Pigs are known for their nurturing behavior, but sometimes they accidentally lay on their babies, which can be concerning. This usually happens when the piglets are too small, and the mother is unaware of their presence. When a mother pig, or sow, gives birth, she is focused on her piglets, but in her size and during the nursing process, she might unintentionally squish them.
Understanding why this happens can help you appreciate how these animals care for their young. In many cases, piglets may not always move out of the way quickly enough, especially when they are very young and still learning to navigate their environment. Some factors, like the sow’s health and the space she has, can also influence this behavior and the risk of crushing.
As you read on, you’ll discover more about the ways mother pigs protect their babies and how farmers can create safer environments for both sows and piglets. Learning about their instinctual behaviors can give you a better understanding of these fascinating animals and their role in farming.
Understanding Pig Behavior and Farrowing

Farrowing is a critical time for sows and their piglets. Understanding what happens during this period can help you better care for them, especially during gestation and after the babies are born.
Gestational Behaviors of Sows
During pregnancy, sows display specific behaviors that are important to their well-being. In the later stages of gestation, you may notice increased restlessness or nest-building activities. This is a natural instinct as the sow prepares for farrowing.
Sows often begin to seek quiet, comfortable spaces. They may use their snouts to move straw or bedding to create a safe area for giving birth. This behavior helps reduce stress and prepares them to receive their piglets.
The Farrowing Process
Farrowing typically begins with signs of discomfort, such as pacing or nesting. Once the process starts, sows experience contractions that lead to the birth of the piglets. Some piglets may be born head first, while others may arrive rear feet first, both being normal.
After birth, the sow usually remains lying down for some time. She may stand briefly to help clean her newborns and encourage them to nurse. It’s common for the sow to show little movement as she focuses on the piglets.
Importance of Nest Building
Nest building is essential for the sow as it provides a secure environment for her piglets. This behavior starts a few days before farrowing and involves arranging materials like straw or grass. The sow’s choice of location matters; it should be calm and away from disturbances.
A well-built nest helps keep the piglets warm and protected. The soft bedding can also decrease the risk of the sow accidentally laying on her young. Encouraging your sow to nest comfortably can lead to a more successful farrowing experience.
Causes and Prevention of Overlying
Understanding why sows lay on their piglets is crucial for ensuring their safety. This section covers the reasons behind overlying and offers ways to create a safer environment for mother pigs and their young.
Why Sows Lay on Their Piglets
Sows may accidentally lay on their piglets due to their large size compared to the small piglets at birth. A newborn piglet typically weighs about 1.2 kg, while a sow can weigh around 250 kg. This size difference can lead to crushing, especially when the sow lies down to rest or nest.
Farrowing difficulty can also play a role. A sow under stress during farrowing might not be fully aware of her surroundings. Hormones like oxytocin, which help with lactation and bonding, can sometimes make sows more relaxed, but not always attentive to their piglets. As a result, accidental overlying can occur.
Designing Safer Farrowing Environments
Creating a safe farrowing area is vital in reducing the risk of overlying. Providing enough nesting material allows sows to feel secure and comfortable. This can help them position themselves better to avoid crushing their young.
You should consider using farrowing pens designed with safety in mind. These pens can include features like side barriers that keep piglets safe while allowing the sow to move freely.
Adequate space is also important. A larger area gives the sow room to change positions without risking her piglets. Regular monitoring of the farrowing area can help you spot and address potential hazards before they become issues.
Key Management Practices
Implementing strong management practices is essential to prevent overlying. One effective strategy is to reduce disturbances during feeding and other activities. Keeping the sow calm can help her be more aware of her piglets.
Regular observation is crucial. By watching the sow and her piglets closely, you can identify if she is becoming agitated or stressed. If you notice signs of trouble, timely intervention can prevent accidents.
In addition, providing high-quality nutrition during lactation can ensure that sows are healthy and less stressed, which may lead to safer behavior around their piglets.
Caring for Newborn Piglets

Caring for newborn piglets is essential for their survival and growth. Focus on providing the right nourishment, managing their temperature, and preparing them for weaning. Each aspect plays a critical role in ensuring that your piglets thrive.
Colostrum: The First Nourishment
Colostrum is vital for newborn piglets. This first milk contains essential antibodies that help protect them from diseases. Within the first few hours of birth, ensure that your piglets consume enough colostrum.
Aim for each piglet to get at least 10% of its body weight in colostrum during the first day. Monitor the sow to encourage nursing, helping avoid issues like mastitis. You can also use supplemental colostrum if the sow has low milk production. This support can significantly reduce the risk of infection and increase piglet survival.
Managing Piglet Chilling and Infections
Newborn piglets are prone to chilling, which can lead to serious health problems like infections and even death. To prevent this, maintain a warm environment, ideally between 85°F and 90°F. Use heat lamps to help keep piglets warm, especially in colder conditions.
Always check for signs of infection, such as lethargy or swelling. Infections like erysipelas can be deadly. If you notice any unusual behavior or physical symptoms, consult a veterinarian immediately. Keeping electrolytes on hand can also help if piglets show signs of dehydration or stress.
The Weaning Process
Piglets go through a critical transition during weaning. This process usually happens when they are 3 to 4 weeks old. To reduce stress, the weaning process should be gradual.
Start by introducing solid feeds while the piglets are still nursing. Then, set up a creep area where only piglets can access their own feed. This protects their food from the sow and encourages independence.
Next, monitor their eating habits closely. Provide a balanced diet to support their growth. Be prepared for some behavioral changes as they adjust to life without continuous nursing.