also help. Livestock guardian dogs, donkeys, and llamas have all been used to protect pigs. A guardian dog that is raised with the pigs will bond with them and protect them from predators. However, guardian animals add cost and require their own care.

The hut itself protects piglets from aerial predators. A piglet that stays inside the hut is safe from hawks and owls. Make sure the hut has a solid roof and that the entrance can be partially closed if needed.

Managing Feral Pigs and Disease Risks

In areas with feral pigs, you need to take extra precautions. Feral pigs can carry diseases that are devastating to domestic pigs, including African swine fever and pseudorabies. They can also breed with domestic pigs if they escape.

A strong perimeter fence is essential in feral pig country. The fence needs to be buried or have a bottom wire close to the ground to prevent feral pigs from digging under. You should also have a protocol for responding to feral pig sightings near your operation.

Recordkeeping and Monitoring

Outdoor farrowing is a data-intensive enterprise. You need to know which sows are performing well, which litters are thriving, and which management practices are working. Good records make these decisions possible.

What to Record

Keep a record for each sow and litter. At minimum, record:

Sow identification number
Breed and parity (number of litters she has had)
Breeding date and expected farrowing date
Actual farrowing date
Number of piglets born alive
Number of stillborn piglets
Number of piglets weaned
Piglet birth weights and weaning weights
Any health problems or interventions
Sow condition and behavior

Record the location of each hut and the date the hut was moved. This helps you track pasture rotation and identify areas that may need rest.

Using Records to Make Decisions

Your records help you identify problems early. If you see a pattern of high piglet mortality in one area of the pasture, you may have a drainage problem or a predator issue. If one sow consistently crushes her piglets, you may need to cull her. If one boar produces poor litters, you may need to replace him.

Records also help you track your costs. You can calculate the cost per piglet weaned, which is the most important economic measure in farrowing. You can compare different bedding materials, feed rations, and management practices to see which are most cost-effective.

Daily Monitoring Routine

A daily routine keeps you consistent and helps you catch problems early. Here is a suggested routine for farrowing season:

Morning check:

Walk the farrowing pasture and count the sows
Check each hut for signs of farrowing
Look for newborn piglets and check their condition
Check feed and water supplies
Add bedding as needed
Check fence voltage and look for damage

Midday check:

Check for sows that are in active labor
Look for any piglets that are cold, weak, or sick
Clean up any wet bedding near hut entrances

Evening check:

Count the sows again to make sure none are missing
Check for any new litters
Check the weather forecast and prepare for cold or storms
Make sure all huts are secure and anchored

Common Mistakes in Outdoor Farrowing

Every producer makes mistakes, especially in the first few years of outdoor farrowing. Here are the most common ones and how to avoid them.

Placing Huts on Poor Ground

The most common mistake is placing huts on ground that is too wet or too exposed. Producers often choose the most convenient location rather than the best location. A wet, muddy farrowing area costs you piglets, time, and money.

Take the time to find well-drained ground. If you have to move your farrowing area to a better location, do it. The cost of moving is small compared with the cost of losing piglets.

Underestimating Bedding Needs

Many producers do not use enough bedding. They think a thin layer of straw is sufficient. In cold or wet weather, this is a death sentence for piglets.

Plan for generous bedding use. A sow and litter can use a large amount of straw during a lactation. Have a reliable supply of bedding and be willing to use it liberally.

Checking the Herd Too Infrequently

Outdoor farrowing requires more frequent checks than indoor farrowing. The weather, the predators, and the environment can change quickly. A litter that is fine at noon may be in trouble by nightfall.

Make a commitment to check the herd at least twice a day, and more often during farrowing season. If you cannot do this yourself, hire a reliable person to do it.

Neglecting the Sow's Nutrition

A lactating sow has high nutritional demands. If she does not get enough feed and water, she will lose weight, produce less milk, and be more likely to crush her piglets.

Feed a high-quality lactation ration and provide clean water at all times. Monitor the sow's condition and adjust feed amounts as needed.

Failing to Rotate Pasture

Continuous use of the same pasture leads to a buildup of parasites and disease. It also degrades the sod and creates mud.

Plan your pasture rotation before you start. Have enough land to move the farrowing area each year, and follow pigs with another enterprise to break the disease cycle.

Ignoring Biosecurity

Biosecurity is just as important in outdoor systems as in indoor systems. Visitors, vehicles, and equipment can bring disease onto your farm.

Limit visitors to your farrowing area. Require clean boots and clothing for anyone who enters. Keep your own equipment clean and disinfected. Do not share equipment with other pig farms.

When to Call a Veterinarian or Extension Agent

You cannot handle every situation on your own. Knowing when to call for help is a sign of good management, not weakness.

