Comparison the effects of raw and fermented sesame meal by solid state fermentation on performance, cacass characteristic, and intestinal morphology in broiler chickens

The use of sesame meal in poultry feed is limited due to the anti-nutritional factor of phytic acid and the lack of secretion of the phytase enzyme in the gastrointestinal tract. For this purpose, enzyme supplements or phytase-producing microorganisms can be used to break down phytate. The purpose of this experiment was comparing the effects of raw and processed sesame meal by solid-state fermentation on performance, carcass characteristic, and intestinal morphology in broiler chickens. sesame meal was fermented with a liquid mixed culture containing Lactobacillus plantarum in a ratio of 1:1.2. After 25-day fermentation, phytic acid was reduced from 17.39 to 5.26 mmol/g. A total of 315 Ross-308 broilers in a completely randomized design were allocated to 7 treatments with 3 replicates. Experimental treatments were containing 25, 50 and 75% raw or/and fermented sesame meal replaced by soybean meal in diets. The results show that levels of 25 and 50% fermented sesame meal compared with raw sesame meal improved broilers performance (P<0.05). Abdominal fat was significantly lower in treatments of 50% and 75% fermented sesame meal compared to other treatments (P<0.05). Villi in the duodenum and jejunum of the birds fed on diets containing 25 and 50% fermented sesame meal were significantly higher than for the other experimental groups (P<0.05). Considering the similarity of the results of control treatments and 50% fermented sesame meal in weight gain and feed conversion ratio, the use of fermented sesame meal is suggested up to 50% replacement level with soybean meal in the diet.