Precalving Vaccination Programs for Cows
Heather Smith Thomas
Angus Beef Bulletin
The best protection against disease in newborn calves is making sure they get an adequate amount of good-quality colostrum, containing antibodies against most of the pathogens they may encounter, soon after birth. If the dam has a chance to build a high level of antibodies before calving, she passes this temporary immunity to her calf via colostrum.