The objective of this study was to evaluate the impact of using technology to reduce the age at first calving (AFC; from 48 to 24 months) and increase the weaning rate (WR; from 60% to 80%) in beef herds. The need for pasture area (hectares) and the CO2 equivalent emissions (CO2eq.) of animals present in the production system were analyzed. Data from a livestock breeding system were used to produce 400 male cal...