A sow's milk is most likely deficient in which nutrient?

Sow's milk is typically noted for its adequacy in many nutrients essential for piglet growth; however, it is notably low in iron. This deficiency is significant because newborn piglets are born with limited iron stores and they rely on their mother's milk for early nourishment. Without sufficient iron, piglets are at risk of developing anemia, which can lead to serious health issues.

In commercial swine production, it is common practice to administer iron supplements to piglets shortly after birth to prevent anemia and ensure their healthy development. While sow's milk contains various other nutrients, such as protein and some minerals, the lack of iron is what necessitates additional supplementation, illustrating the importance of this particular mineral in piglet health during their early stages of life.