8 Tools for Monitoring Sows During Farrowing Season

Farrowing season brings cold nights, sudden schedule changes, and the high-stakes excitement of welcoming new piglets to the homestead. Relying solely on midnight barn visits drains your energy and leaves too much to chance during critical birthing windows. Equipping your small-scale pig operation with the right monitoring tools keeps both sow and litter safe while preserving your sanity.

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Key Signs That Your Sow Is Ready to Farrow

Recognizing early behavioral changes prevents last-minute panics and ensures your barn is prepped before labor begins. Roughly 24 to 48 hours before farrowing, a sow becomes restless, frequently standing up, turning around, and rearranging bedding. This nesting instinct is a clear signal that labor is approaching, prompting her to paw at straw and scrape floor space to construct a protected bed for her piglets.

Physical markers complement these behavioral shifts as the birth window narrows. Within 12 to 24 hours of delivery, the sow’s vulva swells significantly, and her teats become rigid and distended. Expressing a few drops of colostrum from the rear teats confirms that piglets are hours away. Additionally, her respiration rate will spike, often doubling from a normal 20–30 breaths per minute to over 60 breaths per minute during early pre-farrowing contractions.

Setting up a quiet, clean, and draft-free environment during this window gives the sow time to settle. Distracting noise or sudden disturbances can stall labor and increase stress levels for the dam. Once nesting activity reaches a peak and milk flows easily, labor is imminent, making close monitoring essential.

Wireless Barn Camera – Reolink Argus 3 Pro

Continuous visual access lets you watch labor progress from your house without repeatedly barging into the stall. A quiet, undisturbed pen reduces sow anxiety and keeps labor moving at a steady pace. A dedicated barn camera acts as your eyes, letting you check contractions and newborn arrivals on a phone screen.

The Reolink Argus 3 Pro stands out for small-acreage farms because it operates on a rechargeable battery paired with a solar panel attachment, eliminating the need to run hardwired electrical lines through wood-frame outbuildings. It delivers crisp 2K resolution and color night vision, making it easy to distinguish between light bedding and dark-skinned piglets in low-light conditions.

• Key Specs & Features: 100% wire-free setup, 2.4GHz/5GHz dual-band Wi-Fi, IP65 weatherproof rating, integrated spotlight.
• Practical Considerations: Requires a functional 2.4GHz Wi-Fi signal at the barn site; lens dust must be wiped down weekly in dirty straw pens.

This setup is ideal for homesteaders with Wi-Fi reaching their outbuildings who want low-maintenance video feeds. It is not suitable for remote pastures that lack any wireless internet coverage or cell signal relay.

Digital Animal Thermometer – iProvèn DT-R1221

Monitoring body temperature provides vital baseline data before, during, and after farrowing. A sow’s normal rectal temperature hovers between 101.5°F and 102.5°F. A drop of roughly one degree often precedes farrowing by 12 hours, while a sudden spike above 103.5°F post-delivery signals dangerous conditions like metritis (uterine infection) or mastitis (udder inflammation).

The iProvèn DT-R1221 provides a rapid, accurate rectal reading in under 10 seconds, which minimizes stress for an irritated sow. Its flexible tip reduces the risk of tissue injury if the sow shifts suddenly during testing. The waterproof casing simplifies cleaning, and the backlit digital screen makes reading numbers easy in poorly lit stalls.

• Key Features: 10-second response time, flexible soft-tip probe, memory recall for last temperature, waterproof casing.
• Practical Considerations: Always use a drop of mineral oil or obstetric lubricant; sanitize with isopropyl alcohol wipes after every single use.

This tool is a necessity for keepers who take proactive physical health baselines seriously. It is unnecessary for handlers who are uncomfortable working closely around the hindquarters of a heavy, nesting sow.

Temperature Sensor – SensorPush HT1 Wireless

Newborn piglets are born with minimal body fat and cannot regulate their internal heat for the first few days of life. Drafty pens or sudden ambient temperature drops can cause fatal hypothermia or lead piglet huddling, which sharply increases crushing deaths. Monitoring room temperature ensures your supplemental heat sources are maintaining a steady 85°F–90°F in the piglet zones.

The SensorPush HT1 Wireless tracks temperature and humidity continuously, logging data onto a smartphone app. Using a Swiss-made sensing element, it delivers precision readings and allows you to set custom threshold alerts, sounding an alarm on your phone if the creep area drops below a safe temperature overnight.

