The main objective of this research was to evaluate the biogas production from cassava fibers (Manihot esculenta Crantz) with different inocula and chemical characterization of the biodigested substrates. The treatments were distributed as follows: T . Cassava peel + water, T . Cassava + water central cylinder, T . 1 2 3 Cassava peel + central cylinder + water, T . Cassava peel + Bovine manure biodigestion inoculum, T . 4 5 Cassava central cylinder + Bovine manure biodigestion inoculum, T . Peel + cassava central cylinder + 6 Bovine manure biodigestion inoculum, T . Cassava peel + Physic nut seed cake biodigestion inoculum, T . 7 8 Cassava central cylinder + Physic nut seed cake biodigestion inoculum, T . Cassava peel + central 9 cylinder + Physic nut seed cake biodigestion inoculum, T . Cassava peel + pig manure biodigestion 10 inoculum, T . Cassava central cylinder + pig manure biodige...