RT - Journal Article T1 - Effect of Supplemental Phytase on Metabolizable Energy and Nutrients Digestibility of Sorghum, Corn and Wheat JF - JSTNAR YR - 2006 JO - JSTNAR VO - 9 IS - 4 UR - http://jstnar.iut.ac.ir/article-1-512-en.html SP - 191 EP - 200 K1 - Phytase K1 - Apparent and true digestibility K1 - Metabolizable energy K1 - Sorghum K1 - Corn K1 - Wheat. AB - In a completely randomized design with 3×5 factorial arrangement, the metabolizable energy and nutrients digestibility of three varieties of sorghum grains (low, medium and high tannin) with and without supplemental phytase were determined and was compared with corn and wheat. Three varieties of sorghum were selected from the 36 varieties according to their tannin content and were grown togther with corn and wheat under the same environmental conditions. Supplemental phytase was added at three levels (0.0, 500 and 1000 FTU/kg) to each grain. The metabolizable energy (ME) and nutrients digestibilities were determined by the mature male Leghorn with the method of Sibbald. The results indicated that different grains had different ME, apparent and true digestibilities regarding dry matter, nitrogen and phosphorus. Medium tannin sorghum had the highest apparent and true metabolizable (AME and TME) energy, whereas the high tannin sorghum showed the lowest AME and TME. The apparent and true dry matter digestibilities of corn was more than the other grains (P LA eng UL http://jstnar.iut.ac.ir/article-1-512-en.html M3 ER -