Nutritional value of feed ingredients is crucial as a base for the development of feed formulation. Organic livestock production is lack of this information. To increase knowledge of organically produced feed materials, the present trial was conducted to compare nutritive values and amino acid profiles of organic (O) and conventional (C) feed ingredients. These consisted of corn (OC, CC), full fat soybean (OFFSB, CFFSB), rice bran (ORB, CRB), broken rice (OBR, CBR) and Leucaena (OL, CL). The findings indicated that OC had crude protein (CP) ether extract (EE) crude fiber (CF) gross energy (GE) phosphorus (P) and calcium (Ca) similar to a reference range of CC. The CP of OFFSB and CFFSE ranged from 38 - 39%. Two sources of rice bran and Leucaena had variation of nutrient composition, especially CP and CF. OL had higher CP than CL (5.18%), but no significant difference was found (P>0.05). Likewise, there was no difference between ORB and CRB (P>0.05). The similar amino acid was indicated in this study, whereas methionine and lysine were relatively low. These findings provide useful information for developing organic feed formulation