The next time your veterinarian preg-checks your cows, tell him to identify any that are carrying twins.

And when he tells you, don’t curse and shake your head.

Instead, give the cow a special tag or marking to let everyone know that she is carrying twins, says Sam Leadley, calf-care expert at Attica (N.Y.) Veterinary Associates.

Then, at dry-off, divert these cows to the pre-fresh pen. These cows need close observation and timely calving assistance once labor begins to deliver two healthy calves and have a good lactation.