A seasonal residue of rice crop after harvesting, rice straw (RS), mainly serves as a conventional roughage feed for ruminants during time of low fresh grass availability (Cherdthong et al., 2014(Cherdthong et al., , 2020Wanapat et al., 2009). The RS contains relatively low protein, has high fibre content and has low digestibility (Cherdthong et al., 2020). Thus, feeding RS provides insufficient nutrients for optimum production (Wanapat et al., 2013). Therefore, other roughage sources or by-products are highly sought for substituting the conventional RS feeding.Sugarcane is one of the main industrial crops, and its residue from sugar factories, sugarcane bagasse (SB), is available in large amount (300 kg/ton of sugarcane) and at a low price (Chunhawong et al., 2018;Inácio et al., 2017). Using SB as ruminant feed might reduce waste into the environment and pollution. However, feeding