Be sure to mark your calendars as you block out time for the many all-class reunions being held this summer. The keys to disease prevention in newborn calves are passive transfer of immunity and exposure to pathogens. We place a lot of emphasis on the former and too little emphasis on the latter. Minimizing the calf's exposure to pathogens is one of the surest, easiest, and most cost effective methods of improving calf survival. Bedding and manure that contain organisms or oocysts are a ready source of contamination.
Newborn calves are at a real disadvantage when it comes to fighting disease.
Not only are they highly stressed, but their immune defenses are minimal until the calf begins to consume colostrum. It is very important to minimize the potential infection of the navel cord by disinfecting the navel. Studies have shown that calf mortality is reduced when the navel is dipped shortly after calving. Therefore, it should be a consistent management practice for all dairy producers. This will inhibit microbial migration into the calf's body.