1. AOAC., 1990. Official method of analysis. 15th ed., pp.66-88. Association of Official Analytical Chemists, Washington, DC, USA.
2. Bakshi, M.P.S., Wadhwa, M., 2004. Evaluation of forest tree leaves of semi-hilly arid region as livestock feed. Asian-Australasian Journal of Animal Sciences, 17(6): 777-783.
3. Barry, T.N., Duncan, S.J., 1984.The role of condensed tannins in the nutritional value of Lotus pedunculatus for sheep. I. Voluntary intake. British Journal of Nutrition, 65:496-497.
4. Blümmel, M., Makkar, H.P.S., Chisanga, G., Mtimuni, J., Becker, K., 1997a. The prediction of dry matter intake of temperate and tropical roughages from in vitro digestibility/gas-production data, and the dry matter intake and in vitro digestibility of African roughages in relation to ruminant liveweight gain. Animal Feed Science and Technology, 69(1-3): 131-141.
5. Blümmel, M., Mgomezulu, R., Chen, X. B., Makkar H.P.S., Becker K., Orskov E.R. 1999b. The modification of in in vitro gas production test to detect roughage related differences in in vivo microbial protein synthesis as estimated by the excretion of purine derivates. Journal of Agricultural Science (Camb.), 133: 335–340.