It depends on a ton of medical history. Did the cow have a previous cesaren for example. That can make any follow up birth a cesaren or risc a tear in the womb

It depends on a ton of medical history. Did the cow have a previous cesaren for example. That can make any follow up birth a cesaren or risc a tear in the womb during birth. Then there are vaccinations or the calf may be aborted late stage due to sickness.