The objective ofthis work was to evaluate the influence of species intercropped with ryegrasson the botanical and structural composition and the nutritional values of pasturesin an agroecological transition system. It was evaluated ryegrass (Loliummultiflorum Lam.) intercropped with black oats (Avena strigosa Schreb.),white clover (Trifolium repens L.) and forage peanut (Arachis pintoiKrapov. & Gregory). It was used a complete random design with three treatmentsand three repetitions. The first grazing was done 21 days after emergence ofthe plants on the pastures with ryegrass and black oats and ryegrass and foragepeanuts and 28 days after emergence on the pasture of ryegrass + white clover.The second grazing, on the pasture with ryegras + black oats, occurred 30 daysafter the first one, whereas on the other pastures, grazing occurred 37 dayslater. The rates of dry matter (DM) accumulation, from the beginning of periodof exclusion until maximal production of dry matter were: 77.7; 75.0 and 71.3kg/ha/day of DM for the pastures intercropped with white clover, forage peanutand black cover, respectively. Leaf/culm ratio until second grazing, was highon all pastures. Reduction on contents of crude protein according to exclusiondays on ryegrass + black oat pasture is lower than on pastures of ryegrass intercroppedwith white clover or forage peanut.
