fructo-oligosaccharides, an increase in villus height and crypt depth ratio in the distal small intestine was observed in pigs. The increased villus height and crypt depth ratio is favorable for nutrient absorption, and the increased absorptive capacity of the intestinal tract results in improved feed efficiency and faster growth (Shim, 2005). Additionally, several studies have reported that fructooligosaccharides have beneficial effects on young pigs, improving their growth performance and intestinal health