Determination of chemical composition and AMEn of different Iranian wheat cultivars before and after processing in broilers

In order to determine chemical composition and apparent metabolizable energy corrected for nitrogen (AMEn) of 16 Iranian wheat cultivars before and after fermentation, 2 experiments were conducted. In first experiment, 330 mixed sex broilers (7-10 days) and in second experiment, 198 mixed sex broilers (21-24 days) were used. The AMEn content of samples was evaluated by excreta collection method using chromic oxide as marker at 10 and 24 days old. The average improvement rate of chemical composition of 16 wheat varieties before and after fermentation for dry matter, crude protein, crude fiber, acid detergent fiber, neutral detergent fiber, starch, total non-starch polysaccharides (NSP), soluble NSP, insoluble NSP, ether extract, ash, non-fiber carbohydrate and nitrogen-free extract were .48, .61, .79, .09, -5.10, -12.97, -2.50, -0.38, -2.12, -0.41, .79, .11 and .73 percent respectively. The AMEn for wheat cultivars before fermentation at 10 and 24 days old was 2560 and 2944 kcal/kg and these values for wheat cultivars after fermentation was 2770 and 3141 kcal/kg. The AMEn was affected significantly by fermentation and also by age of broilers (P