Physical and mechanical properties of pellets are needed to make pellet form in storage of raw materials and energy consumption. Dairy cattle manure, sieved by a two-level mesh of 30 and 50, were used for making pellets by a hydraulic press with mold diameter of 6 mm, in three moisture levels of 15,17.5, 20, 22.5 and 25% and two pressure levels of 100 and 150 MPa. The results of the tests were analyzed by using EXCEL and MATLAB software.The results showed that the compression energy as well as friction energy of mesh 30 increased with increasing moisture content from 15 to 20% and decreased with increasing of moisture content from 20 to 25% for both pressure levels of 100 and 150 MPa. The compression energy and friction energy of the mesh 50 decreased with increasing of moisture content for both pressure levels of 100 and 150 MPa. The energy consumption of compression was found to be greater at pressure of 150 MPa than the pressure of 100 MPa. The greater amount of energy consumption was used for compression. The maximum amount of friction energy was 16.7% while the minimum was 11.23% for both pressure levels of 100 and 150 MPa.
