“…Not It is supposed that dietary high-SBM inclusion caused the damage of intestine morphology structure, decrease in digestion enzyme activities (Liu et al, 2019) and nutrient absorption (Buttle et al, 2001;Olli, Hjelmeland, & Krogdahl, 1994;Refstie, Storebakken, & Rorm, 1998;Storebakken et al, 1999) and eventually the poor growth performance. The supplementation of tributyrin at 0.1% and 0.2% levels in SBM-based diets significantly improved fish growth performance, resulting in comparable values to that of fish fed the FM diet (Table 3), which is consistent with findings in poultry (Antongiovanni, Buccioni, Minieri, Galigani, & Rapaccini, 2010;Antongiovanni et al, 2007) and pigs (Dong et al, 2016;Hou, Liu, Hu, & Shen, 2006). However, a significant decrease in growth the major energy source of colonocyte epical cells (Hamer et al, 2010;Wong, De, Kendall, Emam, & Jenkins, 2006), butyric acid and butyrate have been administrated to promote the proliferation and differentiation of intestine villi epical cells, which subsequently increase intestine surface area, promoting the digestion and utilization of nutrients in mammalian and aquatic animal studies (Biagi et al, 2007;Claus, Günthner, & Letzquss, 2007;Gao, Trond, Karld, Michael, & Margareth, 2011;Liu et al, 2017Liu et al, , 2019Lu et al, 2008).…”