2020-10-01 GRASSLAND SCIENCE 2020 66(卷), 4(期), (277-284页)
Urochloa hybrids produce large amounts of biomass and have drought tolerance; however, there are few reports on the forage yield and quality of these forage grasses in semi-arid environments. We evaluated the forage yield and nutritional value of Urochloa hybrids ('Mulato II', 'Cayman' and 'Cobra') and Pennisetum ciliare 'H-17' (control) at three regrowth ages (RA: 4, 6 and 8 weeks), at maximum (MAR) and minimum (MIR) rainfall periods in semi-arid climate. The variables evaluated were as follows: dry matter of leaves (DMl), stems (DMs), and total (DMT), crude protein (CP), in vitro dry matter digestibility (IVDMD) and detergent fibers (neutral: NDF, and acid: ADF). The hybrids showed higher DMl, CP and IVDMD with values of 423 g/m(2), 11% and 70%, respectively. 'H-17' presented higher DMs, NDF and ADF, with values of 110 g/m(2), 69% and 35%, respectively. Urochloa hybrids showed higher forage yield and nutritional value compared to Pennisetum ciliare 'H-17' and could be an alternative for semi-arid zones.