• Key Specs & Features: Compact 1.5-inch square frame, Bluetooth range up to 325 feet, replaceable CR2477 coin cell battery.
• Practical Considerations: Hang the sensor out of reach of curiosity-driven sow snouts; requires the optional SensorPush G1 Wi-Fi Gateway for alerts when away from home.

It is perfect for growers who want passive environmental monitoring with instant push notifications. Farmers who already sit in the barn throughout the entire farrowing process will find its continuous tracking feature redundant.

Audio Barn Monitor – VTech DM111 Audio Monitor

While cameras provide visual confirmation, continuous audio monitoring lets you listen for critical signs while completing chores elsewhere or resting. A experienced ear picks up labor grunts, piglet squawking, or the sharp squeal of a piglet trapped underneath a heavy sow long before a visual check reveals an issue.

The VTech DM111 Audio Monitor utilizes DECT 6.0 digital technology, which eliminates background static and delivers clean, interference-free sound transmission from barn to house up to 1,500 feet away. Its simplicity is its strength—plug the transmitter into the barn wall, take the battery-powered receiver indoors, and listen continuously without worrying about Wi-Fi drops.

• Key Specs & Features: 1,500-foot operating range, 5-level visual sound indicator on receiver, belt clip, secure digital transmission.
• Practical Considerations: Keep the transmitter away from loud running water or vibrating exhaust fans; place it high on a wall to catch stall sounds clearly.

This audio monitor is a budget-friendly pick for homesteaders sleeping within distance of their barn who want instant, hands-free acoustic updates. It is less useful if your farrowing building is constructed with heavy concrete walls that block basic radio frequencies.

Thermal Imaging Camera – FLIR ONE Pro Camera

Standard cameras confirm location, but a thermal imager quickly exposes temperature variations across the pen. Wet piglets lose body heat rapidly; a thermal camera allows you to spot chilled, shivering piglets instantly against warm bedding. It also assists in identifying early-stage mastitis by showing localized heat signatures along the sow’s udder line.

The FLIR ONE Pro plugs directly into the lightning or USB-C port of your smartphone, turning your phone into an advanced thermal scanner. Utilizing VividIR image processing, it enhances resolution so you can distinguish small piglet outlines from warm background surfaces, taking the guesswork out of thermal readings.

• Key Specs & Features: Dual thermal and visible sensors, measure temperatures up to 752°F, drop-tested construction, companion mobile app.
• Practical Considerations: The internal battery lasts roughly 45 minutes of active use per charge; keep the phone connector clean of barn dust.

This unit is ideal for cold-climate breeders managing winter litters where hypothermia poses a constant threat. It is an expensive luxury for farms that only farrow in warm spring or summer months.

Farrowing Heat Lamp – Premier 1 Prima Lamp

Chilled piglets are slow piglets, and sluggish newborns quickly end up stepped on or crushed. Providing a stable, warm zone—a protected area off to the side of the sow—draws piglets away from the sow’s legs when they are not actively nursing.

The Premier 1 Prima Lamp addresses the severe fire risks associated with low-cost hardware store utility lights. It features a heavy-duty, impact-resistant plastic housing that resists crushing if knocked, an enclosed top structure that prevents dust from settling on hot bulbs, and a thick, wire grill guard protecting the heat element.

• Key Specs & Features: Reinforced nylon guard structure, heavy-gauge hanging chain attachment, compatible with up to 250W infrared bulbs.
• Practical Considerations: Never hang this or any heat lamp by its electrical cord alone; secure it with the provided steel chain to a structural ceiling beam.

This heat lamp is a non-negotiable safety tool for any farrowing barn using heat bulbs. It is unnecessary if you rely exclusively on hydronic radiant floor heating or climate-controlled farrowing rooms.

Farrowing Heat Mat – Kane Piglet Heating Mat

While heat lamps warm piglets from above, heating mats provide consistent bottom heat that rapidly dries newborn coats and keeps belly temperatures stable. Placing a mat in a dedicated creep area encourages piglets to sleep away from the sow, lowering crushing losses significantly during the first 72 critical hours.

The Kane Piglet Heating Mat is constructed from high-density, easy-to-clean polyethylene that withstands mud, moisture, and high-pressure washing. Its insulated bottom directs 100% of generated warmth upward toward the piglets, ensuring efficient power usage, while its textured surface offers traction for slippery newborns.

