Seroconversion to BVDV following arriving from the feedlot has actually been documented for being related to the prevalence of respiratory sickness in feedlot calves. Calves that arrive at the feedlot with significant titers to BVDV have also been revealed to generally be not as likely to develop respiratory disease, and https://eenvoudigontwerpen.nl/2024/03/27/alles-wat-je-moet-weten-over-het-volgen-van-een-ehbo-cursus-in-den-haag/