Seventy beef cows (multibreed crosses with a dominant proportion of Limousin or Blonde d'Aquitaine genes) were assigned to 2 groups of 35 animals each. During the summer, they were grazed with offspring on two separate pastures: one fertilized with nitrogen (120 kg N/ha in the 1st season and 60 kg N/ha in the 2nd season), group F, and the other unfertilized, group E. The pastures had not been fertilized for the previous 9 years. During the winter, the cows and calves were fed according to the INRA system. Nitrogen fertilization increased pasture yield by 40% (1st season) and by 28% (2nd season). With a similar number of grazing animals, increasing the area of pasture E almost twice compared with pasture F increased the accessibility of herbage but decreased the efficiency of its utilization. The daily intake of beef cows with calves on a pasture fertilized with 120 kg N/ha was 14 kg DM, 1340 g PDI and 12 UFL. After each grazing season, the body condition score of the cows was an average of 3.5 points on pasture F and 3.0 points on pasture E. Winter feeding of the cows made it possible to achieve a body condition score of 2.7 points before grazing. The rations of young bulls and heifers during the winter period helped to achieve predicted weight gains.