Transfer of passive immunity in dairy calves

Abstract

Colostrum intake is vital for the transfer of immunoglobulins from dam to calf, enabling a functional immune response when required during early life. Colostrum management is therefore a key part of preventing disease and mortality in young dairy calves. Additional benefits of adequate colostrum provision include improved growth and future milk yield. Research indicates the need for more stringent targets with respect to both colostrum provision for calves and when monitoring calves for transfer of passive immunity (TPI). The extent of TPI in calves is reflected in the concentration of immunoglobulin G (IgG) in serum, and is under the influence of a multitude of factors, many of which may be managed by farmers and veterinary surgeons in order to improve TPI on farms.