The Effect of Heat and Fermentation Treatments of Soybean Meal on Performance, Immune System, Microbial Population, Intestinal Morphology, and PepT1 Gene Expression in Broiler Chickens.

We investigated the effects of replacing raw soybean meal (RSM) with autoclaved soybean meal (ASBM) and fermented soybean meal by Lactobacillus plantarum (FSBMLP) and Bacillus pumilus (FSBMBP) on the performance, microbial population, intestinal morphology, immune system, and PepT1 gene expression in broiler chickens. One-day-old male Ross 308 broiler chicks (n=800) were utilized in a fully randomized design featuring eight treatments and five replicates, and each replicate consisted of 20 chicks. The experimental treatments included: 1) a control group ((RSM)-based diet), 2) a basal diet + ASBM, 3) a basal diet + 2% FSBMLP, 4) basal diet + 4% FSBMLP, 5) basal diet + 6% FSBMLP, 6) basal diet + 2% FSBMBP, 7) basal diet + 4% FSBMBP, and 8) basal diet + 6% FSBMBP.