Veterinary Emergencies

Call your veterinarian immediately if you see any of these signs:

A sow in labor that has been straining for more than 30 minutes without producing a piglet
A sow that is clearly sick, with a high fever, lethargy, or loss of appetite
Multiple piglets dying without an obvious cause
Signs of a contagious disease, such as scours affecting multiple litters
A sow with a prolapsed uterus or rectum
A sow that cannot stand or walk

These situations can deteriorate quickly. Do not wait to see if the sow improves on her own.

When to Call an Extension Agent

Your local cooperative extension agent can help with many day-to-day decisions. Call an extension agent when you need help with:

Designing a pasture rotation system
Choosing feed rations and supplements
Managing soil fertility and manure application
Identifying plants that may be toxic to pigs
Understanding local regulations for livestock production
Connecting with other producers and resources

Extension agents have access to research and expertise that can save you time and money. They can also help you troubleshoot problems before they become emergencies.

Building a Relationship with Your Veterinarian

A good working relationship with a veterinarian is essential for outdoor pig production. Your veterinarian should know your operation, your animals, and your management style. This makes it easier to get the right advice when you need it.

Schedule a regular herd health visit at least once or twice a year. During these visits, your veterinarian can assess your sows, review your records, and recommend improvements. This is much better than calling only when there is a crisis.

Frequently Asked Questions

How many sows can I manage with outdoor farrowing huts?

A single person can manage 30 to 60 sows in an outdoor farrowing system, depending on the layout of the farm, the distance between paddocks, and the time of year. More sows are possible with good infrastructure and reliable help. Your limiting factor is usually labor, not space. If you are new to outdoor farrowing, start with a smaller group of 10 to 20 sows until you learn the system.

What is the best material for a farrowing hut floor?

A solid floor that you can clean and bed is the standard. Some producers use a concrete pad, which is durable and easy to clean, but it can be cold and hard. Most outdoor huts have a wooden or metal floor that is insulated from the ground by the hut base. Whatever the material, the floor should be level, smooth, and free of gaps that could trap piglet legs. A deep layer of straw over the floor provides the cushioning and insulation the piglets need.

How often should I move the farrowing huts?

Move the huts to fresh ground after each lactation if you have enough land. This breaks the cycle of parasites and bacteria that build up in the soil. If you cannot move after every lactation, at minimum move the farrowing area once per year. Mark the location of each hut on a map so you can track where pigs have been and plan future rotations.

Can I use outdoor farrowing in cold climates?

Yes, outdoor farrowing works in cold climates, but it requires more management. You need deep bedding, wind protection, and possibly supplemental heat for the piglets. Some producers in the northern United States and Canada successfully farrow outdoors year-round. The key is to match your hut design and bedding management to your climate. In extreme cold, you may need to close the hut entrance partially and provide a heat source in the creep area.

How do I keep the hut clean between litters?

After the piglets are weaned and the sow is moved out, remove all the bedding from the hut. Sweep or scrape the floor to remove any manure and debris. Wash the hut with a disinfectant that is safe for use around pigs. Let the hut dry completely before adding fresh bedding and moving in the next sow. If the hut has a wooden floor, inspect it for damage and repair any broken boards.

What should I do with a sow that crushes her piglets repeatedly?

If a sow crushes her piglets more than once, you have a few options. First, check the hut for design problems. Is the farrowing rail in place and properly positioned? Is the bedding deep enough? Is the hut the right size for the sow? If the hut is fine and the sow still crushes piglets, she may not be a good mother. Cull her after weaning this litter. There are enough good mothers in the herd that you do not need to keep a sow that consistently kills her young.

How long should piglets stay in the farrowing hut?

Piglets should stay in the farrowing hut with their mother until weaning, which is typically 21 to 28 days of age. Some producers wean earlier, at 14 to 18 days, but this requires more intensive management and a high-quality starter feed. The hut gives the piglets a safe, warm place to sleep and nurse. Once the piglets are weaned, move them to a nursery area and clean the hut for the next sow.

What is the biggest risk to piglets in an outdoor system?

The biggest risk is chilling, which leads to weakness, starvation, and crushing. A piglet that is cold will not nurse actively. It will lie apart from the litter and lose body heat quickly. A cold, weak piglet is more likely to be trapped when the sow lies down. The solution is simple: keep the piglets warm with deep, dry bedding and a well-designed hut. If you do that, the other risks become much easier to manage.

Related Farming Guides

This section will be populated with links to other farming guides on this site. Check back for related content on pig production, pasture management, and livestock health.

Related Clinical & Scientific Guides

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.