It was evaluated the forage production from black oat (Avena strigosa Schreb) plus italian ryegrass (Lolium multiflorum Lam) mixture under grazing with beef heifers of Charolais breed and their crosses with Nellore submitted to following treatments: 0, 0.7, and 1.4% live weight/day of supplementation of rice bran plus citrus pulp (1:1). Daily dry matter accumulation rate (TA), botanical composition, forage losses and economic return of the different levels of supplementation were evaluated. The treatments with supplementation increased TA, however, the supplement level of 1,4% did not differ from the 0% level. Forage mass losses represented 2.61, 1.91, and 1.41% of the live weight/day for 0, 0.7, and 1.4% supplementation levels, respectively. The total costs (C) were 289.49, 477.17, and 749.49 R$/ha. The gross incomes (GI) were of 551.46, 723.29, and 872.56 R$/ha. The net incomes were 261.49, 255.15, and 122.62 R$/ha. The GI/C ratio were 1.90, 1.54, and 1.16 for the treatments 0, 0.7 and 1.4% LW/day, respectively.
rice bran; continuous grazing; forage losses; botanical composition; citric pulp; gross income
