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Ciência Rural 2004
Desempenho de pastagem nativa e pastagem sobre-semeada com forrageiras hibernais com e sem glifosatoDOI: 10.1590/S0103-84782004000600039 Keywords: average daily gain, gain per area, native pasture, sodseeding, herbicide. Abstract: the experiment was developed in bagé-rs, brazil, to evaluate the dry matter production (dm), stocking rate (kg lw ha-1), live weight gain per animal (adg, kg head-1 day-1) and gain per area (gpa, kg lw ha-1) in: t1-native pasture (control); t2-native pasture sodseeded with italian ryegrass (lolium multiflorum), white clover (trifolium repens) and birdsfoot trefoil (lotus corniculatus); t3-similar to anterior, plus glyphosate spraying; t4-similar to anterior, but with double fertilization. it were utilized braford steers. the grazing method was the continuous stocking, with stocking adjustments to maintain a level of forage on offer of 10% (10kg of dm 100kg lw-1 day-1). to determine the dm of pasture, it was utilized the double sample method with a disc meter and the cage method for the pasture accumulation rate. the experimental design was a complete randomized blocks, with two blocks and four treatments. the introduction of cool season species in native pasture, with or without glyphosate spraying, contributes to increase native pasture productivity. over-seeding cool season species allowed a higher stocking rate and animal production per animal and per area as compared to natural pasture.
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