• Key Specs & Features: High-density enclosure, uniform surface heat distribution, optional master rheostat controller, steel-wrapped power cord.
• Practical Considerations: Place on flat, level surfaces; power cords must run through protective PVC or steel conduit to prevent sow chewing.

This heat mat is an excellent long-term investment for dedicated farrowing stalls with concrete or wooden subfloors. It is poorly suited for loose dirt or deep-litter straw systems where bedding buries the heating surface.

Obstetric Piglet Snare – Neogen Ideal Snare

Most farrowings proceed smoothly, but when a piglet becomes stuck in the birth canal, time is critical. A delay of more than an hour between piglets risks losing the rest of the litter to suffocation inside the uterus. Having an obstetric snare on hand allows you to assist delivery safely without causing damage to the sow’s internal tissues.

The Neogen Ideal Snare uses a flexible cable loop encased within a smooth, rigid plastic tube, allowing for precise single-handed placement over the piglet’s head or rear legs. Its locking mechanism holds gentle tension securely, giving you the control required to gently pull in synchronization with the sow’s natural contractions.

• Key Specs & Features: Stainless steel internal cable, smooth rounded edges, locking adjustment handle, autoclavable material.
• Practical Considerations: Liberal application of sterile obstetric lubricant is required; loop must be placed behind the piglet’s upper teeth or skull ears—never around the soft lower jaw.

This snare is essential emergency equipment that every pig breeder should store in their birthing kit. It should not be used by keepers who have not learned basic manual piglet extraction techniques.

How to Set Up Your Farrowing Monitoring Station

Setting up your equipment well before the sow’s due date avoids last-minute adjustments during active labor. Place your wireless camera high on a pen support post angled down toward the primary nesting corner. Run power cords through thick PVC conduit along wall junctions to keep them well away from sow teeth and curious snouts.

Establish a protected creep area along a side wall using vertical dividers that allow piglets passage while blocking the sow. Secure your Premier 1 Prima Lamp or Kane Heat Mat within this zone, setting ambient temperature targets around 85°F–90°F. Ensure the heat lamp hangs at least 20 inches above the mat or bedding floor to avoid overheating or fire hazards.

Assemble an emergency totes container right outside the pen wall to keep hand tools accessible. Store your iProvèn Thermometer, Neogen Snare, obstetric lubricant, clean towels, iodine solution, and disposable gloves together. Keeping these items grouped saves valuable minutes when a sow requires immediate delivery assistance.

Crucial Indicators That Require Intervention

Normal piglet delivery intervals run between 15 to 20 minutes once active labor begins. If a sow strains hard for over 45 minutes without producing a piglet, or if more than an hour elapses between arrivals, manual intervention is necessary. Prolonged labor causes piglet oxygen deprivation, leading to stillbirths across the remaining litter.

Watch for abnormal discharge that indicates internal distress or infection. Clear fluid mixed with small amounts of blood is normal, but heavy brown, green, or foul-smelling discharge prior to piglet delivery signals trouble. Passing portions of the placenta before all piglets are born also indicates labor stall or fetal distress.

Keep a close eye on sow behavior toward her newborn piglets during early nursing. Sows experiencing severe post-birth pain or hysteria may bite at piglets or refuse to lie down flat to expose udders. If a sow remains overly restless or aggressive, separate the piglets into the creep area under the heat lamp between nursing sessions.

Keeping Detailed Records for Future Success

Accurate data tracking transforms individual farrowing seasons into long-term herd improvements. Record the exact timeline of events, including the start of nesting, first piglet delivery, total duration of labor, and complete passage of the placenta. Note any interventions required, such as using the obstetric snare or administering oxytocin under veterinary guidance.

Log metrics for every newborn piglet to track sow productivity over time. Note individual birth weights, total litter size, ratio of born-alive versus stillborn, and any congenital deformities. Combine these numbers with 21-day weaning weights to evaluate milk production and mothering ability across your herd.

Use these detailed logs to make informed culling and selection decisions for future seasons. Sows with short, trouble-free farrowings, high piglet survival rates, and calm temperaments should be retained as core breeding stock. Sows requiring frequent intervention or showing poor mothering instincts should be culled from your breeding program.

Equipping your farrowing barn with targeted monitoring tools takes the guesswork out of piglet delivery and protects your hard work. With the right mix of thermal controls, remote eyes, and emergency equipment, you can guide your sows safely through labor. Prepare your station early, keep your records precise, and enjoy a healthy, thriving crop of piglets this season.