Determination of nutritive value and anti-nutritive content of Elite hulless barley

The aim of this study was to compare the nutritive value and anti-nutritional factors (¥â-glucan (©¬G), resistant starch, dietary fiber) of 20 elite lines of hull-less barley. The content of gross energy and chemical compositions such as crude protein, crude fat, ash, crude fiber, sugar and starch, were measured. The results showed that there were significant differences in chemical compositions (gross energy, crude protein, ash, starch, sugar) between different lines produced in 1381. The line Birjand had the highest gross energy (4/35 kcal/g), crude protein (16/65%) crude fat (18/6), sugar (4/92%), starch (67/87), but the content of crude fiber of this line was the lowest (1/4%) among all lines. Total ©¬G content for Darab line was the lowest and for Kerman line was the highest. The soluble ©¬G content was found in the range of 0.83-1.27 percent among all lines and the highest belonged to line Karj and the lowest to the lines of Birjand and Yazd. Total NSP content of the lines was from 11.08-17.8% and the lines of Yazd and Birjand had the highest content of NSP. The results from hull-less barley lines produced in 1383 showed that there were significant differences in content of gross energy, crude protein, ash, sugar, starch and soluble and insoluble ©¬-glucan. However, the highest GE, crude protein and starch belonged to lines Moghan and Birjand respectively. Data showed that there were significant differences in soluble ©¬-glucan and total, soluble and insoluble fiber of hull-less barley lines produced in 1383. In addition, it was found that the highest content of soluble ©¬-glucan was from line Moghan. Comparing hull-less lines produced during 1381 to 1383 revealed that there were significant differences in crude protein, ash, starch and sugar. Comparing the products of these two years made it clear that the amount of crud protein and sugar in the first year was higher and the amount of crud fiber and ash was less than the second year. However, the content of soluble ©¬-glucan produced in 1381 was less as compared to 1383. According to the results, the line Yazd had better nutritive value and the least NSP content among other lines. Therefore, lines Karaj, Darab, Isfehan, Birjand and Yazd were more suitable ones for different climates in Iran. Effects of NSP content of hull-less barley lines on metabolisable energy and viscosity of 20 the lines accomplished using adult cockerel. The result showed that the DM content varied from %94 to % 98.5, crude protein % 10/9 to % 17.6, gross energy 3928.6 to 4382/5 kcal/kg, NDF %12 to %18/2, crude fiber %1/2 to % 3/4 and ©¬-glucan % 3/76 to % 6/19. The studied lines had a significant difference in viscosity (p0.05). Treatments 20 and 6 showed respectively minimum and maximum feed viscosity and treatments 4 and 1 had respectively the maximum and minimum fecal viscosity. The survey showed that there were significant discrepancies between the quantity of hull-less barley in metabolisable energy (AME, AMEn, TME and TMEn) (P0/05). Treatment 2 had the minimum (2481/5, 2481/5, 2613/5, 2613/4 kcal/kg) and treatment 15 had the maximum quantity (3341/2, 3341/2, 3441/1, 3441 kcal/kg) of metabolisable energy. It was also shown in this study that the intact cockerels showed more metabolisable energy and less faces viscosity than the caecectomized ones for hull-less barley. Results showed that the viscosity of feed and faces in wheat grain was less as compared to barley grain. The metabilisable energy of wheat was bigger compared to hull-less barley