Will two head of 2 yr old bulls adequately get the job done on 50 head of hiefers? (60 days) We rotational graze and the largest pasture would be no larger than 25 acres which is wide open. Bulls are around 1500 pounds and heifers will be 800 + pounds by May 1. Thanks for your advice and sharing your experience. I have usually used yearling bulls on heifers and use more bull power in that case.