The performance and economics of production of West African Dwarf (WAD) sheep was investigated in an experiment that lasted for 70 days. Twelve male sheep averaging 9.9 kg in liveweight and aged 7 - 9 months were randomly assigned to four treatment groups in a completely randomized design with three animals per treatment. Chemical composition of diets, intake, liveweight gain and cost implication of feeding WAD sheep with grass, a conventional concentrate, an autoclaved and biodegraded Enterolobium cyclocarpum based diet were determined. The crude protein content of Guinea grass (4.43%) was relatively low compared to that of biodegraded Enterolobium cyclocarpum (14.13%). Total consumption and liveweight change were not significantly different (P < 0.05). The growth rate of animals fed concentrates were significantly (P < 0.05) higher than those on the grass diet. Cost per Kg of feed was the highest for control and least for guinea grass diet. However, cost per unit gain was the highest for Guinea grass diet (N176.73) and least for biodegraded Enterolobium cyclocarpum diet (N72.62). It was cheaper to produce 1 kg mutton using biodegraded EC diets than control, autoclaved and guinea grass diets respectively. The results suggest that biodegrading of Enterolobium cyclocarpum improved its nutrient quality, utilization and the performance and economy of production of West African Dwarf sheep.
 Njidda, A.A. and Olatunji, E.A. (2012) Chemical Composition, Anti Nutritive Substances and in Situ Digestion Kinetics of Four Ziziphus Species Leaves Use as Fodder for Ruminants in Semi Arid Zone of Nigeria. Journal of Natural Sciences Research, 2, 79-87.
 Oni, A.O., Onwuka, C.F.I., Oduguwa, O.O., Onifade, O.S., Arigbede, O.M. and Olatunji, J.E.N. (2006) Utilization of Citrus Pulp Based Diet and Enterolobium cyclocarpum Foliage (Jacq. Griseb) by West African Dwarf Goats. Journal of Animal and Veterinary Advances, 5, 814-818.
 Ayuk, A.A., Iyayi, E.A. and Okon, B.I. (2008) Solid Substrate Fermentation of Ground Leaves of Pterocarpus santalinoides with Two Isolates of Aspergillus niger. Proceedings of the 33rd Annual Conference of the Nigerian Society of Animal Production, Olabisi Onabanjo University, March 2008, 243-245.
 Martinez Pacheco, M.M., Del Rio, R.E.N., Flores Garcia, A., Martinez Muňoz, R.E., Ron Echeverria, O.A. and Raya Gonzallez, D. (2012) Enterolobium cyclocarpum (jacq) Griseb: The Biotechnology Profile of a Tropical Tree. Blacpma, 11, 385-399.
 Koenig, K.M., Ivan, M., Teferedegne, B.T., Morgavi, D.P., Rode, L.M., Ibrahim, I.M. and Newbold, C.J. (2007) Effect of Dietary Enterolobium cyclocarpum on the Microbial Protein Flow and Nutrient Digestibility in Sheep Maintained Fauna-Free, with Total Mixed Fauna or with Entodinium caudatum Monoflora. British Journal of Nutrition, 98, 504-516.
 Raya-Gonzalez, D., Martinez Muňoz, R.E., Ron Echeverria, O.A., Flores Garcia, A., Macias-Rodriguez, L.I. and Martinez Pacheco, M.M. (2013) Dissuasive Effect of an Aqueous Extract from Enterolobium cyclocarpum (Jacq) Griseb on the Drywood Termite Incisitermes marginipennis (Isoptera: Kalotermitidae) (Latrelle). Emirate Journal of Food and Agriculture, 25, 524-530.
 Motarjemi, Y. (2002) Impact of Small Scale Fermentation Technology on Food Safety in Developing Countries. International Journal of Food Microbiology, 75, 213-229.
 Ramirez-Bribiesca, J.E., Wang, Y., Lin, L., Canam, T., Town, J.R., Tsang, A., Dumonceaux, T.J. and McAllister, T.A. (2011) Chemical Characterisation and in Vitro Fermentation of Brassica Straw Treated with the Aerobic Fungus, Trametes versicolor. Canadian Journal of Animal Science, 91, 695-702.
 Bamikole, M.A., Ezenwa, I., Akinsoyinu, A.O., Arigbede, M.O. and Babayemi, O.J. (2000) Performance of West African Dwarf Goats Fed Guinea Grass-Veranostylo Mixture, N-Fertulized and Unfertilized Guinea Grass. Small Ruminant Research, 39, 145-152.
 Tripathi, M.K., Mishra, A.S., Mishra, A.K., Vaithiyanathan, S., Prasad, R. and Jakhmola, R.C. (2008) Selection of White-Rot Basidiomycetes for Bioconversion of Mustard (Brassica compestris) Straw under Solid-State Fermentation into Energy Substrate for Rumen Micro-Organisms. Letters in Applied Microbiology, 46, 364-370.
 Shrivastava, B., Tukur, S., Pul Khasa, Y., Gupte, A., Puniya, A.K. and Kuhad, R.Ch. (2010) White-Rot Fungal Conversion of Wheat Straw to Energy Rich Cattle Feed. Biodegradation, 22, 823-831.
 Adebiyi, B.A. and Adeneye, J.A. (2001). Effects of Albizia samen Pods Supplementation on Feed Intake and Live Weight Changes of White Fulani Calves. Nigerian Journal of Animal Production, 28, 68-71.
 Yu, H., Zhang, X., Song, L., Ke, J., Xu, C., Du, W. and Zhang, J. (2010). Evaluation of White-Rot Fungi-Assisted Alkaline/Oxidative Pretreatment of Corn Straw Undergoing Enzymatic Hydrolysis by Cellulose. Journal of Bioscience and Bioengineering, 110, 660-664.
 Nyanhongo, G.S., Gomes, J., Gubitz, G., Zvauya, R., Read, J.S. and Steiner, W. (2002) Production of Laccase by a Newly Isolated Strain of Trametes modesta. Bioresource Technology, 84, 259-263.
 Singh, P., Sulaiman, O., Hashim, R., Rupani, P.F. and Cheu, P. (2010) Biopulping of Lignocelluloses Material Using Different Fungal Species. A Review. Reviews in Environmental Science and Biotechnology, 9, 141-151.
 Mosi, A.K. and Butterworth, M.H. (1985) The Voluntary Intake and Digestibility of Combination of Cereal Crop Residues and Legume Hay for Sheep. Animal Feed Science and Technology, 12, 241-251.
 Akinusi, F.A.O. and Adeleye, I.O.A. (1998) Response of West African Dwarf Ewes to Premating Concentrate Supplementation. Proceedings of the 3rd Annual Conference of Animal Science Association of Nigeria, Ikeja, 16-17 September 1997, 126-127.