“They could have Theileria, could have any bloody thing. Why would you want to expose those to your best females? “Just vaccinate them and move on.”
If you already have a herd of cattle, keep your new auction purchases separate from the herd for a week to 10 days. Talk to your veterinarian about a vaccination schedule. Ask the vet to the farm as soon as possible to vaccinate your cattle and check their health before introducing them ...