Sydney O'Daniel, Nebraska Exension Beef EducatorRick Funston, Nebraska Extension Beef Cattle Reproductive Physiologist Managing cows and heifers to be on a positive plane of nutrition at the time of breeding is essential for the establishment of pregnancy. Photo credit Troy Walz. As we approach the breeding season, cows and heifers are faced with a variety of stressors from the metabolic pressure of providing for a calf to changes in environment. Stress during early…