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This study aimed to evaluate the productive parameters of pearl millet (Pennisetum glaucum (L.) R. BR) and Sudan grass (Sorghum bicolor cv. Sudanense) pastures, under continuous grazing by cows destined to slaughter. We used 22 crossbred Charolais and Nellore cows, kept under continuous grazing on Sudan grass or pearl millet pastures, over 63 experimental days, divided into three periods (21 days each). The experimental design was completely randomized with two treatments and three periods, with five replicates (area). The productive parameters of the pastures were similar when treatments were compared (P < 0.05). The growing cycle of pastures did not affect forage mass (1617.47 and 1606.93 kg of dry matter (DM)/ha) and forage offer (9.42 and 8.29 kg of DM/100 kg BW) on pearl millet or Sudan grass pastures. However, the average rate of accumulation of dry matter and crude protein showed higher values ​​on the first 21 days of pasture use (130.77 kg DM/ha and 17.04 g/kg DM), followed by reductions in the last two periods, and the averages of the second period (65.53 kg DM/ha and 12.96 g/kg DM) were higher than those of the third experimental period (36.13 kg DM/ha and 10.01 g/kg DM). The values ​​for neutral detergent fiber were similar in the two earlier periods (48.81, 49.01g/kg DM), followed by an increase in the last 21 days of pasture use (56.54 g/kg DM). The stocking rate in kg/ha of BW showed an interaction between treatment and period, however, the mean values ​​were similar between treatments (1741.1 kg/ha of the BW for pearl millet and 1881.7 kg/ha of BW for Sudan grass). The average daily live weight gain did not differ between treatments (1.04 for pearl millet and 0.96 for Sudan). The average daily gain per area (4.18, 4.55 kg/ha of BW) was similar on the first 42 days of pasture use and higher than on the last 21 experimental days (2.39 kg / ha of BW). Pearl millet or Sudan grass pastures are equivalent with respect to the production characteristics under continuous grazing by culling cows

Características produtivas de pastagens de milheto ou capim sudão submetidas ao pastejo contínuo de vacas para abate