By Blake Jackson
Advances in pig genetics have increased litter sizes over the years, but they have also resulted in greater variation in piglet birthweights.
According to Penn State University reproductive biologist Claire Stenhouse, low birthweight piglets face a much higher risk of illness and death, particularly during the first 72 hours after birth.
Providing timely care during this critical period can significantly improve survival rates and animal welfare.
Low birthweight often develops before birth due to limited uterine space, uneven placental function, differences in embryo development, or maternal factors such as poor nutrition, heat stress, and health challenges during pregnancy. These conditions restrict fetal growth and produce smaller, weaker piglets.
Because of their limited body reserves, low birthweight piglets struggle to regulate body temperature, compete for nursing, and consume enough colostrum, which is essential for immunity. They also have less energy, reduced mobility, and are more vulnerable to starvation and accidental crushing by the sow.
Farmers can identify at-risk piglets by their small size, thin body condition, wrinkled skin, narrow head shape, and delayed movement. Recognizing these signs early allows producers to provide immediate support when it is most effective.
Successful management begins before farrowing by ensuring sows receive balanced nutrition, maintain proper body condition, and are protected from heat stress. Careful monitoring during farrowing also helps reduce complications.
Once piglets are born, keeping them warm and dry should be the first priority, followed by ensuring they receive colostrum within the first several hours.
Split suckling and cross-fostering can improve nursing opportunities by reducing competition from larger littermates. Continued observation during the first three days is essential to identify weak piglets and provide additional assistance when needed.
With prompt intervention and proper management, many low birthweight piglets can survive and thrive despite their early disadvantages.
Photo Credit: istock-deyanarobova
Categories: Pennsylvania, Livestock, Hogs