Pakistan Journal of Biological Sciences1028-88801812-5735Asian Network for Scientific Information10.3923/pjbs.2003.849.853AliMuhammad RamzanAhmedIftikhar AhmedMaqbool SaharLubna 9200369An experiment was conducted in earthen ponds to observe the effect of varying levels of supplementary feed on the growth performance of Indian major carps and to evaluate the optimum feeding level for these species. Although the total fish production increased with increasing feeding levels, yet statistically there was an increase in weight gain up to 6% of feeding rate, but the difference between 6 and 8% feeding level was non significant. Feed to weight gain ratios (FCR) showed increasing trends, while feed conversion efficiency (FCE) decreased with increase in feeding levels. There was a highly positive correlation between feed added and weight gain in all treatments. Specific growth rate was maximum in Cirrhinus mrigala followed by Labeo rohita and Catla catla. Net profit was maximum at 6% feed supplementation.]]>Akram, M., I. Ahmed and I.M. Janjua,1994Catla catla under different levels of supplementary feeding in fertilized ponds.]]>31355357Balogu, D.O., H.F. Phillips, A. Gannam, O.A. Porter and J. Handcock,1993421011Cui, Y.B., S. Chen, S. Wanq, S.L. Chen and S.M. Wanq,1996Ctenopharyngodon idella).]]>20172177De Silva, S.S. and R.M. Gunasekera,199192237241 Devaraj, K.V., G.Y. Keshavappa and J.K. Manissery,1986Ctenopharyngodon idella (val.) fed on two terrestrial fodder plants.]]>17123128Ghosh, S.K., B.K. Mandal and D.N. Barthapur,19844097101Hasan, M.A. and A.K. Jafri,1994Clarias batrachus (L.), a cultivable catfish species.]]>25427438Janjua, I.M.,1996Labeo rohita.]]>1996Javed, M., M. Hassan and K. Javed,199330712Khan, M.A. and A.K. Jafri,1991Catla catla.]]>67987Mahboob, S., A.N. Sheri and M. Javeed,199727349351Mazur, C.F., D. Tillapaugh, J.R. Brett, G.K. Iwama,1993Oncorhynchus ishawyscha) reared in salt water.]]>117129140Omer, E.,198626161169Saeed, M.A.,19961996Sen, P.R., N.G.S. Rao and A.N. Mohanty,198027201208Steel, R.G.D. and J.H. Torrie,19862nd Edn.,Seenappa, D. and K.V. Devaraj,19911991pp: 49-57pp: 49-57Hepher, B.,19753183198Hasan, M.R. and D.J. Macintosh,1991Cyprinus carpio) fry.]]>1991