Every year we have a couple hard pulls on our two year olds.
Sometimes they are slow to get up or stagger around when they do get up. I think they pinch a nerve.
Most are up and going within an hour or two, however we've had them down for days. Only one in the last 10-15 years didn't make it.
What would you guess the heifer weighs?
Calf weight?
Our Angus heifers weigh +1200lbs and every once in awhile we pull a calf in the 80-90 lb range.
As was mentioned buy a calf puller, especially if you're going to buy bred stock.