Posted 5/15/2019 06:09 (#7498007 - in reply to #7497906) Subject: RE: How old do new born calves have to be to get there shots?
Calves should have maternal antibody protection from the cow up to around six months. What you are wanting to do is not normal by any means. But I don't know your farm disease profile. Routine vaccines to calves put out on pasture around one month of age would be 7 way clostridium and a pinkeye vaccine if you have that challenge. Like mentioned talk to your Vet to tailer your program based on your herd health.