The evaluation of nutritive content of palm oil frond, ammoniated and fermented using effective microorganism (em4) by hariswan sujana abstract oil palm frond (opf) is one of potential sources as alternative feed, but it has limited use by high crude fiber and low crude protein contents. the improvement of nutritional quality of opf can be done by ammoniation and fermentation technologies using effective microorganism (em4). this research is intended to evaluate nutritive value of opf, processed by ammoniation and fermentation using urea and em4. this experiment was conducted at animal nutrition laboratory, animal husbandry department, agricultural faculty, syiah kuala, darussalam banda aceh, from 20 february to 22 april 2014. materials used in this experiment were oil palm frond (pfo), urea, and effective microorganisme (em4). this experiment was conducted by using completely factorial randomized design (cfdr) 3x2 with 3 urea dosages (a1;3% urea, a2;4% urea, a3;5% urea)