nylon 52 biological treatments to disrupt the lingo-cellulose complex (Balgees et al. 2007; Okano et al. on ru 53 2006). Balgees et al. (2015) revealed that urea-treated sB increased nutritive value in terms 54 of protein content and ruminal digestibility. These could be due to the effect of enzyme 55 urease release ammonia from urea and the effect of ammonia on the cell wall of bagasse. In 56 addition, Ahmed et al. (2013) revealed that urea treated SB could reduce fibre content and 57 increased fibre degradation by in situ study. Moreover, alkali treatments is potential chemical treatments for improving quality of 58 59 roughages: thus a reduction of treatment cost was obtained. The concentration of alkaline 60 agents can chemically break the ester bonds between lignin and hemicellulose and cellulose, 61 and physically make structural fibres swollen (Wanapat et al. 2009) which enable rumen 62 microbes to attack the structural carbohydrates more easily (Castanon-Rodriguez et al. 2015). BST 63 Moreover, Carvalho et al. (2013) reported that feeding alkali treated SB increased feed intake loca 64 and body weight (BW) of ruminant However there are still a limitation data on the we