Document Type : Research Paper
Former M.Sc. Student, Faculty of Agriculture, University of Guilan, Rasht, Iran
Professor, Faculty of Agriculture, University of Guilan, Rasht, Iran
Assistant Professor, International Sturgeon Research Institute, Rasht, Iran
Associate Professor, Faculty of Agriculture, University of Guilan, Rasht, Iran
This study was performed to compare ordinary wheat with fermented wheat using Bacillus subtilis & Lactobacillus plantarum, and the effect of replacing different levels of fermented wheat with corn grain on performance, carcass quality and jejunom morphology in broilers. A total of 280 broilers (Ross 308) in a completely randomized design wre assigned to 7 experimental groups with 4 replicates . The experimental diets included: control diet based on corn and soybean meal and six other diets containing 20%, 30% and 40% raw wheat grain instead of corn (W40 & W20, W30) or 20%, 30% and 40% fermented wheat instead of corn (FW30 and FW40, FW20). The results showed that fermented wheat grain at the level of 40% caused a significant increase in daily weight in the starter and growth periods (P<0.05). The fermentation process led to a decrease in phytic acid and an increase in the calcium and phosphorus numerically. Villi length in the FW40 treatment was significantly increased compared to that in the control treatment (P<0.05). Breast muscle in the FW40 treatment showed a significant increase (P<0.05), when compared to treatments FW30, W40, and control. In conclusion, the use of 40% of fermented wheat grains improves the feed conversion ratio and increases the percentage of breast muscle meat.