What is the primary role of colostrum for newborn lambs?

Colostrum is critical for the health and survival of newborn lambs primarily because it provides essential antibodies that confer passive immunity. After birth, lambs are particularly vulnerable to infections, as their immune systems are not fully developed. The antibodies found in colostrum are produced by the mother and are specifically designed to protect the lambs against diseases they may encounter shortly after birth. This maternal transfer of immunity is crucial in the first hours of life, as lambs can only absorb a limited amount of these antibodies through their intestines during this time.

While colostrum does also contain a range of vitamins and energy sources beneficial for the lamb, its most vital function is to protect the newborn through the provision of antibodies. Therefore, the primary role of colostrum in the early life of lambs centers on immunity, making it essential for their overall health and development.