Asian Journal of Animal Sciences1819-1878xxxx-xxxxxAsian Network for Scientific Information10.3923/ajas.2007.18.25HalderG. MondalS. PaulS.K. RoyB. SamantaG. 1200711An experiment was conducted to find out the effect of arsenic with or without excess supplementation of methionine and methionine-betaine combination on performance of layer chicken. Sixteen week old pullets (n = 120) of Rhode Island Red (RIR) were randomly assigned into four dietary treatments replicated three times with 10 birds/replicate. The groups were control (C)-provided basal diet to meet all the nutrients requirement, T1-birds were offered basal diet and 5.5 ppm arsenic (As) through water, T2-birds were offered control diet with 50 g methionine per 100 kg of feed and 5.5 ppmAs through water and in T3- 25 g methionine + 25 g betaine per 100 kg of control feed and 5.5 ppmAs through water were provided. The birds were maintained replicate wise in deep litter system of housing with a common system of management. Final body weight and body weight gain was significantly (p<0.01) varied among the groups. Reduced feed intake was noticed in arsenic treated groups. Egg production and egg weight were significantly (p<0.01) decreased in arsenic treated groups than control. The first laying age were differed significantly (p<0.01) among the experimental groups.]]>Abdo, K.M., M.R. Elwell, C.A. Montogomery, M.B. Thompson, R.B. Thompson and J.D. Prejean,1989455556Aguilar, M.V., M.C. Martinez-Para and M.J. Gonzalez,199741189195AOAC,197512th Edn.,pp: 960-962pp: 960-962AOAC.,199516th Edn.,Baker, G.W. and J.R. Duncan,198370333336Banerjee, A., B.K. Roy, R.K. Sinha, I. Chakravarty, A. Mazumder and K.J. Nath,20002000pp: 314320BIS,19921992Chen, K.L. and P.W.S. Chiou,2001104306416Chesters, J.K.,19971997Chiou, W.J., K. Chen, B. Yu, W.S.P. Chiou, K.L. Chen and B. Yu,199674229236Currey, N.A., W.I. Benko, B.T. Yaru and R. Kabi,1992Lates calcarifer) flesh from lake Murray, Papua New guinea.]]>125305320Donoghue, D.J., H. Hairton, C.V. Cope, M.J. Bartholomew and D.D. Wagner,199457218223Droke, E.A., J.W. Spears, J.D. Amstrong, E.B. Kegley and R. Simpson,19931231319Duncan, D.B.,195511142Gentle, M.J., W.A. Dewar and P.A.L. Wight,198123265273Golden, M.H. and D. Ramdath,1987465368Henkin, R.I.,19771977pp: 190-198pp: 190-198Holeman, A. and V. Stibilij,199732407410Littledike, E.T. and J.P. Golf,19877017271743Kerr, K.B., J.W. Cavett and O.L. Thompson,19635507525Prikhod`ko, G.,199821618Sardar, P.,2005Cyprinus carpio L.) and its remedial measures through nutritional manipulation.]]>2005Savabieasfahani, M., R.L. Lochmiller, D.P. Rafferty and J.A. Sinclair,1998Sigmodon hispidus) to the immunotoxic effects of low level arsenic exposure.]]>34289296SPSS,1997Stanley, T.R., J.W. Spann, G.J. Smith and R. Rosscoe,199426444451Taylor, T.G., T.R. Morris and F. Hertelendy,196174123125Thompson, L.J., J.O. Hall and G.L. Meerdink,19917277306Thompson, D.,19938889114Trudeau, D.K. and E.F. Freier,196713101101Uthus, E.O.,2001144355Vaheter, M. and E. Marafante,1987374146Vodela, J.K., J.A. Renden, S.D. Lenz, W.H. McElhenney and B.W. Kemppainen,19977614931500Clarke, E.G.C. and M.L. Clarke,19751st Edn.,Whitehead, C.C.,1995344048WHO, 19963rd Edn.,Wiebe, J.P. and K.J. Barr,198836451610Ye, C.L., S.F. Cao and X. Chen,19919222.226Yi, Z., E.T. Kornegay and D.M. Denbow,199675540546Zhu, Y., A. Suo, Y.Q. Zhu and P. Suo,199829121127