The ear tags are their names...or numbers. Thus they are fed daily and cared for. The presence of snow doesn't mean it's too cold for bovines to be outside a barn (where germs thrive in the moist warmth). Many feed sytems are located outside.
BRING THEM IN FROM THE COLD! SOMEBODY NEEDS TO CALL SOMEONE & DO SOMETHING ABOUT THIS; I BET THE SELFISH BIG MONEY FARMER THAT OWNS THEM DIDN'T EVEN NAME THESE POOR BABIES.