Journal of Fisheries and Aquatic Science1816-49271996-0751Academic Journals Inc.10.3923/jfas.2016.238.243Oreochromis niloticus]]>AjaniE.K. OrisasonaO. OmitoyinB.O. OshoE.F. 32016113The high cost and competing demand for fish meal in fish diet has made the search for alternative ingredient very expedient. A 12 week feeding trial was conducted with Oreochromis niloticus to determine the effect of replacing fishmeal with soyabean meal and methionine on growth, nutrient utilization, haematology and plasma biochemistry. Four experimental diets (40% crude protein) were formulated, with Partial Soybean Meal (PSM) inclusion, No Soyabean Meal (NSM), Only Soybean Meal (OSM) and soybean meal and methionine. For 84 days, fish were fed at 3% body weight daily to triplicate groups of 15 fish (25.08 g±0.04 g fish1) that were randomly allocated to twelve hapa suspended in 20 m2 earthen pond. Results showed that Mean Weight Gain (MWG) and increase in length were significantly high (p<0.05) in PSM (22.77 g and 16.90 cm, respectively) and least in NSM (17.54 g and 14.63 cm, respectively). Specific Growth Rate (SGR) values were high in PSM (1.62) and OSM+M (1.55) and least in NSM (1.48). Fish fed OSM+M had the highest Parked Cell Volume (PCV, 20.66%), haemoglobin (Hb, 7.87 g dL1) and least White Blood Cells (WBC, 3.12x104 mm3), while NSM gave the least Hb (5.37 g dL1) and highest WBC (3.92x104 mm3). Serum enzymes AST (68.0 U L1) and ALT (46.66 U L1) were high in OSM+M and least in PSM (47.66 and 28.64 U L1, respectively). The present study revealed that soybean meal can either be used to partially replace fishmeal or completely replace it with methionine supplementation, when growth, nutrient utilization and health status of O. niloticus are considered.]]>AOAC.,200518th Edn.,pp: 25-50pp: 25-50Abdelghany, A.E.,2003Oreochromis niloticus x O. mossambicus, grown in concrete tanks.]]>146987Akintayo, I.A., S.O. Obasa, W.O. Alegbeleyo and A.N. Bangbose,2008Helianthus annus) seed meal in the diets of African catfish (Clarias gariepinus) fingerling.]]>202846Al-Kenawy, D., G. El-Nagar and Y.A.Z. Mohamed,20082008pp: 773785Ayoola, S.O.,2011Clarias gariepinus.]]>8291299Ayoola, S.O.,2010Pages: 180Pages: 180Borgeson, T.L., V.J. Racz, D.C. Wilkie, L.J. White and M.D. Drew,2006Oreochromis niloticus).]]>12141149Chou, R.L., B.Y. Her, M.S. Su, G. Hwang, Y.H. Wu and H.Y. Chen,2004Rachycentron canadum.]]>229325333Coyle, S.D., G.J. Mengel, J.H. Tidwell and C.D. Webster,2004Oreochromis niloticus x Oreochromis aureus, fed diets containing different protein sources in combination with distillers dried grains with solubles.]]>35365370Davis, D.L., C.L. Miller and R.P. Phelps,2005Lutjanus campechanus.]]>36114119El-Sayed, A.F.M.,2006Pages: 277Pages: 277El-Saidy, D.M.S.D. and M.M.A. Gaber,2003Oreochromis niloticus (L.) diets.]]>3411191127Fagbenro, O.A., T. Jegede and O.S. Fasasi,2010154955Furuya, W.M., L.E. Pezzato, M.M. Barros, A.C. Pezzato, V.R.B. Furuya and E.C. Miranda,2004Oreochromis niloticus L.).]]>3511101116Hansen, A.C., G. Rosenlund, O. Karlsen, W. Koppe and G.I. Hemrea,2007Gadus morhua L.): Effects on growth and protein retention.]]>272599611Joshi, P.K., M. Bose and D. Harish,2002Clarias batrachus exposed to mercuric chloride.]]>12119122Koumi, A.R., B.C. Atse and L.P. Koume,200889197Mambrini, M. and S.J. Kaushik,199511240247Murai, T., H. Ogata, P. Kosutarak and S. Arai,198656197206Nyirenda, M., E. Mwabumba, E. Kaunda and J. Sales,2000Oreochromis karongae (Trewavas 1941).]]>231315Ologhobo, A.D.,1992293104Olvera-Novoa, M.A., G.S. Campos, M.G. Sabido and C.A.M. Palacios,1990Oreochromis mossambicus).]]>90291302Ranzani-Paiva, M.J.T., A.T. Silva-Souza, G.C. Pavanelli and R.M. Takemoto,2000Schizodon borellii (Osteichthyes, Anostomidae) and Prochilodus lineatus (Osteichthyes, Prochilodontidae) from Parana river, Porto Rico region, Parana, Brazil.]]>22515521Shiau, S.Y., J.L. Chunag and C.L. Sun,1987Oreochromis niloticus x O. aureus) diets at two protein levels.]]>65251261Shiau, S.Y., C.C. Kwok, J.Y. Hwang, C.M. Chen and S.L. Lee,1989Oreochromis niloticus x O. aureus) fingerling diets at a suboptimal protein level.]]>20230235Shiau, S., S. Lin, S. Yu, A. Lin and C. Kwok,1990Oreochromis niloticus H O. aureus) diets at low protein level.]]>86401407Siddhuraju, P. and K. Becker,2003Mucuna pruriens (L.) DC. var. utilis (Wall ex Wight) Baker ex Burck] on growth performance, feed utilization and body composition in Nile tilapia (Oreochromis niloticus L.).]]>34487500Storebakken, T., S. Refstie and B. Ruyter,20002000pp: 127-170pp: 127-170Wu, G.S., Y.M. Chung, W.Y. Lin, S.Y. Chen and C.H. Huang,2004Oreochromis niloticus x O. aureus).]]>30291297El-Saidy, D.M.S.D. and M.M.A. Gaber,2002Oreochromis niloticus (L.) fingerlings.]]>33297306