Conselho Nacional de Desenvolvimento Científico e Tecnológico; The productive and reproductive performance of beef heifers grazing Italian ryegrass (Lolium multiflorum Lam) were studied with animals exclusively on pasture or receiving 0.8% of body weight of rice bran plus monensin or not. The rice bran was given daily at 2 pm and the monensin was provided in the amount of 200mg per animal. The grazing method wa...