Highest potential of extent of gas prodn. (mL) of feedstuffs in expt. Iwere Jikjor (183.13) in Roughage group, Broken rice (204.27) in Energy group and Stylo (145.24) in Protein group resp., and Highest potential of extent of gas prod. (mL) of feedstuffs in expt. II were Lao (177.03) in Roughage group, Sweet potato white (119.84) in Energy group and Wild banana leaves (145.24) in Fodder tree group resp.