A calf cannot produce its own antibodies for one to two months, so the passive immunity a calf receives from a cow’s colostrum is critical to its health and development according to Vigortone. In order to be effective, the colostrum must be consumed by the calf as soon as possible and definitely within the first 24 hours.
Colostrum can be frozen and used at a later date without a loss of quality. However, it is important to follow necessary guidelines, found on the Beef Site, when collecting and storing the colostrum.
Vaccinations boost the antibodies in the cow, which in turn will affect the calf when it consumes colostrum. As always, follow proper handling and storage techniques of vaccines to ensure effectiveness and safety according to MSU.