Resumo

OLIVEIRA, T.S. et al. Chemical composition of sugarcane bagasse ammoniated with different levels of urea and whole soybean. Arch. zootec. [online]. 2011, vol.60, n.231, pp.625-635. ISSN 1885-4494.  https://dx.doi.org/10.4321/S0004-05922011000300051.

The objective of this work was to evaluate the effect of the different levels of urea and ground whole soybean as a urease source on the chemical composition of the ammoniated sugarcane bagasse. Four levels of urea (2%, 4%, 6% e 8% DM) and three levels of ground whole soybean (0%; 2% e 4%, DM) were added to sugarcane bagasse stored during 52 days in plastic bags (50 L). We analyzed the levels of DM, CP, NDF, ADF, cellulose, hemicellulose and lignin. Was used a complete randomized design with three replicates for treatments. The gradual increase of the urea levels in the process of amonização of sugarcane bagasse implied in reduction of NDF, ADF, cellulose, hemicellulose and lignin, and increase of CP. However, the levels of DM were not affected by different levals of urea and whole soybean used in different treatments, differing only in the DM ofin nature sugarcane bagasse. The use of ground whole soybean, as source of urease, in the amonização of sugarcane bagasse, was efficient in the reduction of the levels of NDF only for the levels of 2 and 4% of urea.

Palavras-chave : Cellulose; Neutral detergent fiber; Hemicellulose.

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