Calves are born without antibodies needed to fight off disease. The only source of antibodies available for the first few weeks of a calf’s life comes from maternal colostrum, the first milk produced by the cow. Calves are able to absorb these antibodies for approximately 24 hours of life, and absorption rates vary widely. Currently, only 15-50% of antibodies consumed are actually absorbed, requiring much improvement. The proposed research project will investigate how, where, and when the antibodies are absorbed.