I try to manage my butchers so they will be on full feed at least 120 days. normally the calves are avg. 600 lbs at weaning, and i try to make them gain about 2.5 lbs/day for 90 days or so. after a couple weeks transition get them to full feed where the calves usually avg. 3.5-4.0 lbs/day gain. After 120 days on full feed, the calves will be avg. 14.3 months of age, steers will weigh between 1250 and 1300 lbs, heifers between 1100 and 1225 lbs. Generally, by this time the top heifers and steers will be ready to butcher (maybe a couple weeks past ready). To be finished- they have to look finished. The remaining calves will finish out up to a few weeks later- which works out well with scheduling butchering services, and filling customer orders.
To determine finish on your calf should be rather easy since it is an angus. The brisket will be full, area each side of the tail-head will show fat pockets, the topline (although not very wide on an angus :lol: ) will be flat-topped, sides of the calf along the hind quarter and rib area will be dimpled and slab-sided, and if it is a steer-the bag will normally look fat.
what works for me might seem like nonsense :shock: to others, but i hope it helps you out.
ROB