The experiment was carried out using polyethylene glycol on tannin content, organic matter digestibility and metabolizable energy content in freeze dried and shade dried Morus indica (Mulberry) and Etythrina orientalis (Mander) leaves. Total phenol, total tannin, condensed tannin and hydrolysable tannin content did not differ significantly (P>0.05) between freeze dried and shade dried Morus indica and Erythrina orientalis and the mean values were 2.4, 1.3, 0.5, 0.6 vs 1.5, 0.8, 0.2, 0.7 and 2.4, 1.2, 0.5, 0.8 vs 1.8, 0.9, 0.2, 0.7 for Morus indica and Erythrina orientalis, respectively. In contrast, in vitro gas production differed significantly (P<0.05) between freeze and shade dried and the mean values were 37.4, 44.4 vs 41.7, 46.9 and 21.4, 27.2 vs 25.6, 29.1 for Morus indica and Erythrina orientalis, respectively. Similarly, organic matter digestibility in vitro differed significantly (P<0.05) between freeze dried and shade dried and the mean values were 56.6, 63.7 vs 60.5, 64.8 and 45.3, 50.9 vs 49.5, 52.5 for Morus indica and Erythrina orientalis, respectively. However, metabolizable energy content (MJ/kgDM) was similar (P>0.05) both in freeze dried and shade dried samples of Morus indica and Etythrina orientalis.