LAUSR

Abstract To improve the efficiency of nutrient utilization in defatted rice bran (DRB) used as animal feed ingredient, the effects of enzyme supplementation and extruding process on the coefficient of apparent ileal digestibility (CAID) and apparent total tract digestibility (CATTD) of nutrients and nutraceutical phenolic acids were evaluated using growing pigs (initial body weight = 18 ± 1.2 Kg) permanently fitted with ileal T-cannula. The extruded DRB ingredient (EDRB) was prepared by extruding the DRB ingredient at 130–135 °C using a single-screw extruder. The enzyme preparation contained cellulase, xylanase, phytase, and ferulic acid esterase. Eight cannulated pigs were allocated according to a 4 × 4 double Latin square arrangement. In each period, 1 of 4 tested diets, i.e., DRB basal diet, EDRB basal diet, and their enzyme added counterparts were randomly distributed to 2 pigs (1 pig form each square). The feces were sampled on the 6th and 7th day, and the ileal digesta were collected on the 8th, 9th and 10th day in each period. The results shown that pigs fed EDRB containing diets exhibited higher CAID values of dry matter (DM), organic matter (OM), gross energy (GE), and ether extract (EE) (P