The objective of this work was to evaluate the sward structure of Brachiaria brizantha cultivar Marandu pastures in response to leaf blade allowance. The forage grass was sown in January 2001, at Embrapa Agropecuária Oeste, Dourados, MS, Brazil and the allowances were 4, 8, 12 and 16% (kilograms of leaf blade per 100 kg of live weight per day). The experimental design was complete randomized blocks, with two replicates. The pasture was monthly evaluated during from October 2002 to May 2003, October 2003 to June 2004 and November of 2004 to June of 2005. The allowances were kept constant with put-and-take animals and continuous stocking grazing. The leaf blade mass and sward height increased linearly as a function of leaf blade allowance. The leaf blade accumulation rate and the root dry matter did not respond to the increase of allowance. The leaf blade mass and sward height vary with leaf blade allowance.
Brachiaria brizantha; sward height; root dry matter; leaf dry mass; accumulation rate
