An artificial insemination (AI) program is used on heifers and cows to assure the best genetic qualities. Registered Angus “clean-up” bulls are then turned out for those animals that may not get bred using the AI technique. Using good AI genetics, the herd’s weaning weights have steadily increased over 100 lbs. during the past three years. 600 pound weaner calves are normally available for sale in November or December.