I am purchasing 5 cows (3-4 yr olds) that are registered red angus. My question is this: Since they have been bred by a registered RA bull; Does the Sire owner have to sign and date the forms for registration when the calves are born? Or, as long as I have the registered number of the Sire, is it ok if I put that information down myself? I know the Hereford Association requires the Sire owner to sign and date the registration form, but dont know what the proper way is for the Red Angus Assoc.